8020 Series
Snap-acting Momentary Pushbutton Switches
Typical Applications
• Instrumentation
• Computer peripherals
• Telecommunications equipment
A
Pushbutton
Features/Benefits
• Positive tactile feel
• Multi-positions available
• Wide variety of termination options
• Epoxy terminal seal compatible with
bottom wash cleaning
• RoHS compliant models available
Models Available
Specifications
Materials
CONTACT RATING: B contact material (8X25 Models): 0.4 VA max.
@ 20 V AC or DC maximum. G contact material (8X21, U8X1
Models): 1 AMP @ 120 V AC or 28 V DC or 0.4 VA max. @ 20 V
AC or DC max. Note: Break-before-makecontacts. Multi-pole
contacts do not make and break simultaneously. See page A-43
for additional ratings.
ELECTRICAL LIFE: 60,000 make-and-break cycles at full load.
CONTACT RESISTANCE: Below 50 mΩ typ. initial @
2-4 V DC, 100 mA, for both silver and gold plated contacts.
INSULATION RESISTANCE: 109Ω min.
DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.
OPERATING TEMPERATURE: 8X2X MODELS: –30ºC to 75ºC.
U8X1 MODELS: –30ºC to 65ºC.
CAP INSTALLATION FORCE: 10 lbs. max. permissible.
SOLDERABILITY: Per MIL-STD-202F method 208D, or EIA RS-186E
method 9 (1 hour steam aging).
CASE: Glass filled nylon 6/6 or diallyl phthalate (DAP),
flame retardant (UL 94V-0).
NOTE: Any models supplied with B, P, R, or G contact material are RoHS compliant.
NOTE: Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
PLUNGER: Glass filled nylon or glass filled polyester (PBT) (UL 94V-0).
CAP & FRAME: Nylon, black, standard.
BUSHING: Brass or zinc, nickel plated.
HOUSING: Stainless steel.
SWITCH SUPPORT: Brass or steel, matte-tin plated.
N.O. & N.C. CONTACTS: 8X21, U8X1 MODELS: G contact material:
Coin silver, with gold plate over nickel plate. See page A-43 for
additional contact materials.
8X25 MODELS: B contact material: Copper alloy, with gold plate
over nickel plate. See page A-43 for additional contact materials.
COMMON CONTACT & ALL TERMINALS: Copper alloy, with gold
plate over nickel plate.
TERMINAL SEAL: Epoxy. Refer to soldering and cleaning
Technical Data Chapter.
HARDWARE: Nut & Locking Ring: Brass, nickel plated;
Lockwasher: Steel, nickel plated.
Build-A-Switch
To order, simply select desired option from each category and place in the appropriate box. Available options are shown
and described on pages A-30 thru A-45. For additional options not shown in catalog, consult Customer Service Center. All
models have epoxy terminal seal and are compatible with all “bottom-wash” PCB cleaning methods.
Switch Function
8121 SPDT On-Mom. 1 Amp
8125 SPDT On-Mom. 0.4VA
8221 DPDT On-Mom. 1 Amp
8225 DPDT On-Mom. 0.4VA
8321 3PDT On-Mom. 1 Amp
8325 3PDT On-Mom. 0.4VA
8421 4PDT On-Mom. 1 Amp
8425 4PDT On-Mom. 0.4VA
Note: UL models
available, see page A-30
and A-31.
