Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
SERIES 71
.5-.75" Diameter, 1/4 Amp
Features
• Performance and Value Leader
• Molded-In Position Terminals
• Choice of Shaft/Bushing Diameters
• 30° and 36° Angles of Throw
• Military Qualified MIL-DTL-3786/39
in inches (and millimeters)
Rear Views–Style A, B, MA, MB
(and sealed versions)
0.125" Diameter Shaft–Styles A and MA (and sealed versions)
SEE DETAIL
.500 ± .015
(12,7 ± 0,38)
DIA.
SEE
CHART
1 12 1
1
2
SEE NOTE
0.250" Diameter Shaft–Styles B and MB (and sealed versions)
.375 ± .020
(9,53 ± 0,51)
.750 ± .020
(19,05 ± 0,51)
OVER TERMINALS
36° Angle of Throw
.312 ± .020
(7,92 ± 0,51)
.687 ± .015
(17,45 ± 0,38)
DIA.
.219 ± .004
(5,56 ± 0,10)
SEE DETAIL
.500 ± .015
(12,7 ± 0,38)
DIA.
All dimensions not shown
are the same as above.
.250 ± .020
(6,35 ± 0,51)
9
10
1
2
BUSHING KEyWAy
.066 ± .002 (1,68 ± 0,05) WIDE By
.036 ± .003 (0,91 ± 0,08) DEEP
FROM A .375 (9,53) DIA.
SEE NOTE
3/8-32UNEF-2A THREAD
No. of
Decks
Dimension
A
Dimension
B
Approx.
Weight
Grams
1
2
3
4
5
6
.761 (19,33)
.979 (24,87)
1.197 (30,40)
1.415 (35,94)
1.633 (41,48)
2.131 (54,13)
.031 (0,79)
.031 (0,79)
.031 (0,79)
.031 (0,79)
.031 (0,79)
.312 (7,92)
14
16
18
20
22
24
No. of Dimension
Decks
A
7
8
9
10
11
12
2.349 (59,66)
2.567 (65,20)
2.785 (70,74)
3.003 (76,28)
3.221 (81,81)
3.439 (87,35)
Dimension
B
Approx.
Weight
Grams
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
26
28
30
32
34
36
Angle C is 15° in 12 position switches and 36 ° in 10 position switches.
4
CL OF POSITION NO. 1
CL OF BUSHING KEyWAy
7
5
C
GRAyHILL
8
6
SEE
CHART
.250 + .001
–.002 DIA.
(6,36 + 0,25
–0,05)
6
1/4 32UNEF-2A THREAD
CL OF POSITION NO. 1
CL OF BUSHING FLATS
9
7
Rotary Switches
.125 + .001
–.002 DIA.
(3,18 + 0,25
–0,05)
.203 ± .005
(5,16 ± 0,13)
10
8
C
.562
± .015
(14,27
± 0,38)
GRAyHILL
.250 ± .020
(6,35 ± 0,51)
30° Angle of Throw
DIM. B REF.
STUD PROJECTION
(SEE CHARACTERISTICS)
3
.375 ± .020
(9,53 ± 0,51)
.094 ± .010
(2,39 ± 0,25)
30° and 36° Angle of Throw may be
interposed on either shaft diameter.
DIM. A ± .046 (1,17)
3
.312 ± .020
(7,92 ± 0,51)
4
.687 ± .015
(17,45 ± 0,38)
DIA.
5
DIMENSIONS: Standard and Military
.750 ± .020
(19,05 ± 0,51)
OVER TERMINALS
Note: Common location for a single pole per
deck switch. For common location on
multipole switches see circuit diagrams.
Terminal Detail
.034 ± .003
(0,86 ± 0,08)
.068 ± .005
(1,73 ± 0,13)
Grayhill part number and date code marked on detent cover label. Customer part
number marked on request. Military part number marked when required.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
All dimensions are in millimeters
4mm Diameter Shaft–Style E and ES
Rear Views
30° Angle of Throw
DIM. A ± 1,2
SEE DETAIL
DIM. B REF.
STUD PROJECTION
(SEE CHARACTERISTICS)
2
6
C
9
7
14,27
± 0,4
10
8
SEE
CHART
1 12 1
1
Ø 12,70
± 0,4
GRAyHILL
8,00
± 0,3
3
Ø 17,45
± 0,4
4
25,00 ± 0,5
5
DIMENSIONS: Metric
Ø 4,00 ± 0,03
6,00 + 0,00
–0,08
SEE NOTE
19,05 ± 0,5
OVER TERMINALS
M7,0 X 0,75 THREAD
CL OF POSITION NO. 1
CL OF BUSHING FLATS
36° Angle of Throw
Dim.
A
Dim.
B
Approx.
Weight
Grams
19,33
24,87
30,40
35,94
41,48
54,13
59,66
65,20
70,74
76,28
81,81
87,35
0,79
0,79
0,79
0,79
0,79
7,92
7,92
7,92
7,92
7,92
7,92
7,92
12
14
16
18
20
22
24
26
28
30
32
34
SEE DETAIL
Ø 12,70
± 0,4
Terminal Detail
7
9
10
1
GRAyHILL
2
SEE NOTE
4
.068 ± .005
(1,73 ± 0,13)
5
.034 ± .003
(0,86 ± 0,08)
3
8
6
No. of
Decks
1
2
3
4
5
6
7
8
9
10
11
12
19,05 ± 0,5
OVER TERMINALS
Grayhill part number and date code marked on detent cover label. Customer part number marked on request.
CIRCUIT DIAGRAMS: Standard, Military and Metric
Switch is Viewed From Shaft End and Shown in Position No. 1.
Note: All common terminals are located above base terminals as shown.
8
30° Angle
of Throw
9
10
11
C
L OF
BUSHING
KEyWAy
10
C1
1
6
5
4
3
6
5
2
4
3
8
11
C2 7
12
7
9
8
12
7
C
L
1 C1
6
2
C3
9
10
12
C
L
1 C1
5
C2
4
C3
C4
10 11
7
C
L
1 C1
4
3
2
C2
ONE POLE
TWO POLE
7
8
6
36° Angle
of Throw
5
THREE POLE
C
L OF
BUSHING
KEyWAy
9
10
1
4
3
2
ONE POLE
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
C1
C2
7
6
8
12
6
5
2
3
9
8
11
FOUR POLE
C4
C5
9 10
7
6
C3
5
4
3
C2
9
10 C
L
4
1
3
2
1
2
FIVE OR SIX POLE
8
5
C6
11
12
C1
TWO POLE
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
C
L
C1
Rotary Switches
Note: Common location for a single pole per
deck switch. For common location on
multipole switches see circuit diagrams.
Angle C is 15° in 12 position switches and
36° in 10 position switches.
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
SERIES 71
.5-.75" Diameter, 1/4 Amp, PC Mount
Features
• Terminals From One Side
• Minimum Board Footprint
• Choice of Shaft/Bushing Diameters
• 30° and 36° Angles of Throw
• Military Qualified MIL-DTL-3786/39
in inches (and millimeters)
Rear Views: Styles AF, BF, MAF, MBF
(and sealed versions)
0.125" Diameter Shaft: Styles AF and MAF (and sealed versions)
.500 ± .015
(12,7 ± 0,38)
DIA.
DIM. B REF.
STUD PROJECTION
(SEE CHARACTERISTICS)
.375 ± .020
(9,53 ± 0,51)
.250 ± .020
(6,35 ± 0,51)
.094 ± .010
(2,39 ± 0,25)
4
.156 ± .010
(3,96 ± 0,25)
TyP.
1 12
10 9
.562
± .015
(14,27
± 0,38)
CL
3
2
11
C
OF
L
BUSHING
FLATS
30° Angle of Throw
DIM. A ± .046 (1,17)
GRAyHILL
C
.312 ± .020
(7,92 ± 0,51)
5
SEE
CHART
SHAFT
SHOWN
IN POSITION
ONE
6
.687 ± .015
(17,45 ± 0,38)
DIA.
30° and 36° Angle of Throw may be
interposed on either shaft diameter.
7
.875 (30°)
.725 (36°) ± .015
(22,23, 18,42
± 0,38)
Military Qualified style MAF
includes a spacer deck between decks
2 and 3. See dimension chart.
.368 (9,35)
REF.
8
DIMENSIONS: Standard and Military
.125 – .002 + .001
(3,18 – 0,05 + 0,03)
DIA.
1/4-32 UNEF-2A
THREAD
Rotary Switches
.015
± .002
(0,38
± 0,05)
TERMINAL
NO. 1
.203 ± .005
(5,16 ± 0,13)
.020 ± .003
(0,51 ± 0,08)
TyP.
.412 ± .010
(10,46 ± 0,25)
TyP.
SEE NOTE
BELOW
.125 ± .010
(3,18 ± 0,25)
TyP.
.037 ± .005
(0,94 ± 0,13)
TyP.
SEE
NOTE
CL
CL
.110 ± .010
(2,79 ± 0,25)
TyP.
.075 ± .005
(1,91 ± 0,13)
TyP.
CL
CL CL
0.250" Diameter Shaft: Styles BF and MBF (and sealed versions)
1
.156 ± .010
(3,96 ± 0,25)
TyP.
.250 – .002 + .001
(6,35 – 0,05 + 0,03)
DIA.
3/8 32UNEF-2A
THREAD
Dimension A
Standard
Style
Dimension A
Military
Style
Dimension B
All
Styles
.761 (19,33)
.979 (24,87)
1.197 (30,40)
1.415 (35,94)
1.633 (41,48)
2.131 (54,13)
.761 (19,33)
.979 (24,87)
1.415 (35,94)
1.633 (41,49)
N.A.
N.A.
.031 (0,79)
.031 (0,79)
.031 (0,79)
.031 (0,79)
.031 (0,79)
.312 (7,92)
10
7
8
9
10
11
12
Angle C is 15° in 12 position switches and 18° in 10 position switches.
*Military style switch is 18 grams for 3 decks and 20 grams for 4 decks.
Dimension A Dimension B
Standard
Standard
Style
Style
2.349 (59,66)
2.567 (65,20)
2.785 (70,74)
3.003 (76,28)
3.221 (81,81)
3.439 (87,35)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
Approx.
Weight
Grams
24
26
28
30
32
34
.075 ± .005
(1,91 ± 0,13)
TyP.
.368 (9,35)
REF.
.125 ± .010
(3,18 ± 0,25)
TyP.
SEE
NOTE
Approx.
Weight No. of
Grams Decks
12
14
16*
18*
20
22
3
2
7
No. of
Decks
1
2
3
4
5
6
.250 ± .020
(6,35 ± 0,51)
8
.219 ± .004
(5,56 ± 0,10)
BUSHING KEyWAy .066 ± .002
(1,68 ± 0,05) WIDE By .036 ± .003
(0,91 ± 0,08) DEEP FROM A
.375 (9,53) DIA.
9
C
OF
L
BUSHING
KEyWAy
.500 ± .015
(12,7 ± 0,38)
DIA.
4
C
All dimensions not shown
are the same as above.
.312 ± .020
SHAFT
(7,92 ± 0,51)
SHOWN
IN POSITION
.375 ± .020
ONE
(9,53 ± 0,51)
GRAyHILL
SEE
CHART
36° Angle of Throw
5
.687 ± .015
(17,45 ± 0,38)
DIA.
Military Qualified style MBF
includes a spacer deck between decks
2 and 3. See dimension chart.
