Single Deck Rotary Switches
Series 50 SERIES 51
0.5" Diameter, 200mA,
.698" Behind Panel
Features
• Optional Complete Seal for
PC Board Assembly and Cleaning
• Small 1/2" Diameter
• Choice of 22.5°, 30°, 36°, 45°, 60°
and 90° Angles of Throw
• Up to 4 Poles on 1 Deck
• Up to 16 Positions Per Switch
• PC or Solder Lug Termination
• Positive Shaft Grounding for
EMI/RFI Shielding
in inches (and millimeters)
PC Mount Style
.250±.015
(6,35±0,38)
A
.375±.015
(9,53±0,38)
.125 (3,18)
REF.
POS. 1
Grayhill part number and date code
marked on label. Customer part
number marked on request. Military
part number marked when required.
Angle Angle of
A Throw
45°
60°
90°
101.25°
105°
108°
Angle
A
112.5°
120°
135°
D
Series 50
Series 51
.500 ± .015
.562 ± .015
(12,70 ± 0,38) (14,27 ± 0,38)
Solder Lug Style
.658±.015
(16,71±0,38)
.375±.015
(9,53±0,38)
TERMINAL SEALANT
IN STYLE T
PC COMMON DETAIL
All angles of throw, except 22.5°
.171 ± .015
(4,34 ± 0,38)
Ø .025 ± .002
(0,64 ± 0,05)
.062 ± .003
(1,57 ± 0,08)
Dimension
B
Style T
.576 ± .015
(14,63 ± 0,38)
All Others
All 22.5°
.537 ± .015
(13,64 ± 0,38)
.537 ± .015
(13,64 ± 0,38)
.064 ± .005
(1,63 ± 0,13)
.020 ± .004
(0,51 ± 0,10)
.234±.015
(5,94±0,38)
.250±.015
(6,35±0,38)
Front view same as
PC Mount style.
TERMINAL
SEALANT
IN STYLE "T"
SOLDER LUG TERMINAL DETAIL
All angles of throw, except 22.5°
.250±.015
(6,35±0,38)
Ø.125 + .001 - .002
(3,18 + 0,03 - 0,05)
COMMON Ø .025 ± .002
(0,64 ± 0,06) AND EXTEND
TO SAME PLANE AS
POSITION TERMINALS
.020 ± .004
(0,51 ± 0,10)
.020 ± .003
(0,51 ± 0,08)
Dimension
TERMINALS ARE
.016 ± .003 (0,41 ± 0,08) SQ.
1/4-28 UNF-2A
THREAD
PC TERMINAL DETAIL
All angles of throw, except 22.5°
.125 ± .015
(3,18 ± 0,38)
2 1 10 9
.153±.015
(3,89±0,38)
GRAYHILL
Rotary Switches
Ø.125 +.001- .002
(3,18 + 0,03 -0,05)
.093 ± .005
(2,36 ± 0,13)
Angle of
Throw
22.5°
30°
36°
.171 ± .015
(4,34 ± 0,38)
.250±.015
(6,35±0,38)
DIMENSION
D
OPTIONAL
PANEL SEAL
GASKET
Side View
All others as shown at left
.125±.015
(3,18±0,38)
GRAYHILL
.203 ± .003
(5,16 ± 0,08)
ACROSS
FLATS
DIMENSION "B"
2 1 10 9
DIMENSIONS
1/4-28 UNF-2A
THREAD
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
.032 ± .004
(0,81 ± 0,10)
.062 ± .004
(1,57 ± 0,10)
SOLDER LUG TERMINAL DETAIL 22.5°
.064 ± .005
(1,63 ± 0,13)
.016 ± .004
(0,41 ± 0,10)
TERMINAL
SEALANT
IN STYLE "T"
.021 ± .004
(0,53 ± 0,10)
.046 ± .004
(1,17 ± 0,10)
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Single Deck Rotary Switches
Circuit Diagrams and Rear Views: Solder Lug and PC Mount
Rear View
SOLDER Lug
COMMON TERMINAL
(1 POLE)
.382 ± .015 (9,70 ± 0,13)
DIAMETER CIRCLE OF
TERMINAL CENTERS
.156 ± .015
(3,96 ± 0,13)
11.25˚
POS. 1
22.5˚
LOCATION
OF COMMONS
2 POLES
Circuit as Viewed From Shaft End
PC MOuNt
.500 ± .015
(12,7 ± 0,13)
DIA. CIRCLE
OF CENTERS
11.25˚
POS. 1
22.5˚
.156 ± .015
(3,96 ± 0,13)
POS. 1
15˚
8
6
POLE 1
POS. 1
POLE 1
FOUR POLES
THREE POLES
Dimension A, diameter circle of common centers,
is .175 (4,45) for Solder Lug and .232 (5,89) for PC.