Actuator or Plunger
S Plunger
NONE Snap-in
J80 Snap-in
J81 Snap-in w/frame
J82 Snap-in w/frame for LED
J83 Snap-in w/frame &
flush cap
J84 Snap-in w/frame for LED,
flush cap
J85 Snap-in w/frame & LED
J95 PC w/V-bracket & LED
L Plunger
M Snap-fitting plunger
Terminations
A Right angle, PC thru-hole
AV2 Vertical right angle, PC thru-hole
C PC Thru-hole
Z Solder lug
A2 Right angle, PC thru-hole
A3 Right angle, snap-in, PC thru-hole
Bushing
D9 .280” high, keyway
H .250” high, flat
NONE No bushing
choice required
D .280” high, keyway
D2 .288” high, flat
D3 .180” high
D8 .288” high, flat
H9 .250” high, flat, hi torque
Y .350” high, keyway
Y3 6.35mm high,
keyway, hi torque
Y4 .378” high, flat, hi torque
Y9 .350” high, keyway
Contact Material
B Gold
P Gold, matte-tin
G Gold over silver
R Gold over silver,
matte-tin
Frame Color
2 Black
NONE Models
without frame
1 White
3 Red
5 Yellow
6 Green
9 Gray
Seal
E Epoxy
I Epoxy potted
base
Cap Color
2 Black
NONE Models
without caps
1 White
3 Red
A4 Right angle, PC thru-hole, reversed terminals
A6 Right angle, PC thru-hole
AV1 Vertical right angle, PC thru-hole
AV3 Vertical right angle, snap-in, PC thru-hole
R Right angle with PCB
R2 Right angle with PCB, reversed terminals
V2
V3
V4
V6
V7
V8
V9
4 Orange
5 Yellow
6 Green
7 Blue
9 Gray
.555” high, V-bracket
.460” high, V-bracket
.630” high, V-bracket
.460” high, V-bracket
.630” high, V-bracket
.953” high, V-bracket
1.150” high, V-bracket
LED Color
3 Red
NONE Models
without LED
5 Yellow
6 Green
V31 .460” high, snap-in V-bracket
V61 .460” high, snap-in V-bracket
W .750” long, wire wrap
W1 .964” long, wire wrap
W3 .425” long, wire wrap
W4 1.062” long, wire wrap
Z3 Quick connect
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-29
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
SWITCH FUNCTION
Pushbutton
A
SWITCH FUNCTION
POS. 1
POS. 2
CONNECTED TERMINALS
POS. 1
POS. 2
C&K marking on
opposite side
C&K marking on
opposite side
UL/CSA*
NO.
POLES
MODEL NO.
8121
SP
MODEL
NO.
U811
8125
ON
MOM.
ON
MOM.
SCHEMATIC
1-3
1-2
SPDT
SPDT
Terminal Nos.
For Reference Only
Part number shown: 8121SHZGE
8221
DP
U821
8225
ON
MOM.
ON
MOM.
1-3,4-6
1-2,4-5
DPDT
DPDT
Terminal Nos.
For Reference Only
Part number shown: 8221SHZGE
3P
8321
U831
8325
ON
MOM.
ON
MOM.
1-3,4-6,7-9
1-2,4-5,7-8
3PDT
3PDT
Terminal Nos.
For Reference Only
Part number shown: 8321SHZGE
MOM. = Momentary
8X25 models must be ordered with B or P contact material.
*U811 thru U841 model numbers
with all options (except R, R2 terminations)
when ordered with G or R contact material.
8X21 and U8X1 models must be ordered with G or R contact material.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-30
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
SWITCH FUNCTION
A
CONNECTED TERMINALS
POS. 1
POS. 2
C&K marking on
opposite side
C&K marking on
opposite side
Pushbutton
SWITCH FUNCTION
POS. 1
POS. 2
UL/CSA*
NO.
POLES
4P
MODEL
NO.
MODEL NO.
8421
U841
8425
ON
MOM.
ON
MOM.
1-3,4-6,7-9,10-12
SCHEMATIC
1-2,4-5,7-8,10-11
4PDT
4PDT
Terminal Nos.
For Reference Only
Part number shown: 8421SHZGE
MOM. = Momentary
8X25 models must be ordered with B or P contact material.
* U811 thru U841 model numbers
with all options (except R, R2 terminations)
when ordered with G or R contact material.
8X21 and U8X1 models must be ordered with G or R contact material.
CAP COLOR
ACTUATOR—SNAP-IN FRONT MOUNT
J80
ACTUATOR OR PLUNGER
FRAME COLOR
SNAP-IN
PANEL MOUNTING
OPTION
CODE
**
CAP AND FRAME COLOR
2
BLACK
NONE
No Frame Color (J80 option)
1
WHITE
3
RED
NOTE: No frame color choice required.
4
ORANGE
** Increase this dim. to .620/.625 (15,75/15,88) for .091/.125 (2,31/3,18) thk. panels.
5
YELLOW
6
GREEN
7
BLUE
9
GRAY
J81
SNAP-IN WITH FRAME
PANEL MOUNTING
Other colors available, consult Customer
Service Center. Cap and Frame Finish: matte.