6
.875 (30°)
.725 (36°) ± .015
(22,23, 18,42
± 0,38)
.037 ± .005
(0,94 ± 0,13)
TyP.
CC
L L
Note: Common location for a single pole per
deck switch. For common location on
two pole switches see circuit diagrams.
Grayhill part number and date code marked on detent cover label. Customer part
number marked on request. Military part
marked
required.
Seenumber
pages
F-39when
through
F-44 for specifications,
accessories and ordering information.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
DIMENSIONS: Metric
All dimensions are in millimeters
4mm Diameter Shaft: Style EF and ESF
Rear Views
30° and 36° Angle of Throw may be
interposed on either shaft diameter.
30° Angle of Throw
3
4
5
3,96 ± 0,25
TyP.
GRAyHILL
C
OF
L
BUSHING
FLATS
1 12
2
7
8,00 – 0,3
10 9
DIM. B REF.
STUD PROJECTION
(SEE CHARACTERISTICS)
11
17,45
– 0,4
Ø 12,7
± 0,38
DIM. A – 1,17
9,35
REF.
8
25,00 – 0,51
22,23 – 0,4
6
14,27
– 0,38
4,00 – 0,03
SEE
NOTE
M7 X 0,75
THREAD
.0,38
– 0,03
TyP.
CL CL
SEE NOTE
BELOW
CL
2,79 – 0,25
TyP.
C
L
10,46 – 0,25
36° Angle of Throw
CL
59,66
65,20
70,74
76,28
81,81
87,35
7,92
7,92
7,92
7,92
7,92
7,92
3
7
8
9
10
11
12
24
26
28
30
32
34
4
12
14
16
18
20
22
3,96 ± 0,25
TyP.
SEE
NOTE
Note: Common location for a single pole per
deck switch. For common location on
two pole switches see circuit diagrams.
CL
Grayhill part number and date code marked on detent cover label. Customer part number marked on request.
10
1
2
5
0,79
0,79
0,79
0,79
0,79
7,92
18,42
± 0,04
Approx.
Weight
Grams
9,35
REF.
3,18 ± 0,25
TyP.
0,94 ± 0,13
TyP.
1,91 ± 0,13
TyP.
CL CL
7,62 ± 0,25
CL
CIRCUIT DIAGRAMS: Standard, Military and Metric PC Mount
Circuit is Viewed From Shaft End and Shown in Position No. 1
CL OF BUSHING
KEyWAy OR
FLATS
ONE POLE
30° Angle
of Throw
36° Angle
of Throw
12 11 10 9 8 7 6 5 4 3 2 1
C1
CL OF BUSHING
KEyWAy OR
FLATS
ONE POLE
10 9 8 7 6 5 4 3 2 1
C1
TWO POLE
TWO POLE
CL
12 11 10 9 8 7 6 5 4 3 2 1
C2
C1
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
CL
10 9 8 7 6 5 4 3 2 1
C2
C1
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
19,33
24,87
30,40
35,94
41,48
54,13
Approx.
Weight
No. of
Dim.
Dim.
Grams
Decks
A
B
7
Dim.
B
8
Dim.
A
9
No. of
Decks
1
2
3
4
5
6
Ø 12,7
± 0,38
GRAyHILL
0,51 – 0,08 TyP.
7,62 ± 0,25
CL
CL
6
TERMINAL
NO. 1
6,00 + 0,00 0,08
3,18 ± 0,25
TyP.
0,94 ± 0,13
TyP.
1,91 ± 0,13
TyP.
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
SERIES 71: PC Board Pattern in inches (and millimeters)
All Styles Except 71BT
30° Angle of Throw
36° Angle of Throw
COMMON TERMINAL HOLE
LOCATION (SEE CHART)
COMMON TERMINAL HOLE
LOCATION (SEE CHART)
B
.300
(7,62)
TyP.
.037 (0,94)
.075
(1,91)
TyP.
A
B
.300
(7,62)
TyP.
.037 (0,94)
.075
(1,91)
TyP.
A
.110 (2,79 )TyP.
.110 TyP.
(2,79 )
SHAFT END
OF SWITCH
.110 (2,79 )TyP.
CL OF COMMON
FOR DECK ONE
Spacer decks can be supplied to facilitate PC board layouts of
three or more decks. A spacer deck does not have any terminals
and provides no switching function. Dimensionally, it requires
the same space as one normal switch deck. Spacer deck can
be placed at any location in the switch, per your instructions.
Switches which include spacer decks are procured under a
special part number.
.110 TyP.
(2,79 )
SHAFT END
OF SWITCH
Shown for a two deck switch.
Bushing mount is recommended.
Number of Poles
Per Deck
Common Terminal
Hole Location
1
2
A
A and B
series 71: PC Mount Accessory
Rotary Switches
1
Metric Mount Styles
in inches (and millimeters)
/8" and 1/4" Diameter Shaft Styles
in millimeters
DIMENSIONS APPLy TO BOTH WASHERS.
WASHER IS
.032 (0,81) THICK
.255 ±.002
(6,48 ± 0,05) DIA.
.375 ± .002
(9,53 ± 0,05)
C
L
0.368 ± .003
(9,35 ± 0,08)
.687
(17,45)
DIA.
Ø 17.45
±0.08
C
L
9.35
±0.08
THICKNESS
0.81 ±0.05
0.030 ±.001
(0,76 ± 0,03)
.207 ±.005
(5,26 ± 0,13)
FOR USE WITH
STyLE AF
PARt 71C2054
.130 ±.003
(3,30 ± 0,08)
.500
±.002
(12,7
± 0,05)
FOR USE WITH
STyLE BF
PARt 71C2053
0.76 ±0.03
12.7
±0.05
FOR USE WITH
STyLE EF
PARt 71C2111
For printed circuit styles. Mounting bushing provides additional
support for the front end of the switch. Order separately by
appropriate part number. Rotary switch discount applies.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
SERIES 71
.5-.75" Diameter, 1/4 Amp,
Process Sealed
Features
• No Hand Soldering Required
• Sealed to Resist Intrusion by Flux,
Solder and Cleaning Solutions
• .75" Diameter
• 250 mA for 20,000 Cycles
• 36°, 1 or 2 Poles, Up to 5 Decks
• 10 Positions, Continuous Rotation,
or 2-9 Positions With Fixed Stops
DIMENSIONS: Standard and Military
Style BT
in inches (and millimeters)
.725 ± .015
(18,42 ± 0,38)
Ø .687 ± .015
(17,45 ± 0,38)
.310 ± .010
(7,87 ± 0,25)
18°
Rear View
.275 ± .020
(6,99 ± 0,51)
DIM. A
± .046(1,17)
.375 ± .020
(9,53 ± 0,51)
DIM. B
REF.
.250 ± .020
(6,35 ± 0,51)
.562 ± .015
(14,27 ± 0,38)
.250 + .001
–.002 DIA.
(6,36 + 0,25
–0,05)
.219 ± .004
(5,56 ± 0,10)
.100 ± .010
(2,5 ± 0,25)
2 PLS.
.428 ± .008
(10,87 ± 0,20)
3/8-32
UNEF-2A
THREAD
.020 ± .003
(0,51 ± 0,08)
TyP.
COMMON TERMINAL
.110 ± .010
(2,79 ± 0,25)
TyP.
TERMINAL NO. 1
.015 ± .002
(0,38 ± 0,05)
.015 ± .002
(0,38 ± 0,05)
TyP.
CL CL
CL
CL
Shaft flat is opposite point of contact for pole
number one. Shaft is shown here in position 1.
Grayhill part number and date code marked on detent cover label. Customer part number marked on request.
No. of
Decks
1
2
3
4
5
.368 ± .005
(9,35 ± 0,13)
.125 ± .010
(3,18 ± 0,25)
.156 ± .010
(3,96 ± 0,25)
CL
.449 ± .008
(11,4 ± 0,20)
.037 ± .005
(0,94 ± 0,13)
.075 ± .005
(1,91 ± 0,13) TyP.
Dimension
A
Dimension
B
0.795 (20,19)
1.040 (26,42)
1.285 (32,64)
1.530 (38,86)
1.775 (45,09)
0.031 (0,79)
0.053 (1,35)
0.076 (1,93)
0.098 (2,49)
0.120 (3,05)
Style 71BT: PC Board Pattern
CIRCUIT DIAGRAMS
Including Integral Front Plate
Standoffs
Circuit is Viewed From Shaft End
and Shown in Position No. 1
36° Angle of Throw
10 9 8 7 6 5 4 3 2 1
C1
TWO POLE
CL
.029 (0,74) Ø MIN.
HOLE 33 PLS.
.440 (11,18)
.220 (5,59)
.036 (0,91)
Ø MIN. HOLE
2 PLS.
SHAFT END OF SWITCH
CL OF BUSHING
KEyWAy OR
FLATS
ONE POLE
10 9 8 7 6 5 4 3 2 1
C2
10
C1
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
.250
(6,35)
.500
(12,7)
.075 (1,91)
9 PLS.
.0375
(0,95)
C
L OF
SWITCH
POLE
NO. 1
.300 (7,62)
.110 (2,79) 5 PLS.
.428
(10,87)
C
OF
L
STANDOFFS
CL OF COMMON
TERMINAL
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
.030 ± .002
(0,76 ± 0,05)
TyP.
1
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
SERIES 71
0.5 to 0.75" Diameter, 1/4 Amp,
Concentric Shaft
Features
• Two Switches in the Panel Space
of a Single Shaft Rotary
in inches (and millimeters)
Solder Lug Terminals: Style C
.312 ± .020
(7,92 ± 0,51)
30° and 36° Angle of Throw may be
interposed on either shaft diameter.
DIM. B REF.
STUD PROJECTION
.375 ± .020
(9,53 ± 0,05)
30° Angle of Throw
.500 ± .015
(12,7 ± 0,38)
DIA.
CL OF POSITION NO. 1
CL OF BUSHING KEyWAy
10
24
26
28
26
28
30
28
30
32
1
.032 (0,81)
.032 (0,81)
.312 (7,92)
.032 (0,81)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
7
8
.034 ± .003
(0,86 ± 0,08)
SEE NOTE
.068 ± .005
(1,73 ± 0,13)
4
1.415 (35,94)
1.633 (41,49)
2.131 (54,13)
1.633 (41,49)
2.131 (54,13)
2.349 (59,66)
2.131 (54,13)
2.349 (59,66)
2.567 (65,20)
SEE
DETAIL
Terminal Detail
5
Dimension B
.500 ± .015
(12,7 ± 0,38)
DIA.
6
Rotary Switches
Dimension A
Approx.
Weight
Grams
36° Angle of Throw
2
No. of Decks
1 12 1
1
2
BUSHING KEyWAy
.066 ± .002 (1,68 ± 0,05) WIDE By
.036 ± .003 (0,91 ± 0,08) DEEP
FROM A .375 (9,53) DIA.
CONTROLLED CONTROLLED
By .250 (6,35) By .125 (3,18)
DIA. SHAFT
DIA. SHAFT
.750 ± .020
(19,05 ± 0,51)
OVER TERMINALS
9
3/8-32UNEF-2A
THREAD
SEE NOTE
GRAyHILL
.219 ± .004
(5,56 ± 0,10)
SECTION SECTION
B
A
6
.094 ± .010
(2,39 ± 0,25)
9
7
.250 + .001
–.002
(6,35 + 0,03
–0,05)
DIA.
.125 + .001
–.002 DIA.