.175 ± .005
(4,45 ± 0,13)
DIAMETER
CIRCLE OF
COMMON
CENTERS
6
1
6
9
7
C2
6
5
1
C2
6
2
5
9
5
1
5
1
3
2
8
9
10
C2
1
C1
4
2
ONE POLE
36° Angle
of Throw
2
3
TWO POLES
7
7
6
8
1
4
12
C1
7
5
11
C4
4
30° Angle
of Throw
FOUR POLES
6
5
8
C2
C1
4
2
3
10
C3
10
6
2
3
9
8
C1
3
1
4
7
6
LOCATION OF COMMONS
2 POLES
45˚
11
3
12
TWO POLES
12
8
7
4
22.5˚
POS. 1
5
C3
4
11
C1
THREE POLES
LOCATION OF COMMONS
2 POLES
COMMON TERMINAL (1 POLE)
.320 ± .015 (8,13 ± 0,38) DIAMETER
CIRCLE OF TERMINAL CENTERS
10
10
C2
2
3
9
8
7
4
3
5 4
1
45° Angle
of Throw
2
3
TWO POLES
ONE POLE
COMMON TERMINAL (1 POLE)
.320 ± .015 (8,13 ± 0,38) DIAMETER
CIRCLE OF TERMINAL CENTERS
5
5
6
4
4
30˚
1
3
POS. 1
LOCATION OF COMMONS
2 POLES
60˚
6
C2
.125 ± .015
(3,18 ± 0,38)
C1
3
1
2
2
ONE POLE
TWO POLES
60° Angle
of Throw
COMMON TERMINAL (1 POLE)
LOCATION OF COMMONS
2 POLES
.320 ± .015 (8,13 ± 0,38)
DIAMETER CIRCLE OF
TERMINAL CENTERS
3
4
3
4
90° Angle
of Throw
C2
.125 ± .015
(3,18 ± 0,38)
C1
2
45˚
1
ONE POLE
POS. 1
2
1
TWO POLES
90˚
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
.125 ± .015
(3,18 ± 0,38)
.125 ± .015
(3,18 ± 0,38)
11
ONE POLE
.320 ± .015 (8,13 ± 0,38) DIAMETER
CIRCLE OF TERMINAL CENTERS
36˚
6
22.5° Angle
of Throw
TWO POLES
12
COMMON TERMINAL (1 POLE)
18˚
POS. 1
2
7
7
LOCATION OF COMMONS
2 POLES
DIM. A ±
.005 (0,13)
10
15
16
1
ONE POLE
9
14
8
3
5 4
8
POS. 1
1
12 13
11
10
9
2
7
5
30˚
15
16
C1
8
.156 ± .005 (3,96 ± 0,13)
14
C2
LOCATION
OF COMMONS
2 POLES
COMMON TERMINAL
(1 POLE)
COMMON TERMINAL (1 POLE)
.382 ± .005 (9,70 ± 0,13)
DIAMETER CIRCLE OF
TERMINAL CENTERS
12 13
11
10
9
Single Deck Rotary Switches
SPECIFICATIONS
Military Qualification
The dimensions for qualified switches are
the same as those indicated in the drawings
of standard switches. Switches with standard
variations, such as shaft and bushing length,
which do not affect switch performance, can be
marked as qualified product. Contact Grayhill
for complete information on variations.