NOTE: Caps and frames available separately,
see pages A-44 and A-45.
**
NOTE: Available with C, W-W4, Z or Z3 terminations and SPDT and DPDT models only.
** Increase this dim. to .620/.625 (15,75/15,88) for .091/.125 (2,31/3,18) thk. panels.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-31
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
CAP COLOR
Pushbutton
A
ACTUATOR—SNAP-IN FRONT MOUNT
ACTUATOR OR PLUNGER
FRAME COLOR
J83 SNAP-IN WITH FRAME AND FLUSH CAP
PANEL MOUNTING
**
J82 SNAP-IN WITH FRAME FOR LED
LED not included.
For LED information, see page A-45.
J84 SNAP-IN WITH FRAME FOR LED, FLUSH CAP
LED not included.
For LED information, see page A-45.
OPTION
CODE
CAP AND FRAME
COLOR
2
BLACK
1
WHITE
3
RED
4
ORANGE
5
YELLOW
6
GREEN
7
BLUE
9
GRAY
Other colors available, consult
Customer Service Center.
Cap and Frame Finish: matte.
Available with C, W-W4, Z or Z3 terminations and
SPDT and DPDT models only.
NOTE: Caps and frames available separately,
see pages A-44 and A-45.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-32
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
CAP COLOR
ACTUATOR—SNAP-IN FRONT MOUNT
ACTUATOR OR PLUNGER
LED COLOR
A
FRAME COLOR
Pushbutton
J85 SNAP-IN WITH FRAME AND LED
PANEL MOUNTING
*
* Increase this dim. to .620/.625 (15,75/15,88) for
.091/.125 (2,31/3,18) thk. panels.
8121J85ZGE223
SPST
OPTION
CODE
Available with C, W-W4, Z or Z3
terminations and SPDT models only.
For LED information see page A-45.
NOTE: Caps & frames available
separately, see pages A-44 and A-45.
CAP AND FRAME
COLOR
OPTION
CODE
LED COLOR
2
BLACK
3
RED
1
WHITE
5
YELLOW
3
RED
6
GREEN
4
ORANGE
5
YELLOW
6
GREEN
7
BLUE
9
GRAY
For LED information see page A-45.
CAP COLOR
ACTUATOR—PC MOUNT
ACTUATOR OR PLUNGER
LED COLOR
J95 PC WITH V-BRACKET AND LED
PC MOUNTING
OPTION
CODE
CAP AND FRAME
COLOR
OPTION
CODE
LED COLOR
2
BLACK
3
RED
1
WHITE
5
YELLOW
3
RED
6
GREEN
4
ORANGE
5
YELLOW
6
GREEN
7
BLUE
9
GRAY
8121J95V3GE23
SPST
For LED information see page A-45.
NOTE: Caps available separately, see page A-44.