(3,18 + 0,25
–0,05)
10
8
C
Sec. A Sec. B
1
1
2
1
3
1
1
2
2
2
3
2
1
3
2
3
3
3
SEE
DETAIL
.562
± .015
(14,27
± 0,38)
3
SEE
CHART
GRAyHILL
.250 ± .020
(6,35 ± 0,05)
3
C
L
Rear Views
DIM. A ± .046 (1,17)
4
.687 ± .015
(17,45 ± 0,38)
DIA.
5
DIMENSIONS
.750 ± .020
(19,05 ± 0,51)
OVER TERMINALS
Note: Common location for a single pole per
deck switch. For common location on
multipole switches see circuit diagrams.
Angle C is 15° in 12 position switches and 36 ° in 10 position switches.
Grayhill part number and date code marked on detent cover label. Customer part number marked on request.
CIRCUIT DIAGRAMS: Solder Lug Terminals
Switch is Viewed From Shaft End and Shown in Position No. 1.
Note: All common terminals are located above base terminals as shown.
8
30° Angle
of Throw
9
C
L OF
BUSHING
10
11 KEyWAy
9
10
C1
1
6
5
4
3
6
5
2
ONE POLE
7
C
L
1 C1
6
7
8
5
1
4
3
C3
C
L
1 C1
5
3
4
C1
C2
7
6
9
8
11
12
7
8
12
C
L
1 C1
6
5
2
C4
10 11
4
3
2
C2
FOUR POLE
C4
C5
9 10
7
6
C3
C6
11
12
1
2
5
C
L
C1
3
C2
FIVE OR SIX POLE
4
8
9
10 C
L
5
4
1
3
2
ONE POLE
10
THREE POLE
C
L OF
BUSHING
KEyWAy
9
10
C3
9
C2
TWO POLE
6
36° Angle
of Throw
12
2
3
4
8
11
C2 7
12
7
8
2
C1
TWO POLE
ADD-A-POT SWiTCHES
Contact Grayhill for Series 71 Concentric Add-A-Pot or Add-A-Switch type switches.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
DIMENSIONS
in inches (and millimeters)
Rear Views
PC Mount: Style CF
30° and 36° Angle of Throw may be
interposed on either shaft diameter.
DIM. B REF.
STUD PROJECTION
.500 ± .015
(12,7 ± 0,38)
DIA.
3
SEE NOTE
BELOW
4
5
.075 ± .005
(1,91 ± 0,13)
TyP.
CL
.110 ± .010
(2,79 ± 0,25)
TyP.
CL
36° Angle of Throw
.656
(16,66)
.412 ± .010
(10,46 ± 0,25)
TyP.
CL
COMMON
DECK 1
SECTION A
CL CL
.500 ± .015
(12,7 ± 0,38)
DIA.
CL
COMMON
DECK 1
SECTION B
24
26
28
26
28
30
28
30
32
3
4
5
.032 (0,81)
.032 (0,81)
.312 (7,92)
.032 (0,81)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.312 (7,92)
.368 (9,35)
REF.
.125 ± .010
(3,18 ± 0,25)
TyP.
SEE
NOTE
.075 ± .005
(1,91 ± 0,13)
TyP.
.037 ± .005
(0,94 ± 0,13)
TyP.
CL CL
Note: Common location for a Single Pole Per
Deck Switch. For common location on
multipole switches see circuit diagrams.
Grayhill part number and date code marked on detent cover label. Customer part number marked on request.
CIRCUIT DIAGRAMS: PC Mount Terminals
Switch is Viewed From Shaft End and Shown in Position No. 1.
Note: All common terminals are located above base terminals as shown.
36° Angle of Throw
30° Angle of Throw
CL OF BUSHING
KEyWAy OR
FLATS
12 11 10 9 8 7 6 5 4 3 2 1
C1
CL
12 11 10 9 8 7 6 5 4 3 2 1
C1
C2
ONE POLE
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
TWO POLE
CL OF BUSHING
KEyWAy OR
FLATS
10 9 8 7 6 5 4 3 2 1
C1
ONE POLE
CL
10 9 8 7 6 5 4 3 2 1
C1
C2
TWO POLE
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Dimension B
1.415 (35,94)
1.633 (41,49)
2.131 (54,13)
1.633 (41,49)
2.131 (54,13)
2.349 (59,66)
2.131 (54,13)
2.349 (59,66)
2.567 (65,20)
7
Dimension A
.156 ± .010
(3,96 ± 0,25)
TyP.
8
Sec. A Sec. B
1
1
2
1
3
1
1
2
2
2
3
2
1
3
2
3
3
3
Approx.
Weight
Grams
9
No. of Decks
10
GRAyHILL
1
2
6
.015
± .002
(0,38
± 0,05)
.368 (9,35)
REF.
.125 ± .010
(3,18 ± 0,25)
TyP.
.037 ± .005
(0,94 ± 0,13)
TyP.
SEE
NOTE
3/8-32 UNEF-2A
THREAD
For additional dimensions and references for
shafts, flat orientation and bushing keyway,
see drawings for styles 71AF and 71BF.
6
.250 + .001
–.002
(6,35 + 0,03
–0,05)
DIA.
SEE SOLDER LUG
VERSION FOR
SHAFT FLATS AND
DIMENSIONS
.156 ± .010
(3,96 ± 0,25)
TyP.
.562
± .015
(14,27
± 0,38)
1 12
10 9
POSITION
NO. 1
2
11
.125 + .001
–.002 DIA.
(3,18 + 0,25
–0,05)
SECTION
B
SECTION
A
.250 ± .020
(6,35 ± 0,05)
GRAyHILL
.375 ± .020
(9,53 ± 0,05)
7
.687 ± .015
(17,45 ± 0,38)
DIA.
.020 ± .003
(0,51 ± 0,08)
TyP.
30° Angle of Throw
DIM. A
.312 ± .020
(7,92 ± 0,51)
8
.875 (30°)
.725 (36°) ± .015
(22,23, 18,42
± 0,38)
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
SPECIFICATIONS
Military Qualification MIL-DTL3786/39
The military style of the Series 71 rotary switch
is qualified to MIL-DTL-3786/39. Complete
electrical rating information is listed on the
following page. The Series 71 rotary switch
qualification includes the 30° and the 36°
angles of throw, in .125" (3,18) and .250" (6,35)
diameter shafts, with solder lug terminals and
printed circuit terminals, in sealed and unsealed
style switches. Standard variations such as
shaft and/or bushing length, etc. that do not
affect the switch performance can also be
marked as qualified product. Contact Grayhill
for complete details.
Dimensionally the military style is the same
as the standard style with the exception of
the PC version of 3 or 4 decks; a spacer deck
will be marked to the specification.
between decks 2 and 3 adds another deck length
to the switch without increasing the number of
operative decks.
Another difference in the standard and military
styles is the mounting hardware. Ordered as
options with a standard style switch these items
are included with the military style switch: nonturn washer with solder lug style and a non-turn
washer plus a mounting bushing washer with the
PC terminal style.
Complete specification drawings are available
from Grayhill, Inc. for the standard military
qualified products. Military qualified Series 71
rotary switches may be ordered by the “M”
number listed in Military Specification Sheet/39
or by Grayhill part number. All qualified switches
Military Shaft and Panel Seal
A shaft and panel seal is available to provide
watertight mounting of the Series 71 standard
military style rotary switches. Sealing is
accomplished by an O-ring shaft seal and
a panel seal washer. Panel seal dimension
differences are shown in the dimensional
drawings. When the panel seal is compressed,
dimensions are approximately the same as
an unsealed switch. If the non-turn washer
supplied with the switch is used, it should not
be allowed to extend entirely through the panel
when mounting a sealed switch. However, the
bushing may be used as a non-turn device
instead. Switches are provided with a double
flat bushing in styles which include the letter
A and with a bushing which has a keyway in
the styles which include the letter B.
SPECIFICATIONS: Materials and Finishes
Materials and Finishes
Standard Style
Rotary Switches
Cover: Diallyl per (MIL-M-14) ASTM-D-5948
except for 71 BT (see bushing).
Base and Deck Separator: Diallyl per (MILM-14) ASTM-D-5948
Rotor Mounting Plate: Thermoplastic
Bushing: Zinc casting, tin/zinc-plated.
Through Bolts and Nuts, Shaft and Rear
Support Plate, Stop Pins and Stop Arm
(All Others): Stainless steel
Shaft, Stop Plates, Stop Arm (71BT):
Reinforced thermoplastic
Detent Rotor: Reinforced thermoplastic for
71BT; phenolic per (MIL-M-14) ASTM-D5948 for all others
Detent Balls: Steel, nickel-plated
Detent Springs: Tinned music wire
Rotor Contact: Silver alloy and beryllium
copper
Base Contacts, Common Plate and
Terminals: Brass, Gold plate .000005"
minimum over Silver plate .00005" over
nickel .00002".
Front Support Plate (71 BT only):
Tempered steel, tin/lead-plated.
Interdeck Seal (71 BT Only): Silicone
Extension: Brass, unplated
Mounting Hardware: One mounting nut and
one internal tooth lockwasher are supplied with
each switch. For switches with A in the style
description, the nut is .062" (1,57) thick by .312"
(7,92) across flats. For switches with B or C in
the style description, the nut is .094" (2,39) thick
by .562" (14,27) across flats. Nuts are brass, tin/
zinc-plated or stainless steel.
Materials and Finishes
Military Qualified
Cover, Base and Deck Separator: Diallyl per
(MIL-M-14) ASTM-D-5948
Rotor Mounting Plate: Thermoplastic
Bushing: Zinc casting, tin/zinc-plated
Through Bolts and Nuts, Shaft Extension,
Lockwashers, Shaft and Rear Support
Plate, Stop Pins and Stop Arm (All Others):
Stainless steel
Detent Balls: Steel, nickel-plated
Detent Springs: Tinned music wire
Rotor Contact: Silver alloy and beryllium
copper
Base Contacts, Common Plate and Terminals:
Brass, gold plate .000005" minimum over silver
plate .00005" over Nickel .00002".
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
Detent Rotor: Phenolic per (MIL-M-14)
ASTM-D-5948
Mounting Hardware: One mounting nut and
one internal tooth lockwasher are supplied
with each Series 71 switch. For switches with
Style A in the description, the nut is .062"
(1,57) thick by .312" (7,92) across flats. For
switches with Style B or C in the description,
the nut is .094" (2,39) thick by .562" (14,27)
across flats. Nuts are brass, tin/zinc-plated or
stainless steel.
Additional Hardware: Each switch is supplied
with a non-turn washer to use if desired.
Additionally, each PC mount switch is supplied
with a mounting bushing washer (see PC Mount
Accessory). For switches with Style A in the
description, non-turn washer is stainless steel;
for switches with Style B in the description,
non-turn washer is stainless steel. Mounting
bushing washer (PC Mount Accessory) is
brass, tin/zinc-plated.