36°, 45°, 60°, 90° (Series 50): The C and M
style switches are qualified to MIL‑S‑3786/20.
They include the following:
Solder lug or PC terminals
With or without panel seal
Series 50 qualified switches may be ordered
by the ‘M’ number or by the Grayhill part
number.
30° (Series 51): The C and M style switches
are qualified to MIL‑S‑3786/35. They include
the following:
Solder lug or PC terminals
With or without panel seal
Series 51 qualified switches may be ordered
by the ‘M’ number or by the Grayhill part
number.
Electrical Ratings
Insulation Resistance: 1,000 Mohms
minimum between mutually insulated parts.
Voltage Breakdown: 600 Vac minimum
between mutually insulated parts at standard
atmospheric pressure.
Life Expectancy: Listed for the voltage source
and make and break current levels. Contact
Grayhill for more information if any of the
following is true: the life limiting criteria are
more critical than those listed; longer operation
is required; a larger make and break current is
required; the operating environment includes
elevated temperatures or reduced pressures.
Contact Carry Rating: Switch will carry
6 amperes continuously with a maximum
contact temperature rise of 20°C.
Life Expectancy: With the limiting criteria stated
here, the Series 50 and 51 with non-shorting
contacts will switch the following loads at
atmospheric and reduced pressures for 25,000
cycles of operations. One cycle is 360° rotation
clockwise and 360° return.
At 85°C, atmospheric pressure
200 mA,
28 Vdc resistive
150 mA, 115 Vac resistive
30 mA,
28 Vdc inductive
100 mA, 28 Vdc lamp load
75 mA, 220 Vac lamp load
At 25°C, reduced pressure (70,000 feet)
200 mA,
28 Vdc resistive
150 mA, 115 Vac resistive
75 mA, 220 Vac resistive
Contact Resistance: 20 milliohms maximum,
(10 milliohms initially).
SPECIFICATIONS: Other
Rotary Switches
Additional Characteristics
Contact Type and Forces: Shorting or nonshorting wiping contacts with over 80 grams
of contact force.
Shaft Flat Orientation: Flat opposite
contacting position of pole number one (see
circuit diagrams).
Terminals: Switches have the full circle of
terminals, regardless of number of active
position.
Stop Strength: 7.5 pound-inches minimum
Rotational Torque: 8–24 ounce-inches,
depending on the number of poles.
Process Sealed–Style T
Materials and Finishes
Switch Base: Thermoset
Detent Rotor: Nylon
Shaft, Stop Blades, Stop Arm,Thrust washer,
and Retaining Ring: Stainless steel
Detent Balls: Steel, nickel-plated
Bushing: Zinc, tin-zinc plated
Detent and Contact Springs: Stainless steel
Common Ring: Brass, gold-plated over silver
plate.
Terminals: Brass, gold-plated over silver plate
and nickel plate
Rotor Contact: Precious metal alloy, goldplated
Panel Seal: Silicone rubber
Shaft Seal: Fluorosilicone
Mounting Nuts: Brass, tin-zinc plated
Mounting Hardware: One mounting nut .089"
thick by .375" across flats and one internal tooth
lockwasher are supplied with the switch.
Maximum Mounting Torque: 15in-lbs
1/4" SHAFT: Style K
Switch can be mounted on PC board with other
components and subjected to wave soldering
and conventional board cleaning techniques. No
secondary wiring or soldering is necessary.
.250
±.015
.219
±.004
Bushing is o-ring sealed; epoxy potting seals the
terminals and the rear of the switch. Designed
for PC assembly, this sealing technique can also
be applied to solder lug terminal switches. A
bushing to panel seal can also be added to the
process sealed versions. Military qualified versions are available, see ordering information.