Available with V3 terminations and SPDT models only.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-33
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
Pushbutton
A
PLUNGER
ACTUATOR OR PLUNGER
S PLUNGER
AVAILABLE
BUSHINGS
DIM. ‘A’
FOR C, W-W4, Z & Z3
TERMINATIONS
DIM. ‘A’
FOR A, A2, A3, A4, A6,
AV-A 3, R & R2
TERMINATIONS
DIM. ‘A’
FOR V3-V61
TERMINATIONS
D, D9
.244 (6,20)
.228 (5,79)
.224 (5,69)
H, H9
.218 (5,54)
.202 (5,13)
.198 (5,03)
Y, Y9
.203 (5,16)
.187 (4,75)
.183 (4,65)
Y3
NONE
NO PLUNGER CHOICE REQUIRED
(JXX ACTUATORS)
(5,13)
(5,03)
Y4
.185 (4,70)
.169 (4,29)
.165 (4,19)
D2, D8
N/A
.232 (5,89)
.228 (5,79)
D3
N/A
.162 (4,11)
.158 (4,01)
AVAILABLE
BUSHINGS
DIM. ‘B’
FOR C, W-W4, Z & Z3
TERMINATIONS
DIM. ‘B’
FOR A, A2, A3, A4, A6,
AV-A 3, R & R2
TERMINATIONS
DIM. ‘B’
FOR V3-V61
TERMINATIONS
Y, Y9
.178 (4,52)
.162 (4,11)
.158 (4,01)
Y4
.090 (2,29)
.074 (1,88)
.070 (1,78)
AVAILABLE
BUSHINGS
DIM. ‘C’
FOR C, W-W4, Z & Z3
TERMINATIONS
DIM. ‘C’
FOR A, A2, A3, A4, A6,
AV-A 3, R & R2
TERMINATIONS
DIM. ‘C’
FOR V3-V61
TERMINATIONS
D, D9
.297 (7,54)
.281 (7,14)
.277 (7,04)
H, H9
.267 (6,78)
.251 (6,38)
.247 (6,27)
Y, Y9
.259 (6,58)
.243 (6,17)
.239 (6,07)
L PLUNGER
M SNAP-FITTING PLUNGER
(5,54)
Y3
(6,78)
(6,37)
(6,27)
Y4
.259 (6,58)
.243 (6,17)
.239 (6,07)
D2, D8
N/A
.273 (6,93)
.269 (6,83)
D3
N/A
.361 (9,17)
.357 (9,07)
N/A = NOT AVAILABLE
NOTE: When selecting plunger option, bushing selection must also be made, see next page. No plunger option is required when any
JXX actuator option is selected. Additional plunger lengths are available on SPDT and DPDT models, consult Customer Service Center.
Not all plunger lengths sufficient for use with caps, see page A-44.
BUSHING
NONE
NO BUSHING
CHOICE REQUIRED
(JXX ACTUATORS)
D .280” HIGH THREADED, KEYWAY
D9 .28034” HIGH UNTHREADED,
H .250”34 HIGH THREADED, FLAT
H9 .250”34 HIGH UNTHREADED,
KEYWAY
FLAT
Y .350” HIGH THREADED, KEYWAY
Y9 .350” HIGH UNTHREADED, KEYWAY
1/4-40 UNS-2A
D9 bushing standard with A-A6,
H bushing standard with C, W-W4, Z or Z3 terminations.
R, R2 AV-AV3 terminations.
H, H9 bushings not available on single pole models with
A3-A6, R, R2 terminations.
Will withstand 12 in./lbs. of torque with
no distortion.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-34
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
BUSHING
Y4 .378” HIGH THREADED, FLAT
D2 .288” HIGH THREADED, FLAT
D8 .288” HIGH UNTHREADED, FLAT
D3 .180” HIGH UNTHREADED
1/4-40 UNS-2A
D2, D8 bushings not available with
C, W-W4, Z, Z3 terminations.
Y3 & Y4 bushings not available on single pole models with
A3-A6, R, R2 terminations. Will withstand 12 in./lbs. of torque
with no distortion.
D3 bushing available with
A, A2, A3, AV, AV2, AV3 and
V2-V61 terminations only.
NOTE: No bushing option choice required when JXX actuator option is selected. When selecting bushing option, plunger
selection must also be made, see previous page. Plunger lengths vary with bushing and termination options selected.
NOTE: Two mounting nuts, locking ring and lockwasher supplied standard with threaded bushings.
Optional mounting nut and locking ring styles available, see section “Technical Data and Additional Hardware”.
TERMINATIONS
Z SOLDER LUG
C PC THRU-HOLE
PC MOUNTING
Not available with J95 actuator,
P or R contact material.
SPDT thru 4PDT
Z3 QUICK CONNECT
SPDT thru 4PDT
W W1, W3, W4 WIRE WRAP
DIM `A'
SPDT thru 4PDT
Not available with J95 actuator option.
OPTION
CODE
DIM ‘A’
W
.750 (19,05)
W1
.964 (24,49)
W3
.425 (10,80)
W4
1.062 (26,97)
Not available with J95 actuator option.
Not available with J95 actuator, P or R contact
material. Mating quick connector available,
order part number 530100000, page A-44.