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
SPECIFICATIONS: Electrical Ratings, Others
Electrical Ratings
General
CURRENT
CURRENT
CURRENT
CURRENT
MILLIAMPS
MILLIAMPS
MILLIAMPS
MILLIAMPS
CURRENT
CURRENT
MILLIAMPS
MILLIAMPS
600
VOLTAGE 115 VAC
10 OR 30 VDC
25
50
500 StANDARD
Standard
400
CyCLES x 1000
RESISTIVE
300
600
VOLTAGE 115 VAC
200
VOLTAGE 30 VDC
500
OR 30 VDC
100
INDUCTIVE
400
RESISTIVE
250
(250 MILLIHENRIES)
300
10
25
50
200
200
VOLTAGE 30 VDC
150
CyCLES x 1000
100
INDUCTIVE
100
250
(250 MILLIHENRIES)
50
10
25
50
200
150
10CyCLES x 1000
25
50
100
CyCLES x 1000
50
VOLTAGE 30 VDC
INDUCTIVE 50
10
25
250
(250 MILLIHENRIES)
CyCLES x 1000
200
VOLTAGE 30 VDC
150
INDUCTIVE
100
250
(250 MILLIHENRIES)
50
200 MILItARy
150
10
25
50
100
CyCLES x 1000
VOLTAGE 115 VAC
50
800 MILItARy
OR 30 VDC
700
RESISTIVE
10Military
25
50
600
500
CyCLES x 1000
VOLTAGE 115 VAC
400
800
300
OR 30 VDC
700
200
RESISTIVE
600
100
500
MILItARy
400
10
25
50
300
CyCLES x 1000
200
100
VOLTAGE 115 VAC
800 MILItARy
10 OR 30 VDC
25
50
700
RESISTIVE
600
CyCLES x 1000
500
VOLTAGE 115 VAC
400
800
300
OR 30 VDC
VOLTAGE 30 VDC
700
200
RESISTIVE
INDUCTIVE
600
100
250
500
(250 MILLIHENRIES)
400
200
10
25
50
300
VOLTAGE 30 VDC
150
CyCLES x 1000
200
INDUCTIVE
100
100
250
(250 MILLIHENRIES)
50
200
10
25
50
150
10 CyCLES x 1000
25
50
100
CyCLES x 1000
50
VOLTAGE 30 VDC
INDUCTIVE
10 (250 MILLIHENRIES)
25
50
250
CyCLES x 1000
200
VOLTAGE 30 VDC
150
INDUCTIVE
100
250
(250 MILLIHENRIES)
50
200
150
10
25
50
100
CyCLES x 1000
50
10
25
CyCLES x 1000
Curves are based on the following failure
criteria:
Contact Resistance: 50 milliohms maximum
(20 milliohms initially).
Insulation Resistance: 1,000 megohms
minimum between terminals and shaft. (50,000
megohms initially).
Voltage Breakdown: 500 Vac minimum between
mutually insulated parts.
Current Rating: These switches will carry 4
amperes with a maximum contact temperature
rise of 20°C. If the life limiting characteristics
are less critical than those shown above, if
elevated temperatures or reduced pressures
are involved, Grayhill can predict the switch life
for the application.
Meet the Following Requirements of MILDTL-3786: Moisture Resistance: Medium and
High Shock; Vibration (10 to 2,000 cps); Thermal
Shock (-65°C to 85°C); Salt Spray, Explosion;
and Stop Strength (10 in-lb).
Electrical Ratings
Military Style
Curves are based on the following failure
criteria:
Qualified to the following MIL-DTL-3786/39
circuit values: (also see standard style
description.) The Series 71 has been tested to
meet the requirements of MIL-DTL-3786, Style
SR39, the majority of which are listed here. At
85°C approximately 68% relative humidity and
sea level pressure, the switches have been
tested to make and break the following loads,
as stated in MIL-DTL-3786/39: 125 milliamperes
at 28 Vdc resistive; 75 milliamperes at 115 Vac
resistive.
The switches have also been tested at reduced
barometric pressure (70,000 feet), 25°C at
approximately 68% relative humidity to make and
break the following loads as stated in MIL-DTL3786/39: 50 milliamperes, 28 Vdc resistive; 20
milliamperes, 115 Vac resistive. When tested to
the above loads at stated conditions, the Series
71 switches meet the following life-limiting criteria
after 25,000 cycles of operation in accordance
with MIL-DTL-3786/39.
Contact Resistance: 50 milliohms maximum
after life.
Insulation Resistance: 1,000 megohms
minimum between terminals and shaft.
Dielectric Strength: 500 Vac (atmospheric
pressure) and 350 Vac (reduced pressure)
between mutually insulated parts.
The Series 71 also meets the requirements
of MIL-DTL-3786/39 for moisture resistance,
stop strength, rotational torque, vibration (10
through 2,000 cps), medium and high shock,
salt spray, explosion, thermal shock (-65°C
to 85°C) and terminal pull. When tested at
sea level, 25°C and 68% relative humidity
with failure criteria of 50 milliohms maximum
contact resistance and 500 Vac breakdown
voltage, these switches will make and break 250
milliamps at 28 Vdc inductive (250 millihenries)
500 milliamps at 28 Vdc resistive: 500 milliamps
at 115 volts Vac, 60 hertz resistive, for 10,000
cycles of operation.
Additional Characteristics
Standard and Military Styles
Rotational Torque: 4-32 ounce-inches, (28230 N•mm) depending on the number of poles
per deck and the number of decks.
Contacts: Shorting or non-shorting wiping
contacts with over 100 grams of contact
force.
Shaft Flat Orientation: Opposite first position
pole no. 1 (See Circuit Diagrams).
Terminals: Switches are provided with full
circle of terminals regardless of the number
of active positions.
Extended Studs: Switches of 6 or more
decks (or concentric switches of 4 or more)
have longer studs and extra stud nuts for
recommended double end mounting. Stud hole
size is 1/16" diameter for #0-80 NF-2A thread.
Stop Strength: 10 pound-inches.
Mounting Bushing Strength: 10 poundinches.
50
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
CURRENT
CURRENT
CURRENT CURRENT
MILLIAMPS
MILLIAMPS
MILLIAMPS MILLIAMPS
CURRENT
CURRENT
CURRENT
CURRENT
MILLIAMPS
MILLIAMPS
MILLIAMPS
MILLIAMPS
CURRENT
CURRENT
MILLIAMPS
MILLIAMPS
Charts: Charts shown are for non-shorting
(break before make) contacts. Measurements
were made at 25°C and 68% relative humidity.
The load life curves show the number of
rotational cycles which can be expected for the
voltage, current and type of load. Thus, for a
standard style switch with a 300 milliampere 115
Vac resistive StANDARD
load, the expected life is 15,000
cycles. Reducing the load to 200 milliamperes
increases the
to 25,000 cycles. Life limiting
600 life VOLTAGE 115 VAC
500StANDARD
OR 30 VDC
or failure criteria
are listed
in the rating sections
400
RESISTIVE
which follow.
300
600
200
Cycles: A 500
cycle isVOLTAGE 115 VAC
a OR 30 VDC
360° rotation and a return
100
through all400switch positions
RESISTIVE to the starting
StANDARD
10
25
50
position. 300
200
CyCLES x 1000
Voltage: As
charts.
100listed in
Electrical Ratings
Standard Style
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
ADJUSTABLE STOPS
Set and Reset Stops to Limit Rotation
Form, Fit, Function Equivalent to Fixed Stop Styles
The adjustable stop Series 71 rotary switches allow you to
change the number of positions per pole. Simply remove
and relocate stop pins in the holes in the front of the switch.
The pins are held in place by a self adhesive sticker which
fits over the front plate.
This feature is available in the Series 71 single shaft standard
switches with either 1/8" or 1/4" diameter shafts with either
PC or solder lug terminals. It is not available in military
qualified or concentric shaft styles.
STOP PIN HOLES
STOP PINS
All dimensions, ratings and characteristics are the same as
the fixed stop equivalent.The chart shown here describes the
adjustable stop style substitutions for the fixed stop styles.
Although Series 71 is not an exact dimensional equivalent
of the fixed stop styles of Series 8 and 9, it most nearly
represents a functional substitution.
Fixed Stop
Style
STICKER
Adjustable Stop
Substitution
08A
09A
71AD
71AD
71A
71AF
71AD
71ADF
71B
71BF
71E
71EF
71BD
71BDF
71ED
71EDF
Rotary Switches
SHAFT AND PANEL SEAL
SHAFT “O” RING
PANEL SEAL
The shaft is sealed by an O-ring inside the bushing. The
panel is sealed by an O-ring at the base of the bushing.
The seals do not alter the dimensions as shown in the
drawings when the switch is mounted.
The panel seal is silicone rubber. The shaft seal is an O-ring
per MIL-P-5516B.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
ACCESSORIES: Non-Turn Washers
in inches (and millimeters)
/8" and 1/4" Diameter Shaft Switches
1
The bushing of the Series 71 switch is designed so the switch will not turn
if the panel has been cut to fit the exact bushing shape. The bushing for the
1
/8" diameter shaft switch has a double flat; the 1/4" diameter shaft switch
has a keyway in the bushing. An alternate means of keeping the switches
from turning is to mount them with optional, non-turn washers.
.625 ± .010 DIA.
(15,89 ± 0,25)
Part number 50J1066 is made of Stainless Steel. It is supplied with
military switches with Style A in the description. When ordered for standard
product, a like number of switches must be ordered.
.437 + .010 –.000
(11,10 + 0,25 –0,00)
.032 ± .002
(0,81 ± 0,05)
90˚ ± 1˚
.005 ± .003
(0,38 ± 0,08)
RADIUS
CL
Part number 12C1087-1 is Brass, tin/zinc-plated and may be ordered for
standard product.
.125 ± .010
(3,16 ± 0,25)
.120 ± .003
(3,05 ± 0,08)
Part number SHH694-5 is Stainless Steel washer supplied with all military
style switches with Style B in the description.
.400
± .005
DIA.
(10,16
± 0,13)
PART No. 12C1087-1
Standard
.625 ± .010 DIA.
(15,89 ± 0,25)
.025
± .001
(0,64
± 0,03)
.032 ± .005
(0,81 ± 0,13)
90° ± 1°
90° ± 1°
.250 ± .003
(6,35 ± 0,08)
.015
(0,38)
RADIUS
MAX.
.125
± .005
(3,16
± 0,13)
.060 ± .001
(1,52 ± 0,25)
.375 ± .005
(9,53 ± 0,13)
.015 (0,38)
RADIUS
MAX.
CL
.125 ± .005
(3,16 ± 0,13)
.125 ± .002
(3,18 ± 0,05)
PART No. 50J1066
Military and Standard
for 1/8" diameter shaft
PART NO. SHH694-5
Military
for 1/4" diameter shaft
Rotary Switches
4mm Diameter Shaft Switches
11,13
± 0,13
DIA.
Non-Turn Washer
For styles E, ED, EF and EDF.
Mounting bushing washer provides non-turn
feature.
302 Stainless Steel.
Part No. 71 J1103. Contact Grayhill for price.
0,64
± 0,05
90˚ ± 1˚
CL
5,08
± 0,05
1,57 ± 0,08
.015
(0,38)
RADIUS
MAX.