.250 +.001
-.002
.250
±.015
.340
±.005
CIRCLE SHOWING
DIMENSIONS OF
HOLE TO BE CUT
IN PANEL.
0.208
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
3/8-32 UNEF-2A
THREAD
.375
±.015
1/8"Shaft
Ø0.254
POS. 1
"E" Style
Ø0.280
POS. 1
0.240
"K" Style
Ø0.380
POS. 1
0.350
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Single Deck Rotary Switches
Suggested Adjustable Stop
Substitution Guide
Fixed
Stop
Style
50A
50C
50CP
50M
50MP
50P
50S
50SP
Adj. Stop
Style
Equivalent
Fixed
Stop
Style
Adj. Stop
Style
Equivalent
50D
50CD
50CDP
50CD*
50CDP*
50DP
50D*
50DP*
51A
51C
51CP
51M
51MP
51P
51S
51SP
51D
51CD
51CDP
51CD*
51CDP*
51DP
51D*
51DP*
Adjustable Stops: Style D
Adjustable stops permit the user to set and reset
the number of positions per poles. Shown in
the diagram, a plastic washer can be removed
to reveal slots at the base of the bushing. Stop
blades can be inserted into the appropriate
slots to limit switch rotation. Positions per pole
configuration can thus be changed to meet the
needs of the application. Dimensions are the
same as the fixed stop version, when plastic
washer is in place. Most desirable for prototype
work. Readily available from local distributor.
*Form fit and function equivalents, but not watertight sealed
to the panel.
Stop
Blade
Slots
Plastic
washer
Stop
Blades
Accessory: Non-Turn Washers
In Inches (and millimeters)
Shaft and panel seal: Styles S and M
Shaft and panel seal switches
are watertight to the panel.They
are not totally process sealed
like the Style “T”. Panel is sealed
by a gasket at the base of the
bushing. Shaft is sealed by an
O-ring inside the bushing. After
mounting, seals do not alter
switch dimensions. See Style
“S” (standard switches) and
Style “M” (military switches) in
the Choices and Limitations
chart.
SEAL
.025
± .001
(0,64
± 0,03)
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)
Part No. 50J1066
Cut round hole for the bushing and for
the non-turn tab. Washer fits the double D
bushing flats. Washer is sold only when accompanied by an order for a like number of
switches. Washer is 302 stainless steel.
Dimensions are in millimeters
Form, fit and function equivalent
to standard shaft switches. The
dimensions shown have evolved
as the most popular for this
type of switch. See Style “B”
in the Choices and Limitations
chart. Previous users may
have ordered these switches
by a non-descriptive part number containing a “Y”. Contact
Grayhill, if in doubt about a
cross-reference.
.125±.015
(3,18±0,38)
.032±.005
(0,81±0,13)
"A"
.050±.005
(1,27±0,13)
metric shaft and bushing: Style E
9,53
±0,38
6,0±0,08
"A"
3,15
±0,12
6,35
±0,38)
4,0
±0,03
7,0
±0,51
M7 x 0,75
Metric standard dimensions
for the shaft and bushing are
shown in the drawing. Other
dimensions approximately the
same as shown in dimensional
drawing. Contact Grayhill for
exact dimensions. See Style “E”
in the Choices and Limitations
chart.
11,13
± 0,13
DIA.
0,64
± 0,05
90˚ ± 1˚
.015
(0,38)
RADIUS
MAX.
CL
5,08
± 0,05
2,36
± 0,13
1,57 ± 0,08
Part No. 71J1103
Designed to fit the double flatted bushing of
the metric dimensioned bushing, this nonturn washer permits a round hole for the
bushing and the tab while still preventing
switch rotation. Washer is only sold when
accompanied by a like number of switches.
Washer is 302 stainless steel.