SPDT thru 4PDT
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-35
www.ckswitches.com
A
Pushbutton
Y3 6.35mm THREADED, KEYWAY
8020 Series
Snap-acting Momentary Pushbutton Switches
Pushbutton
A
TERMINATIONS
A RIGHT ANGLE, PC THRU-HOLE
8121SD9AGE
SPDT
.138
(3,51)
A3 RIGHT ANGLE, SNAP-IN, PC THRU-HOLE
PC MOUNTING
Not available with JXX actuators and I seal.
Terminal bend radii and lead-in manufacturing option.
A RIGHT ANGLE, PC THRU-HOLE
8221SD9AGE
DPDT
SECTION A-A
A3 RIGHT ANGLE, SNAP-IN, PC THRU-HOLE
PC MOUNTING
Not available with JXX actuators and I seal option.
Terminal bend radii and lead-in manufacturing option.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-36
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
TERMINATIONS
A
Pushbutton
A RIGHT ANGLE, PC THRU-HOLE
PC MOUNTING
8321SD9AGE
3PDT
SECTION A-A
Not available with JXX actuators and I seal option.
Terminal bend radii and lead-in manufacturing option.
A2 RIGHT ANGLE, PC THRU-HOLE
PC MOUNTING
8121SD9A2GE
SPDT
Not available with JXX actuators, I seal option.
Terminal bend radii and lead-in manufacturing option.
A4 RIGHT ANGLE, PC THRU-HOLE, REVERSED TERMINALS
8121SD9A4GE
SPDT
Not available with JXX actuators, D3, H, H9, Y3, Y4 bushings and I seal.
Terminal bend radii and lead-in manufacturing option.
The A4 and R2 termination options are functionally identical and fit the same PC mounting pattern.
The switches, however, are shifted relative to the mounting holes. The PC pattern must clear the
switch support legs. Unlike the R2, the A4 option is available with UL/CSA.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-37
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
Pushbutton
A
TERMINATIONS
A6 RIGHT ANGLE, PC THRU-HOLE
PC MOUNTING
8121SD9A6GE
SPDT
The A6 and R termination options are functionally identical and fit the same PC mounting pattern,
The switches, however, are shifted relative to the mounting holes. The PC pattern must clear the
Not available with JXX actuators, D3, H, H9, Y3, Y4 bushings and I seal.
Terminal bend radii and lead-in manufacturing option.
switch support legs. Unlike the R, the A6 option is available with UL/CSA.
R RIGHT ANGLE WITH PCB
PC MOUNTING
8121SD9RGE
SPDT
Not available with JXX actuators, D3, H, H9, Y3, Y4 bushings, I seal option.
R termination not UL/CSA approved.
R2 RIGHT ANGLE WITH PCB, REVERSED TERMINALS
PC MOUNTING
8121SD9R2GE
SPDT
Reversed terminals
Not available with JXX actuators, D3, H, H9, Y3, Y4 bushings, I seal option.
R2 termination not UL/CSA approved.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-38
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
TERMINATIONS
A
Pushbutton
AV2 VERTICAL RIGHT ANGLE, PC THRU-HOLE, .150” PITCH
8121SD9AV2GE
SPDT
AV3
VERTICAL RIGHT ANGLE, SNAP-IN,,
AV1
VERTICAL RIGHT ANGLE, EXTENDED,
PC THRU-HOLE, .150” PITCH
PC THRU-HOLE, .150” PITCH
PC MOUNTING
Not available with JXX actuators and I seal.
Terminal bend radii and lead-in manufacturing option.
AV2 VERTICAL RIGHT ANGLE, PC THRU-HOLE, .150” PITCH
8221SD9AV2GE
DPDT
AV3
VERTICAL RIGHT ANGLE, SNAP-IN,
PC THRU-HOLE, .150” PITCH
AV1
VERTICAL RIGHT ANGLE, EXTENDED,
PC MOUNTING
PC THRU-HOLE, .150” PITCH
.15 (3,8)
.33 TYP.
(8,4)
Not available with JXX actuators and I seal.