2,36
± 0,13
Recommend Panel Cutout
+ .00
· 250 -.000
5 DIA ·
t
.210J
±.003
. 3 75
.060
± .002
.1545
FOR ALL 71A SERIES W/
1/4-32 THREADED BUSHING
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
�:88�---
FOR ALL 718 SERIES W/
3/8-32 THREADED BUSHING
+ .00
5 DIA ·
· 276 -.000
[ .,.,J
±.003
FOR ALL 71E SERIES W/
M7 THREADED BUSHING
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
CHOICES AND LIMITATIONS: Series 71
A = 1/8" Diameter Shaft
B = 1/4" Diameter Shaft
E = Metric Mount Shaft & Bushing
D = Adjustable Stops (Adj. Stop)
S = Shaft and Panel Seal (S/P Seal)
Basic Style
A
B
E
Style Choices
With S/P Seal
F = PC Mount Terminals
T = PC Mount Terminals and Process Sealed
Switching Decks & Bushing; no panel seal
M = Military
All switches without F or T have solder
Adj. Stop
AS
BS
ES
ASF
BSF
ESF
ADF
BDF
EDF
BT
——
——
Rotary Switches
MAF
MBF
MAS
MBS
MASF
MBSF
Angle of
Throw
No. Of
Decks
30°
01 thru 12
01 thru 08
01 thru 05
01 thru 04
01 thru 03
01 or 02
1
2
3
4
55
65
02 thru 123
02 thru 06
02 thru 04
02 or 03
02
02
N or S
N or S
N or S
N or S
N or S
N or S
36°
01 thru 12
01 thru 08
1
2
02 thru 103
02 thru 05
N or S
N or S
30°
01 thru 12
01 thru 08
1
2
02 thru 123
02 thru 06
N or S
N or S
36°
01 thru 12
01 thru 08
1
2
02 thru 103
02 thru 05
N or S
N or S
36°
01 thru 05
01 thru 05
1
2
02 thru 103
02 thru 05
N or S
N or S
30°
01 thru 054
01 thru 054
01 thru 054
01 thru 044
01 thru 024
1
2
3
4
6
02 thru 123
02 thru 06
02 thru 04
02 or 03
02
N or S
N or S
N or S
N or S
N or S
36°
01 thru 054
01 thru 054
1
2
02 thru 103
02 thru 05
N or S
N or S
30°
01 thru 042,4
01 thru 042,4
1
2
02 thru 123
02 thru 06
N or S
N or S
36°
01 thru 042,4
01 thru 042,4
1
2
02 thru 103
02 thru 05
N or S
N or S
01 thru 03
01 thru 03
01 or 02
01
01
01
1
2
3
4
5
6
02 thru 123
02 thru 06
02 thru 04
02 or 03
02
02
N or S
N or S
N or S
N or S
N or S
N or S
36°
01 thru 03
01 thru 03
1
2
02 thru 103
02 thru 05
N or S
N or S
30°
01 thru 03
01 thru 03
1
2
02 thru 123
02 thru 06
N or S
N or S
36°
01 thru 03
01 thru 03
1
2
02 thru 103
02 thru 05
N or S
N or S
AD
BD
ED
AF
BF
EF
MA
MB
——
——
——
——
30°
C
CF
——
——
For Adjustable Stop styles (with the letter D),
use AJ instead of number of positions when
ordering.
2
Military Qualified PC mount switches of 3 or
4 operative decks have an additional spacer
deck after deck 2. Use total decks to calculate
1
lugs
C = Concentric Shaft
2 Switches with same Style and Angle of
Throw, one behind the other.
Limits below apply to either switch section
(A or B).
——
——
Poles
Per Deck
length; but use only the number of operative
decks when creating the part number.
3
For 1-pole switches with maximum positions,
specify Fixed stop after last position or
Continuous rotation when ordering. (Note: 1 p,
71BT, 10 positions, is available only as
Continuous).
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
Positions
Per Pole1
Shorting Or
Non-Shorting
In addition to qualified types (Solder lug–5
decks; PC mount–4 decks), Grayhill can pro-
vide switches with additional decks in the
materials of the ‘M’ style. Contact Grayhill.
5
Switches in 30° throw with 5 or 6 poles per deck
are not available with adjustable stops.
4
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Multi-Deck Rotary Switches
ORDERING INFORMATION: Single Shaft Switches
Series
Style*: Letter(s) from the Choices and Limitations chart
Angle of Throw: 30° or 36°
Number of Decks: As limited by Choices and Limitations chart
71A30–02–1–12N–C
Stop Arrangement: Use suffix only when ordering 1 pole with
maximum positions.
C = Continuous rotation; F = Stop between last and first positions
Type of Contacts: N = Non-shorting; S = Shorting
Positions Per Pole: 02 to 12 per Choices chart.
For adjustable stop switches (D) use AJ here.
Poles Per Deck: As limited by the Choices chart
* All rotary switches that are required to have military designated markings and testing adhering to MIL-DTL3786 are to be ordered by specifying the military part number identified on the appropriate slash sheet.
ORDERING INFORMATION: Concentric Shaft Switches
Entire Switch
Series and Style: 71C or 71CF
Angle of Throw: 30° or 36°. Both switch sections will be the same.
Switch Section A (Front Switch)
Number of Decks: 1 to 3, per Choices and Limitations chart
Poles Per Deck: As limited by the Choices and Limitations chart
Positions Per Pole: 02 to 12 per Choices and Limitations chart
Type of Contacts: N = Non-shorting; S = Shorting
Stop Arrangement: Use suffix only when ordering 1 pole with
maximum positions.
C = Continuous rotation; F = Stop between last and first positions
71C362110NC–3 2 0 2 S
Switch Section B (Rear Switch)
Stop Arrangement: Use suffix only when ordering 1 pole with
maximum positions.
C = Continuous rotation; F = Stop between last and first positions
Type of Contacts: N = Non-shorting; S = Shorting
Positions Per Pole: 02 to 12 per Choices and Limitations chart.
Poles Per Deck: As limited by the Choices and Limitations chart
Number of Decks: 1 to 3, per Choices and Limitations chart
Available from your local Grayhill Distributor.
For prices and discounts, contact a Local Sales Office, an authorized local Distributor or Grayhill.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Mechanical Encoders
Series 71
Binary Code
Features
• 1/4" or 1/8" Shaft Diameters
• 25,000 Cycles at 125 mA
• Optional Seal Versions
• Adjustable Stop Versions
in inches (and millimeters)
.375 – .020
(9,53 – 0,51)
72
.250 – .020
(6,35 – 0,51)
CL OF SHAFT
FLAT
.750 – .020
(19,05 – 0,51)
OVER TERMINALS
C
3/8 32-UNEF-2A
THREAD
Detail A
72°
SHAFT IS
SHOWN
IN POSITION 1
Rear mounting
plate stamping
indicates CODED
output terminals,
not decimal positions.
Optical and Mechanical
Encoders
.687 – .015
(17,45 – 0,38)
DIA.
.219 ± .004
(5,56 ± 0,10)
SEE
DETAIL A
1/4 32-UNEF-2A
THREAD
1
.125 + .001/ .002
(3,18 + 0,03/ 0,05)
.203 – .005
(5,16 – 0,13)
8
.562 – .015
(14,27 – 0,38)
CL
OF
BUSHING
FLATS
SHAFT IS
SHOWN
IN POSITION 1
.500 – .015
(12,7 – 0,38)
DIA.
.031 (0,79)
REF.
2
C OF SHAFT
L
FLAT
(2,39 – 0,25)
0.250"
Diameter
Shaft
.761 – .046
(19,33 – 1,17)
.312 – .020
(7,92 – 0,51)
4
0.125"
Diameter
Shaft .094 – .010
GRAYHILL
81073
DIMENSIONS
CL
OF
BUSHING
KEYWAY
.250 + .001/ –.002
(6,35 + 0,03/ –0,05)
All dimensions and rear view not shown for
the .250" diameter shaft type are the same
as the .125" diameter shaft type.
.034 ± .003
(0,86 ± 0,08)
BUSHING KEYWAY
.066 ± .002 (1,68 ± 0,05) WIDE
BY .036 ± .003 (0,91 ± 0,08)
FROM A .375 (9,53) DIAMETER
.068 ± .005
(1,73 ± 0,13)
Grayhill part number and date code marked on label. Customer part number marked on request.
Code and Truth Table
Output Decimal Position
Terminal 0 1 2 3 4 5 6 7 8 9
1
l
l
l
l
l
2
l l
l l
4
l l l l
8
l l
l Indicates contact is made to the common.
OPTIONS
Shaft and Panel Seal
Shaft is sealed by o-ring inside the bushing;
panel is sealed by o-ring at the base of the
bushing. Seals do not alter dimensions as shown in
the drawing when switch is mounted. Panel seal is
silicone rubber. Shaft seal is an o-ring per MILP-5516B. Shaft and panel seal is not available on
adjustable stop switch.
Rated: To make and break 125 mA at 30 Vdc
resistive at standard conditions
Life Expectancy: 25,000 cycles at rated load;
50,000 cycles mechanical. For ratings at different
loads and conditions, contact Grayhill.
Contact Resistance: 100 milliohms maximum
(50 milliohms initially)
Insulation Resistance: As measured between
mutually insulated parts
Initially:
50,000 megohms minimum
After Life: 10,000 megohms minimum
Voltage Breakdown: 500 Vac between mutually
insulated parts
Carry Current: These switches will carry 3
amperes with a maximum contact temperature
rise of 20°C.
Adjustable stop switch lets you limit the number of
positions. Remove and relocate pins in the front
plate. A sticker holds the pins in place. With the
exception of holes in the front plate, all dimensions,
ratings, and characteristics are the same as the
other Series 71 coded switches. For diagrams,
see Standard Switch.
Ordering Information
Specifications
Electrical Rating
Adjustable Stop Switches
additional Characteristics
rotational Torque: 8 to 16 oz-in. Contacts: Nonshorting wiping contacts Shaft flat Orientation:
As shown in the drawing, switch would provide
a decimal 1 output.
Operating Temperature Range: -40 °C to +85 °C
Materials and finishes
base: Diallyl per MIL-M-14
rotor Mounting Plate: Thermoplastic. rotor
Contact: Phosphor Bronze, gold-plated 30
microinches minimum
Terminals: Brass, gold plate (20 microinches min)
over silver plate (300 microinches min) additional
Materials: Other switch materials and finishes are
the same as listed for the standard switch.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
Shaft Diameter
And Description
1/8" Continuous Rotation
1/8" Cont. Rot., Sealed
1/4" Continuous Rotation
1/4" Cont. Rot., Sealed
1/8" Adjustable Stops
1/4" Adjustable Stops
Part
Number
71AY23401
71AY23402
71BY23403
71BY23404
71AD36-3118
71BD36-3119
Available from your local Grayhill
Distributor.
For prices and discounts, contact a local
Sales Office, an authorized local Distributor or
Grayhill.
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Keylock Rotary Switches
Series 71 J and L
Multi-Deck, Standard &
Anti-Static
Switch Features
• Economical
• 36° or 30° Throws
• Up to 16 Poles Per Switch
• 250 mA for 15,000 Cycles
Lock features
• Economical
• Standard or Anti-Static Style
• 5-Plates, 1-Sided Key
in inches (and millimeters)
Key slot shown in position 1.
Key to be inserted with cut
side down.
36°
30°
3/4-24 UNS-2A
THREAD
9
10
4
1
1 12 1
1
GRAYHILL
5
2
4
GRAYHILL
5
6
.685 ± .015
(17,4 ± 0,4)
OVER TERMINALS
3
.685 ± .015
(17,4 ± 0,4)
OVER TERMINALS
DIMENSION A
7
6
7
0.900 ± .005
(22,86 ± 0,13)
8
8
DIM. B
0.687 ± .010
(17,45 ± 0,25)
9
2
10
3
Dimensions
Note: Switch/key positions are not aligned with terminal positions.
Rotary Switches
Number of decks
1
2
3
4
5
7
8
9
Dim. A, Style J (In.)
Dim. A, Style L (In.)
Dim. B Style J & L(In.)