0.032
0.375
0.125
0.187
Part No. 50J5140-4
Designed to fit the single flatted bushing of
the "K" style switches, this non-turn washer
prevents switch rotation when using a full
round hole in the panel. Washer is only sold
when accompanied by a like number of
switches. Washer is 302 stainless steel.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
SCREWDRIVER SLOTTED SHAFT: Style B
.400
± .005
DIA.
(10,16
± 0,13)
Single Deck Rotary Switches
Choices and Limitations: Series 50
A = Standard, 1/8" Shaft
B = Screwdriver Slot Shaft
C = Military, Without Panel Seal
D = Adjustable Stop (Adj. Stop)
P = PC Mount Terminals
S = Shaft/Panel Seal (S/P Seal)
T = Process Sealed
E = Metric, 4mm Shaft
K = 1/4" Shaft
M = Military
Standard Style
Angle
Style Choices1
of
Series Std., 1/8" Shaft
1/4" Shaft
Metric, 4mm Shaft Terminals Throw
A
AT
B
BS
BST
BT
D
S
ST
K
KS
KST
KT
KB
KBS
KBST
KT
BP
BPT
BSP
BSPT
DP
P
PT
SP
SPT
KP
KPT
KSP
KSPT
KBP
KBSP
KBSPT
KBT
E
ES
EST
ET
EB
EBS
EBST
EBT
Solder
Lug
Number of
Positions
Per Pole
Shorting or
Non-Shorting
Contacts
36°
1
2
02 thru 10
02 thru 05
N or S
N or S
45°
1
2
02 thru 08
02 thru 04
N
N
60°
1
2
02 thru 06
02 or 03
N
N
90°
1
2
02 thru 04
02
N
N
36°
1
2
02 thru 10
02 thru 05
N or S
N or S
45°
1
2
02 thru 08
02 thru 04
N
N
60°
1
2
02 thru 06
02 or 03
N
N
90°
1
2
02 thru 04
02
N
N
50
EP
EPT
ESP
ESPT
EBP
EBSP
KBSPT
EBT
Number
of
Poles
PC Mount
Rotary Switches
Military Style
Angle
Style Choices
of
Series Std., 1/8" Shaft
1/4" Shaft
Metric, 4mm Shaft Terminals Throw
C
CB
CBT
CD
CT
M
MB
MBT
MT
KM
KMB
KMBT
KMT
EM
EMB
EMBT
EMT
Solder
Lug
KMBP
KMBPT
KMP
KMPT
EMBP
EMBPT
EMP
EMPT
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
Number of
Positions
Per Pole
Shorting or
Non-Shorting
Contacts
36°
1
2
02 thru 10
02 thru 05
N or S
N or S
45°
1
2
02 thru 08
02 thru 04
N
N
60°
1
2
02 thru 06
02 or 03
N
N
90°
1
2
02 thru 04
02
N
N
36°
1
2
02 thru 10
02 thru 05
N or S
N or S
45°
1
2
02 thru 08
02 thru 04
N
N
60°
1
2
02 thru 06
02 or 03
N
N
90°
1
2
02 thru 04
02
N
N
50
CBP
CBPT
CDP
CP
CPT
MBP
MBPT
MP
MPT
Number
of
Poles
PC Mount
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Single Deck Rotary Switches
Choices and Limitations: Series 51
A = Standard, 1/8" Shaft
B = Screwdriver Slot Shaft
C = Military, Without Panel Seal
D = Adjustable Stop (Adj. Stop)
P = PC Mount Terminals
S = Shaft/Panel Seal (S/P Seal)
T = Process Sealed
E = Metric, 4mm Shaft
K = 1/4" Shaft
M = Military
Standard Style
Angle
Style Choices1
of
Series Std., 1/8" Shaft
1/4" Shaft
Metric, 4mm Shaft1 Terminals Throw
A
B
S
BS
51
AT
BT
ST
BST
A
AT
B
BS
BST
BT
D
S
ST
P
BP
SP
BSP
PT
BPT
SPT
BSPT
SEE BELOW
K
KS
KST
KT
E
ES
EST
ET
Solder
Lug
See Below
PC Mount
See Below
KP
KPT
KSP
KSPT
EP
EPT
ESP
ESPT
PC Mount
22.5°
30°
22.5°
30°
Number of
Positions
Per Pole
Shorting or
Non-Shorting
Contacts
1
2
02 thru 16
02 thru 08
N or S
N or S
1
2
3
4
02 thru 12
02 thru 06
02 thru 04
02 or 03
N or S
N or S
N or S