Terminal bend radii and lead-in manufacturing option.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-39
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
Pushbutton
A
TERMINATIONS
AV2 VERTICAL RIGHT ANGLE, PC THRU-HOLE, 150” PITCH
8321SD9AV2GE
3PDT
AV3
VERTICAL RIGHT ANGLE, SNAP-IN,
AV1
VERTICAL RIGHT ANGLE, EXTENDED,
PC MOUNTING
PC THRU-HOLE, .150” PITCH
PC THRU-HOLE, .150” PITCH
.15 (3,8)
.33 TYP.
(8,4)
Not available with JXX actuators and I seal.
Terminal bend radii and lead-in manufacturing option.
AV2 VERTICAL RIGHT ANGLE, PC THRU-HOLE, 150” PITCH
8421SD9AV2GE
4PDT
AV3
VERTICAL RIGHT ANGLE, SNAP-IN,
AV1 VERTICAL RIGHT ANGLE, EXTENDED,
PC MOUNTING
PC THRU-HOLE, .150” PITCH
PC THRU-HOLE, .150” PITCH
Not available with JXX actuators and I seal.
Terminal bend radii and lead-in manufacturing option.
V2, V6, V7, V8 VERTICAL MOUNT, V-BRACKET
V61 VERTICAL MOUNT, V-BRACKET, SNAP-IN
PC MOUNTING
8121SD3__GE
SPDT
Not available with JXX actuators and I seal.
OPTION CODE
DIM ‘A’
V2
.555 (14,10)
V6, V61
.460 (11,68)
V7
.630 (16,00)
V8
.953 (24,21)
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-40
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
TERMINATIONS
A
Pushbutton
V2, V6, V7, V8 VERTICAL MOUNT, V-BRACKET
V61 VERTICAL MOUNT, V-BRACKET, SNAP-IN
PC MOUNTING
8221SD3__GE
DPDT
OPTION
CODE
Not available with JXX actuators and I seal.
DIM ‘A’
V2
.555 (14,10)
V6, V61
.460 (11,68)
V7
.630 (16,00)
V8
.953 (24,21)
V2, V7, V8 VERTICAL MOUNT, V-BRACKET
PC MOUNTING
8321SD3__GE
3PDT
OPTION
CODE
Not available with JXX actuators and I seal.
DIM ‘A’
V2
.555 (14,10)
V7
.630 (16,00)
V8
.953 (24,21)
V2, V7, V8 VERTICAL MOUNT, V-BRACKET
PC MOUNTING
8421SD3__GE
4PDT
OPTION
CODE
Not available with JXX actuators and I seal.
DIM ‘A’
V2
.555 (14,10)
V7
.630 (16,00)
V8
.953 (24,21)
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-41
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
Pushbutton
A
TERMINATIONS
V3, V4, V9 VERTICAL MOUNT, V-BRACKET
V31 VERTICAL MOUNT, V-BRACKET, SNAP-IN
PC MOUNTING
8121SD3__GE
SPDT
OPTION
CODE
DIM ‘A’
V3, V31
Not available with J8X actuators and I seal.
V3, V4, V9 VERTICAL MOUNT, V-BRACKET
V31 VERTICAL MOUNT, V-BRACKET, SNAP-IN
.460 (11,68)
V4
.630 (16,00)
V9
1.150 (29,21)
PC MOUNTING
8221SD3__GE
DPDT
OPTION
CODE
DIM ‘A’
V3, V31
.460 (11,68)
V4
.630 (16,00)
V9
1.150 (29,21)
Not available with J8X actuators and I seal.
V4, V9 VERTICAL MOUNT, V-BRACKET
PC MOUNTING
.630
(16,00)
8321SD3V4GE
3PDT
OPTION
CODE
Not available with JXX actuators and I seal.
DIM ‘A’
V4
.630 (16,00)
V9
1.150 (29,21)
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-42
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
TERMINATIONS
A
Pushbutton
V4, V9 VERTICAL MOUNT, V-BRACKET
PC MOUNTING
.630
(16,00)
8421SD3V4GE
4PDT
OPTION
CODE
Not available with JXX actuators and I seal.
DIM ‘A’
V4
.630 (16,00)
V9
1.150 (29,21)
CONTACT MATERIAL
OPTION
CODE
CONTACT
MATERIAL
B
TERMINAL
PLATING
GOLD 1
GOLD 1
MATTE-TIN 4
P
G
GOLD 3
GOLD OVER SILVER 2,3
MATTE-TIN 4
R
RATINGS
LOW LEVEL/DRY CIRCUIT
8x25 MODELS ONLY: 0.4 MAX.