2.441
1.811
.031
2.659
2.029
.031
2.877
2.247
.031
3.095
2.465
.031
3.313
2.683
.031
3.811
3.181
.312
4.029
3.399
.312
4.247
3.617
.312
4.465
3.835
.312
4.683
4.053
.312
4.901
4.271
.312
5.119
4.489
.312
Dim. A, Style J (mm)
Dim. A, Style L (mm)
Dim. B Style J & L(mm)
62,00
46,00
0,79
67,54
51,54
0,79
73,08
57,07
0,79
78,61
62,61
0,79
84,15
68,15
0,79
96,80
80,80
7,92
102,34
86,33
7,92
107,87
91.87
7,92
113,41
97,41
7,92
118,95
102,95
7,92
124,49
108.48
7,92
130,02
114,02
7,92
For switch specifications and additional dimensions, see Standard Switch Pages.
6
10
11
12
Grayhill part number and date code marked on label.
Customer part number marked on request.
RECOMMENDED PANEL CUT
Lock detail
LOCKWASHER
LOCKWASHER IS
1.062 ± .022
(26,97 ± 0,56) DIA. BY
.022 (0,56) THICK
MOUNTING NUT
3/4-24 UNS-2A
THREAD
LOCK
ADAPTOR
A = .218 (5,54)
B = .875 ± .020 (22,23 ± 0,51)
NUT IS APPROXIMATELY
.875 (22,23) ACROSS FLATS
.691 + .010 –.000
(17,55 + 0,25)
ANTI-STATIC
ADAPTOR
.730
(18,54)
A
1.0 (25,4)
REF.
B
1.050 (26,25)
REF.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
.750 + .015 –.000
(19,05 + 0,38)
B
1.680 (42,67)
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Keylock Rotary Switches
choices
Style
Description
Angle of
Throw
No. Of
Decks
Poles/
Deck
Positions
Per Pole
Shorting or
Non-Shrtg.
Series 71 Switches
L
J
Standard, Solder Lugs
Anti-static, Solder Lugs
30°
01 to 12
01 to 08
01 to 05
01 to 04
01 to 03
01 or 02
1
2
3
4
5
6
02 to 12*
02 to 06
02 to 03
02 to 03
02
02
N or S
N or S
N or S
N or S
N or S
N or S
36°
01 to 12
01 to 08
1
2
02 to 10*
02 to 05
N or S
N or S
*For single pole switches with maximum positions, specify continuous rotation or fixed stop when ordering.
Lock MATERIALS & FINISHES
Lock SPECIFICATIONS
Mounting: By bushing, nut and lockwasher
Static Voltages: Anti-static style withstands
15,000 Vdc
Keying: All locks have identical keys unless
specially ordered otherwise
Key Removal
30° Throw:
Position 1 and 180°
Special key removal: Every 90°
36° Throw:
All positions
Special key removal: Position 1 only
Keys: Brass; 2 supplied
Lock Bezel: Stainless steel
Lock Barrel & Plug: Zinc treated with
chromate
Lock Adaptor/Extension: Thermoplastic
Orientation of Keylock Switch: Bushing flats
are on both sides of the mounting thread with
the key upright in the first position with cut side
down.
Ordering INFORMATION
Standard Switch Pages
For additional switch dimensions, ratings, circuitry,
and specifications, see Series 71 datasheet.
Available from your local
Grayhill Distributor.
For prices and discounts,
contact a local Sales Office,
an authorized local Distributor or Grayhill.
71 L 30-03-1-12N-F
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Series
Style Letter: L for standard; J for anti-static
Angle of Throw: 30 or 36
Number of Decks: 01 thru 12 (per Choices chart)
Poles per Deck: 1 thru 6 (per Choices chart)
Positions per Pole: 02 thru 12 (per Choices chart)
Type of Contacts:
N = Non-shorting
S = Shorting
Stop Arrangement Suffix:
(needed only for 1-pole switches with maximum positions)
F = Fixed stop between last and first positions
*Leave blank for continuous rotation
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Adjustable Stop Rotary Switches
Features
• Quick Route to Rotary Switches
• For Prototypes and
Small Production Runs
Series
50/51
Series
42/44
Series
56
Series
71
BEST AVAILABILITY
The Problem
Procurement lead time on rotary switches for
prototypes and small production runs can be long.
This is often a source of headache for design
engineers and production control managers.
Grayhill makes more than 300,000 combinations
of rotary switch styles; number of decks, poles
per deck, positions per pole, military qualified
or commercial grade, etc. This wide variety
makes it impractical for either distributors or
manufacturers to stock completed switches.
Consequently, even small quantities must be
built to order.
The Solution
Grayhill Electronic Distributors can supply a wide
variety of rotary switches with Adjustable Stops.
This feature gives you a switch immediately
with exactly the electrical properties you need.
These Adjustable Stop switches have the basic
mechanical characteristics of their fixed stop
counterparts. To get the right number of positions
per pole for your application, simply adjust the
stop washers or stop pins.
By stocking a few switches, the Distributor
provides over 100,000 possible combinations of
switches. This includes the popular styles, sizes,
angles of throw, number of decks, poles per
deck, positions per pole, and types of contacts.
Availability of these switches through Distributors
speeds prototype development time. There is no
time lag in waiting for factory made samples.
The Substitution
Writing an equivalent part number is easy. To
obtain an adjustable-stop equivalent to a fixedstop rotary switch you must substitute style
letters and possibly series number. Then replace
the positions-per-pole number in the fixed-stop
number with the letters AJ. See the examples
for the scheme.
series, style and angle of throw as well as
the adjustable stop rotary switch series, style
and angle of throw. Then the letters AJ in the
positions-per-pole location, gives you the part
number of the equivalent.
Suppliers
Distributors can supply 1 and 2-deck adjustablestop switches from stock (one or two poles
per deck). They can also quickly secure other
variations from factory stock. Reduce prototype
development time. Use Grayhill Adjustable
Stop Rotary Switches for all of your prototype
requirements.
These electronic distributors also maintain a
representative stock of Grayhill products. Local
availability can often “save the day”, and simplify
your paperwork.
When adjustable equivalents apply, the rotary
switch pages will indicate the substitutions.
A chart will show the fixed stop rotary switch
Fixed Stop Rotary Switch
Adjustable Stop Equivalent
Series
Style
Angle of Throw
No. of Decks
Poles/Deck
Positions/Pole
Type of Contacts
N = Non-Shorting
S = Shorting
42A36-01-1-07N
www.grayhill.com
Series
Style
Angle of Throw
No. of Decks
Poles/Deck
Positions/Pole
Type of Contacts
N = Non-Shorting
S = Shorting
42D36-01-1-AJN
Bulletin 1221
Rev 04/14
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Rotary Switch Engineering Information
Catalog Ratings
Are catalog ratings misleading? In most cases,
yes. Load and life ratings shown in most catalogs
are usually invalid for most applications. This
results from the complex interplay of such factors
as environment, duty cycle, life limiting or failure
criteria, actual load, etc. Circuit designers should
be aware of these factors, and the effect they have
on the useful life of the switch in their applications.
The problem of switch rating arises from the wide
variety of requirements placed on the switch. This
includes various applications, and the sensitivity
of the switch to a change in requirements. If we
attempted to establish life ratings for all possible
applications, we would have an almost infinite
variety of ratings.
To simplify the problem, switch manufacturers,
switch users, and the military, have established
certain references for ratings. These include
loads, life requirements, environments, duty
cycles, and failure criteria. These references
are arbitrarily established. But, they allow you to
compare different switch designs. They do not,
however, match the actual requirements for most
applications.
The curves shown here are an example of some
of the life load curves. These curves are life load
characteristics of the Grayhill 42M and 44M
switches. Note that the curves consider only two
voltage sources and two types of loads. These
voltages and loads are, however, considered as
standards for testing procedures by the industry.
Curve data is based on tests conducted at
sea level, 25°C and 68% relative humidity.
Cycle = 360° rotation and return. Cycling rate
is 10 cycles per minute. Switch rating is for
non-shorting contacts.
CURRENT (AMPS)
7
6
5
VOLTAGE 115 VAC
RESISTIVE
4
3
2
1
0
0
10
25
50
CYCLES x 1,000
CURRENT (AMPS)
1.7
1.5
VOLTAGE 30 VDC
RESISTIVE
1.2
1.0
.75
INDUCTIVE
(2.8 HENRIES)
.50
.20
0
0
10
25
50
CYCLES x 1,000
www.grayhill.com
These curves allow you to predict the expected life
of the switch once you know the voltage, current
and type of load. Also note that each cycle is
approximately a 360° rotation and a return. For a
ten position switch this would be a rotation from
position 1 to position 10 and back to 1. This cycle
runs approximately ten times a minute. Thus testing
causes more electrical and mechanical wear than
what the switch incurs in actual use.
Summary
The life and load ratings in this and other catalogs
are probably not totally valid for your application.
The bright side of the picture is that in most
applications the switch will perform better than its
ratings. This is because the standard industry test
conditions are more stringent than those found in
most applications.
This difference can be very dramatic. For example,
Grayhill’s 42A and 44A Series Rotary Switches, are
rated at 1 ampere (115 Vac resistive). However,
they will operate at 5 amperes in many applications.
To see how some major factors influence switch
performance, read on.
USEFUL LIFE CRITERIA
The “useful” life of a switch in your application
depends on what you demand of it. This includes
parameters such as contact resistance, insulation
resistance, torque, detent feel, dielectric strength,
and many other factors. For example, a contact
resistance of 50 milliohms may be totally unusable
in certain applications such as a range switch in a
micro-ohm meter. In other applications a contact
resistance of 5 ohms may be perfectly satisfactory.
In establishing “useful” life for a switch in your
application, you must first determine “failure
criteria,” or “end of life” parameters. At what level
of contact resistance, dielectric strength, etc., is the
switch no longer acceptable for your application?
Most switches are acceptable on all parameters
when new. There is a gradual deterioration in
performance with life. The rate of deterioration
varies greatly with basic switch design. Often,
circuit designers select a switch on the basis of
its performance when new. This is a mistake.
The performance of the switch after several
years of equipment use is more significant. To
estimate this, first determine the life limiting or
failure criteria for your application. In most uses,
important life-limiting (failure) criteria include the
following parameters:
Contact Resistance
Insulation Resistance
Dielectric Strength
Actuating Force
Contact Resistance
This is the resistance of a pair of closed contacts.
This resistance effectively appears in series with
the load. Typical values are in the range of a few
milliohms for new switches. These values usually
increase during life. The rate of increase is greatly
affected by the voltage, current, power factor,
frequency, and environment of the load being
switched. Typical industry standard “end of life”
criteria for this parameter are:
MIL-DTL-3786:
MIL-S-6807:
MIL-S-8805:
MIL-S-83504:
20 milliohms
(Rotary Switches)
20 milliohms
(Snap Pushbuttons)
40 milliohms
(Pushbuttons)
100 milliohms
(DIP Switches)
Contact resistance can be measured by a number
of different methods. All of them are valid depending
upon the switch application and the circuit.
Grayhill uses the method in applicable military
specifications. This method specifies an open
circuit test voltage and a test current. The voltage
drop across the closed contacts is measured. The
contact resistance is determined by Ohm’s Law
from the test current and the measure voltage
drop. MIL-DTL-3786, MIL-S-6807 and MIL-S-8805
require a maximum open circuit test voltage of 2
Vdc; they require a test current of 100 milliamperes.
MIL-S-83504 requires a maximum test voltage of
50 millivolts and a test current of 10 milliamperes.
When a switch is rated to make and break 5 or more
amperes, there is a difference. Contact resistance
is determined by measuring the voltage drop while
the switch is carrying the maximum rated current.