N or S
1
2
02 thru 16
02 thru 08
N or S
N or S
1
2
3
4
02 thru 12
02 thru 06
02 thru 04
02 or 03
N or S
N or S
N or S
N or S
Military Style
Angle
Style Choices
of
Series Std., 1/8" Shaft
1/4" Shaft
Metric, 4mm Shaft Terminals Throw
51
1
C
CB
CBT
CD
CT
M
MB
MBT
MT
KM
KMB
KMBT
KMT
EM
EMB
EMBT
EMT
CBP
CBPT
CDP
CP
CPT
MBP
MBPT
MP
MPT
KMBP
KMBPT
KMP
KMPT
EMBP
EMBPT
EMP
EMPT
Solder
Lug
30°
PC Mount
30°
Number
of
Poles
Number of
Positions
Per Pole
Shorting or
Non-Shorting
Contacts
1
2
3
4
02 thru 12
02 thru 06
02 thru 04
02 or 03
N or S
N or S
N or S
N or S
1
2
3
4
02 thru 12
02 thru 06
02 thru 04
02 or 03
N or S
N or S
N or S
N or S
Contact Grayhill if 1/4" or metric shaft required with a 22.5° angle of throw.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
BP
BPT
BSP
BSPT
DP
P
PT
SP
SPT
Solder
Lug
See BELOW
Number
of
Poles
Single Deck Rotary Switches
Additional Features
Economy keylock switch, isolated position, spring
return, and coded switches are available in similar
series. See Keylock and Special Function Rotary
Switch sections.
Available from your local Grayhill Distributor.
For prices and discounts, contact a local Sales Office,
an authorized local Distributor, or Grayhill.
Ordering Information: Series 50
50AT36–01–1–10N–F
Series: Series 50 (36°, 45°, 60°, or 90°)
Style*: Letters from Choices Chart
Angle of Throw: 36, 45, 60, or 90
Stop Arrangement: Needed only with 1 pole switches with
maximum positions. Leave blank for continuous rotation;
add F for fixed stop.
Type of Contacts: N = Non-shorting, S = Shorting
Positions Per Pole: 02 as a minimum to the maximum allowable
for the angle of throw and the number of poles per the Choices Chart.
Use Letters AJ in this location if adjustable stop switch is ordered.
Poles per Deck: See chart
Number of Decks: 01 only
* All rotary switches that are required to have military designated markings and testing adhering to MIL-3786 are to be ordered by specifying
the military part number identified on the appropriate slash sheet.
Rotary Switches
Ordering Information: Series 51
51SPT30–01–1–12S–F
Series: Series 51 (30°; 22.5°)
Style*: Letters from Choices Chart
Angle of Throw: Use 22 (for 22.5°), 30
Stop Arrangement: Needed only with 1 pole switches with
maximum positions. Leave blank for continuous rotation;
add F for fixed stop.
Type of Contacts: N = Non-shorting, S = Shorting
Positions Per Pole: 02 as a minimum to the maximum allowable
for the angle of throw and the number of poles per the Choices Chart.
Use Letters AJ in this location if adjustable stop switch is ordered.
Poles per Deck: See chart
Number of Decks: 01 only
* All rotary switches that are required to have military designated markings and testing adhering to MIL-3786 are to be ordered by specifying
the military part number identified on the appropriate slash sheet.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
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