The voltage drop that occurs across the contacts
determines, in part, the contact temperature. If
the temperature rise of the contacts is sufficient,
it affects contact material. A chemical reaction
will take place that can cause an insulating film
to appear on the contacts. This film is present
between the contacts during the next switching
operation. This film formation can cause failure
due to increasing contact resistance. For switching
of very low voltages and currents, this resistance
may be the failure criteria.
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Insulation Resistance
This is the resistance between two normally
insulated metal parts, such as a pair of terminals.
It is measured at a specific high DC potential,
usually 100 Vdc or 500 Vdc. Typical values for
new switches are in the range of thousands of
megohms. These values usually decrease during
switch life. This is a result of build-up of surface
contaminants. Typical industry standard “end of
life” criteria for the parameter are:
MIL-DTL-3786:
MIL-S-6807:
MIL-S-8805:
MIL-S-83504:
1000 megohms
(for plastic insulation)
Not specified
2000 megohms
1000 megohms
Another special test condition is commonly
specified. It measures insulation resistance for
switches in a high humidity atmosphere (90%-98%
R.H.). In this condition, condensation of moisture
commonly occurs on the surface of the insulating
material. Some types of insulation will absorb
varying amounts of moisture. This will normally
lower the insulation resistance. Typical industry
values for this condition are:
MIL-DTL-3786:
MIL-S-6807:
MIL-S-8805:
MIL-S-83504:
10 megohms
(for plastic insulation)
3 megohms after
drying
10 megohms
(for plastic material)
10 megohms
Dielectric Strength
This is the ability of the insulation to withstand
high voltage without breaking down. Typical
values for new switches in this test are in excess
of 1500 Vac RMS. During switch life, contaminants
and wear products deposit on the surface of the
insulation. This tends to reduce the dielectric
withstanding voltage. In testing for this condition,
a voltage considerably above rated voltage is
applied. Then, the leakage current is measured
at the end of life. Typical industry standard test
voltages and maximum allowable leakage currents
are as follows:
MIL-DTL-3786:
1000 Vac and 1 mA
maximum leakage
MIL-S-6807:
600 Vac RMS after life
10 microamperes
maximum leakage
MIL-S-8805:
1000 or 1000 plus
twice working voltage
(AC) RMS and 1mA
maximum leakage
MIL-S-83504:
500 Vac and 1 mA
maximum leakage
UL Standard:
900 Vac without
breakdown (UL
Standard (dependent
on test)
Voltage breakdown is another method for
www.grayhill.com
describing the ability of the insulating material
to withstand a high voltage. Voltage breakdown
describes the point at which an arc is struck and
maintained across the insulating surface with the
voltage applied between the conducting members.
ADDITIONAL LIFE FACTORS
Effect of Loads
On any switch, an arc is drawn while breaking a
circuit. This causes electrical erosion of the contacts.
This erosion normally increases contact resistance
and generates wear products. These wear products
contaminate insulating surfaces. This reduces
dielectric strength and insulation resistance.
The amount of this erosion is a function of current,
voltage, power factor, frequency and speed of
operation. The higher the current is, the hotter
the arc and the greater the erosion. The higher
the voltage is, the longer the arc duration and the
greater the erosion.
Inductance acts as an energy storage device. This
returns its energy to the circuit when the circuit
is broken. The amount of erosion in an inductive
circuit is proportionate to the amount of inductance.
Industry standard test inductance as described in
MIL-I-81023 is 140 millihenries. Other test loads
include 250 millihenries and 2.8 henries.
Effect of Ambient Temperature
Temperature extremes may affect switch
performance and life. Very high temperatures
may reduce the viscosity of lubricants. This allows
them to flow out of bearing areas. This can hasten
mechanical wear of shafts, detents, plungers, and
cause early mechanical failure. Contact lubricants
are sometimes used. Too little lubrication can
result in a high rate of mechanical wear. Too much
lubrication flowing from other bearing areas can
adversely affect dielectric strength and insulation
resistance.
Through careful design and selection of lubricants
most manufacturers attempt to minimize these
affects. Nevertheless, continual operation in high
ambient temperatures will shorten the life of a
switch regardless of design.
Extremely low ambient temperatures may also
create problems. Low temperatures may cause an
increase in the viscosity of the contact lubricant.
Higher viscosity can delay or prevent the closing
of contacts, causing high operating contact
resistance. Under certain atmospheric conditions,
ice may form on the contact surfaces. This also
causes high and erratic contact resistance.
Frequency can also affect erosion. The arcing
ends when the voltage passes through zero. To
a certain extent, the following is true. The higher
the frequency, the sooner arcing ends, the lower
the erosion.
Neither of these conditions may materially
reduce the life of the switch. However, it may
cause unsatisfactory operation. If the voltage of
the circuit is high enough, it can break down the
insulating layer. Some current will flow through the
high resistance contacts. A local heating action is
created, which tends to correct the condition in a
short period of time.
The speed of operation affects the duration of the
arc. Fast operation can extinguish the arc sooner.
This reduces the erosion, unless the air within the
switch is completely ionized.
Switches with high contact pressures may minimize
the low ambient temperature effect. This is
particularly true if the application calls for switching
signal level voltages and currents.
Actuating Force
Effects of Altitude
Rotational torque is the actuating force required to
turn a rotary switch through the various positions.
The actual torque or force required depends on
the design of the switch. It varies widely from one
design to another. See appropriate MIL Specs or
manufacturers literature for typical industry values
for specific designs.
When torque or force values are specified, it
is customary to give a minimum and maximum
value. During life, two offsetting factors may occur
to change the initial value. Relaxation of spring
members will tend to lower torque or force values.
Wear or “galling” of mating surfaces, however,
may tend to increase these values. Typical end
of life specifications may require the switch to fall
within the original range. Or, they may specify a
maximum percentage change from original value.
For example, “the rotational torque shall not change
more than 50% from its initial value.
In high altitudes, barometric pressure is lower. Low
pressure reduces the dielectric strength of the air.
The arc strikes at a lower voltage and remains
longer. This increases contact erosion. Switches
for use in high altitudes will therefore require derating in terms of loads and/or life.
Effects of Duty Cycle
Mechanical life testers cause accelerated life
testing. Testers operate switches at a rate of
approximately 10 cycles per minute. This rate is
greatly in excess of normal manual operation in
equipment. It constitutes a severe test of the switch.
Lubricants do not have an opportunity to redistribute
themselves over the bearing surfaces at this duty
cycle. The contact heating caused by arcing does
not have a chance to dissipate.
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Thus, the switch runs “hot”, increased mechanical
wear and contact erosion result. Your application
probably requires manual operation of the switch
with an attendant low duty cycle. If so, you can
usually expect much longer switch life than is
shown by the accelerated life laboratory life tests.
Conclusion
Remember, load and life ratings are based
on manufacturers’ selected references. They
include accelerated life tests and an arbitrary
set of application parameters and failure criteria.
These parameters and criteria may not always
fit your application.
Then how do you know if a switch will give reliable
performance in your application?
How do you know if it will last the life of your
equipment?
Ask the switch manufacturer. Grayhill, and most
other reputable manufacturers have compiled
vast quantities of test data. We are in a position
to give a good estimate of a switch’s performance
in many nonstandard applications. You should
provide the following data:
Expected Life:
Load:
Operation:
Application:
Environment:
Failure Criteria:
in number of cycles
voltage, current, power
factor, and frequency
manual or mechanical, duty
cycle
type of equipment
altitude,
ambient
temperature range
relative humidity, corrosive
atmosphere, shock,
vibration, etc.
end of life contact
resistance, dielectric
strength, insulation
resistance, etc.
With this information, we can usually estimate
if a given switch is suitable for your application.
www.grayhill.com
Soldering
What causes failure in a new switch after it
has been installed? The principle failure is high
contact resistance caused by solder flux on the
contact surfaces. To avoid this, be sure to follow
good soldering practices. Use the proper solder
with the proper flux core, maintain the proper
soldering temperature, use the proper soldering
iron tip for the work, and never use liquid flux
when soldering a switch.
initially and 10.0 ohm maximum dc resistance
following environmental and mechanical tests.
Many equipment manufacturers feel they are
satisfying their needs with a measurement of .025
to 10 ohms for the expected life of the switch.
Under most circumstances, standard non-sealed
switches pass the larger value easily. The lower
value (.025 ohms) requires special attention and
parts for compliance over the life of the switch.
Do not use solvent baths or washes with any
unsealed electromechanical parts. Switches,
unless they have been especially protected suffer
badly. Solvents readily dissolve fluxes and carry
them into the contact area of switches. A thin, hard
flux coats the contact surface after the solvent
evaporates. Additionally, solvents may dissolve
and wash away lubricants in switches. Lubricant
loss may prevent proper mechanical action.
Switch Selection
Exercise similar precautions when you mount a
switch to a printed circuit board. Maintain proper
solder temperatures and follow proper cleaning
techniques. Avoid subjecting these switches to
lengthy solder baths. The excessive heat can
deform the plastics.
RFI/EMI Shielding
Some applications require shielding against Radio
Frequency Interference and/or Electro-Magnetic
Interference. Experts feel that the most effective
way to achieve shielding is to provide a conductive
bridge across the component mounting hole.
They also generally agree that there is no good
method for testing shielding. So, the equipment
manufacturers themselves must identify and solve
specific problems. Component manufacturers
can generally assist in the solution of shielding
problems.
RFI/EMI testing is incorporated into MILDTL-3786 for rotary switches. Requirements
are 1.0 ohm maximum dc resistance between
the mounting bushing and operating shaft
Whenever possible, use standard switches and
contact configurations. Standards provide the
greatest economy and the best delivery. When
you need a deviation, it pays to consult with your
suppliers as soon as possible. At the early stages
of the design, there are many low cost options
for achieving the results. At the late stages of
design, some of the options may no longer be
open. For example, size may be restricted. This
might result in a more costly redesign.
Typical standard rotary options are as follows:
coded contacts, homing rotor effect, progressively
shorting contacts, PC mountable terminals, rotary
switch spring return positions, and push-to-turn
or pull-to-turn mechanisms.
Limited panel space may be solved by a concentric
shaft rotary switch. It is two rotary switches,
located one behind the other. There are other
concentric shaft possibilities. A rotary switch can
be combined with another component. These
include a potentiometer, a pushbutton switch, and
a mechanical element. The most cost effective
design may be one of these concentric options.
But, selection must be made at the outset of
equipment design.
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
1. SELECT A FACTOR
FACTOR: Current Life Rating
All switches are rated to make and break at least 100 milliamperes for 10,000 cycles of operation. Rating becomes a matter of interpretation. Carefully
review the Engineering Information on the previous pages. Ratings which assure a different life are possible; contact Grayhill.
25,000 Cycles At Load (Amps)
10,000 Cycles At Load (Amps)
6,000 Cycles At Load (Amps, UL)
19
Single Deck Switch Series Multi-Deck Switch Series
24 50/51 56 75 77 5000 08/09 42/44 43/54 53,57,59 71
—
—
15
1
—
—
.050
.200
—
—
.200
—
—
.100
—
.050
—
—
1
—
—
.250
.500
—
1,3,5*
1,3,5*
—
1,3,5*
1,3,5*
—
—
.250
.150, .250* —
—
—
* Varies with angle of throw and style.
FACTOR: Size
Maximum Dimension
Single Deck Switch Series
Multi-Deck Switch Series
In Inches (& Millimeters) 19 24 50 51 56 75 77 5000 08 09 42 44 53 57 59 71
Diameter, Behind Panel
2.280 1.015 .500 .561 .500 .298
1.015 .687 .750 1.015 1.170 1.350 1.190 1.190 .750
Length Behind Panel, 1 Deck .950 .580 .698 .698 .355 .500
.470 .960 .960 1.025 1.025 .916 .916 .916 .760
Behind Panel, Add'l Deck
— — — — — — — — .268 .268 .346 .346 .329 .326 .326 .218
Diameter, Behind Panel
(57,9) (25,8) (12,7) (14,2) (12,7) (7,6)
Length Behind Panel, 1 Deck (24,1) (14,7) (17,7) (17,7) (9,0) (12,7)
Behind Panel, Add'l Deck
— — — — — —
() (25,8) (17,4) (19,0) (25,8) (29,7) (34,3) (30,2) (30,2) (19,0)
() (11,9) (24,4) (24,4) (26,0) (26,0) (23,3) (23,3) (23,3) (19,3)
— — (6,8) (6,8) (8,8) (8,8) (8,4) (8,3) (8,3) (5,5)
* If multi-deck switch is needed, contact Grayhill.
FACTOR: Circuitry
Max. Positions
1 Deck (1Pole)*
Angle Of
Throw
Maximum
Decks**
Maximum Poles
Per Deck***
Shorting Or
Non-Shorting
15°
18°
22°30'
22°30'
12
12
12
1
12
10
8
2
N or S
N or S
N or S
N or S
Solder
Solder
Solder
Both
53
59
57
51
12
12
12
12
12
11
30°
30°
30°
30°
30°
30°
12
12
12
1
1
1
6
6
6
4
4
1
N or S
N or S
N or S
N or S
N or S
N
Both
Both
Solder
Both
Both
****
71
9
44
51
56
19
10
10
10
10
10
10
10
10
36°
36°
36°
36°
36°
36°
36°
36°
12
12
12
1
1
1
1
1
2
2
2
2
2
2
1
1
N or S
N or S
N or S
N
N or S
N or S
N or S
N or S
Both
Both
Both
PC
Both
Both
Both
Solder
8
71
42
75/77
50
56
24
5000
8
8
8
6
6
6
4
4
4
45°
45°
45°
60°
60°
60°
90°
90°
90°
12
12
1
6
12
1
12
6
1
4
4
2
3
3
2
2
2
2
N or S
N or S
N
N
N
N
N
N
N
Both
Solder
Both
Both
Solder
Both
Solder
Both
Both
9
44
50
9
44
50
44
9
50
24
20
16
16
* Maximum positions per pole depends
on number of poles per deck.
www.grayhill.com
** Based on 1 pole per deck. Number of decks
is also limited by the total number of poles.
Solder Lug
Or PC
Series
Number
*** Limited by total number of poles per switch.
****Choice of Faston or Solder Lug terminals.
Bulletin 1220
Rev 04/14
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
Rotary Switch Standard Options
• Custom Switches With No
Tooling Required
• Easily Ordered Specials
1. Dummy Terminal
Used as tie point, it is not an active switch
position. Can be located at any specified position outside of active switch terminals. Priced
as active position. Example, a three position
switch with 2 dummy terminals would be
priced as a five position switch.
.072 +.000 –.002
(1,83 –0,05)
.034 ± .003
(0,86 ± 0,07)
.045
.047 (1,19)
(1,14)
.096 ± .001
(2,44 ± 0,03)
2. Enlarged Wire Holes
.032 ± .001
(0,81 ± 0,03)
R (2)
5. Notched Terminals
Used in place of the conventional solder lug
terminals.
6. External Shorting Links
.068 ± .005
(1,73 ± 0,13)
.045
(1,14)
Series 08A, 09A, 42H, 42M, 44H, and 44M:
Lug terminals for several wires; standard in Series
08M, 09M, 53, 57, and 59 switches.
3. High Density Wiring Terminal
.096 ± .001
(2,44 ± 0,03)
.0635 + .002 –.001
(1,61 + 0,05 – 0,02)
DIAMETER
The gold-plated terminal features a slot to accept
wires in addition to the conventional wire hole.
4. Taper Tab Terminals
.095 (2,41)
.280 (7,11)
45°
.062 ± .003
(1,57 ± 0,08)
DIAMETER
External shorting links, as shown in the drawing,
can be used in place of conventional solder
lug terminals in the Series 5000, 24, 42 or 43
rotary switches. Shorted terminals can also be
accomplished internally in the Series 71 rotary
switches. Solder lug terminals can be intermixed
on the same deck.
7. Non-Standard, Non-Turn
Devices
Switches without tabs
Series 08, 09, 42 and 44: There is no additional
charge for a front support plate without a nonturn tab.
Non-turn tab of non-standard projection
Series 08:
All tabs located at .260 inch radius from centerline of switch. The following projections
(inches) are available: .121; .094; .045; .032
Series 44:
From Centerline
Projection
.375" (9,53 mm) .062" (1,57 mm)
.531" (13,49 mm) .121" or .049"
(3,07 or 1,24 mm)
8. RFI Grounding
A silver-plated shaft and wave washer improve
DC grounding of shaft to mounting bushing, thus
minimizing possible radio frequency interference. Example: static and dynamic DC resistance after 25,000 cycle life test is maximum
100 milliohms. For concentric shaft switches,
discuss grounding with factory. Special handling
charges apply to small lots.
9. Electrostatic, Electromagnetic
Shielding
A metallic shield can be added between decks.
Grounding of the shield provides additional RFV
/EMI protection, Size and shape of the shield
depends on the equipment configuration and the
amount of protection required Price is dependant onthe number and type of shields required.
10. Unidirectional Rotation
The detenting system permits rotation in only one
direction. Usable only with continuous rotation
switches. Specify direction of rotation. Applicable
to 30° and 36° throw switches only.
Switch
Options For Styles A and S
Options For All Styles
Series# 1 2 3 4 5 6 7 8 9 10
11
12
13
14
15
16
.079 (2,01)
Used in place of conventional solder lug terminals.
Taper tab terminals are gold plated.
08 x x x
x x x
09 x x x
x x x
24 x x x x x x
42 x x* x x x x x x x x x x
43 x x x x x x* x x x
44 x x* x x x x x x x x x
50/51 x x
56 x x
53/57/59 x
54 x x x x x* x x x x x
71 x*
x x
5000 x x x x x x
* See description below for limitations.
www.grayhill.com
Patent Pending
©2013
Specifications are subject to change. Please refer to the current datasheet on www.grayhill.com for the most current published specifications for this product.
11. Intermixing of Shorting and NonShorting Contacts
In some switches, non-shorting and shorting
contacts can be intermixed between decks. A
2-deck switch, for example could have shorting
contacts on deck 1 and non-shorting contacts
on deck 2. In a few switches, non-shorting
and shorting contacts can also be intermixed
between poles. A 2-pole per deck switch, for
example, could have non-shorting on pole #1,
and shorting on pole #2.
Series 08 and 09:
An 09M30 or 08M36 rotary switch can have
shorting and non-shorting contacts intermixed
between decks. Shorting and non-shorting
contacts can be intermixed between poles as
well as decks in styles A, S, P, and SP.
Example: an 08P36, 1-pole, 10 position switch
with terminals on one side of the switch would
be priced as a 2 deck, five position, one pole
per deck switch.
13. Homing Rotor (Bridging and
Shorting Deck) and Progressively
Shorting Deck
A homing rotor (bridging and shorting) switch
deck connects all terminals to the common except
the terminal in the selected switch position. For
example, in position 1, terminals 2 thru 12 are
CIRCUIT
DIAGRAM
Series 50, 51, and 56:
Non-shorting and shorting contacts can be
intermixed between poles.
Priced the same as standard switches. The
type of contacts on each pole must be precisely
indicated.
12. PC Mount Switches With
Terminals From One Side
of Switch
Series 71 PC mount switch has all terminals
on one side.
Series 08P, 09P, and 42P with non-shorting
contacts are also available with terminals limited
to one side. Contact Grayhill for a special part
number. This is accomplished by using 2 decks
per pole and placing the rotating contacts 180°
out of phase on each deck. The first deck picks
up the first half of the positions; the second
deck picks up the last half of the positions.
Common terminals are tied together by the PC
board circuitry.
A total of 12 decks (6 usable poles) is the
maximum per switch. Switches with the
maximum number of positions (12 for 30°,
or 10 for 36°) will have continuous rotation.
Rotation can be limited to less than the maximum
positions. For example, an 8 position Series 8P36
switch with terminals on one side, would pick
up 5 positions on the first deck and 3 positions
on the second deck.
Price is the same as standard switches with
comparable number of decks and positions.
www.grayhill.com
C
12
HOMING
ROTOR DECK
1
2
11
Series 42, 43, 44, and 54, in 30° or 36°:
Non-shorting and shorting contacts can be
intermixed between poles or decks.
Series 71:
Non-shorting and shorting contacts can be
intermixed between poles in fixed stop switches
only.
decks are used in combination with conventional
decks, it is important to remember that the stop
system limits the rotation of both types of decks.
For example, when a homing rotor deck Is used
in combination with a 6-position conventional
deck, the homing rotor is likewise limited to six
positions.
O-RINGS
10
3
9
4
5
8
6
7
connected to the common, and terminal 1 is
open. In position 2, terminal 3 thru 12 and 1 are
connected to the common, and terminal 2 is
open. A homing rotor deck will function for 25,000
mechanical cycles of operation.
The progressively shorting switch deck connects
consecutive switch positions to the common. For
example, in position 1, terminal 1 is connected
to the common; in position 2, terminals 1 and
2 are connected to the common; in position
CIRCUIT
DIAGRAM
C
PROGRESSIVELY
SHORTING DECK
1
2
14. Shaft and Panel Seal on
Concentric Shaft Switches
The following diagram shows the location of
the O-rings required to seal the shafts to the
bushings. When the concentric shaft switches
are sealed in this manner, the .125 inch diameter
shaft is supplied full round. Bushing-to-panel
sealing is accomplished by the panel seal kit.
15. Fixed Stop, Add-A-Pot
Switches
The rotary switch section of the Add-A-Pot rotary
switches can be built with a fixed mechanism
rather than the standard adjustable stop
mechanism. The front end of a switch of this type
is similar to the Series 43A or Series 54A style
concentric rotary switches. The total number of
decks is limited to three. The Series 43 is limited
to 1 pole per deck. Series 54 to 2 poles per deck.
3
4
5
6
3, terminals 1,2, and 3 are connected to the
common. A progressively shorting deck is limited
to a maximum of 6 positions. A progressively
shorting deck will function for 25,000 mechanical
cycles of operation.
16. Series 54 Concentric Shaft
Switch in 45°, 60°, and 90°
Throws
The Series 54A switch is available with these
angles of throw in Section A of the concentric
rotary switch. Section B is available in 30° angle
of throw only. Section A is limited to 1 to 3 decks,
non-shorting contacts, and 1 or 2 poles per deck.
Homing Rotor or Progressively Shorting decks
can be ordered as a deck of a 44A or 44M style
switch, or their sealed equivalents. Order up to
11 conventional decks and 1 special circuitry
deck. For a good detent feel, the switch is limited
to a total of 12 poles plus the homing rotor or
progressively shorting deck. Example: 6 2-pole
decks and a homing rotor. When these special
Bulletin 1222
Rev 04/14
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