@ 20 V AC OR DC MAX.
LOW LEVEL/DRY
CIRCUIT OR POWER
8X21, U8X1 MODELS ONLY: 0.4 VA MAX
@ 20 V AC OR DC MAX. OR 1 AMP
@ 120 V AC OR 28 V DC.
* Note: See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications.
1 ALL CONTACTS & TERMINALS: Copper alloy, with gold plate over nickel plate.
NOTE: Any models supplied with B, P, R or G contact material are RoHS compliant.
2 N.O. AND N.C. CONTACTS: Coin silver, with gold plate over nickel plate.
U811-U841 models
with all options (except R, R2 terminations) when ordered with
mandatory G or R contact material.
3 COMMON CONTACTS & ALL TERMINALS: Copper alloy, with gold plate
over nickel plate.
B or P contact material must be ordered with 8X25 models.
4 TERMINALS: Copper alloy, with matte-tin over nickel plate.
G or R contact material must be ordered with 8X21, U8X1 models.
P or R contact material not available with Z, Z3 terminations.
SEAL
E EPOXY SEAL
I EPOXY POTTED BASE
NO.
POLES
DIM ‘A’
SP
.410 (10,41)
DP
.440 (11,18)
3P
.505 (12,83)
4P
.505 (12,83)
NOTE: Available with C, W-W4, Z, Z3 terminations only.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-43
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
AVAILABLE HARDWARE
Pushbutton
A
Cap
Cap
PART NO.
708901000
708902000
708903000
708904000
708905000
708906000
708907000
708909000
PART NO.
WHITE
BLACK
RED
ORANGE
YELLOW
GREEN
BLUE
GRAY
Material: Nylon
Finish: Gloss
752701000
752702000
752703000
752704000
752705000
752706000
752707000
752709000
PART NO.
WHITE
BLACK
RED
ORANGE
YELLOW
GREEN
BLUE
GRAY
Material: Nylon
Finish: Gloss
Cap, Snap-fitting plunger
PART NO.
452D01000
452D02000
452D03000
452D04000
452D05000
452D06000
452D07000
452D09000
Cap
Cap, Snap-fitting plunger
Material: Nylon
Finish: Gloss
894101000
894102000
894103000
894104000
894105000
894106000
894107000
894109000
Cap, J80, J81, J82, J83 & J84 options only
PART NO.
WHITE
BLACK
RED
ORANGE
YELLOW
GREEN
BLUE
GRAY
Material: Nylon
Finish: Gloss
Frame
WHITE
BLACK
RED
ORANGE
YELLOW
GREEN
BLUE
GRAY
Material: Nylon
Finish: Gloss
PART NO.
WHITE
BLACK
RED
ORANGE
YELLOW
GREEN
BLUE
GRAY
801801000
801802000
801803000
801804000
801805000
801806000
801807000
801809000
484601000
484602000
484603000
484604000
484605000
484606000
484607000
484609000
PART NO.
798201000
798202263
798203000
798204000
798205000
798206000
798207000
798209000
WHITE
BLACK
RED
ORANGE
YELLOW
GREEN
BLUE
GRAY
Material: Nylon
Finish: Gloss
Frame
WHITE
BLACK
RED
ORANGE
YELLOW
GREEN
BLUE
GRAY
Material: Nylon
Finish: Matte
Cap, J85 & J95 options only
PART NO.
PART NO.
PART NO.
615602263 BLACK
613302263 BLACK
Material: Nylon
Finish: Matte
Material: Nylon
Finish: Matte
459701000
459702000
459703000
459704000
459705000
459706000
459707000
459709000
Material: Nylon
Finish: Matte
Fits Z3 Termination
female connector
NOTE: Additional nuts, locking rings and lockwashers available separately, see section
“Technical Data and Additional Hardware”.
PART NO.
Other cap & frame colors available, consult Customer Service Center.
530100000
Available in loose pieces.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-44
www.ckswitches.com
8020 Series
Snap-acting Momentary Pushbutton Switches
AVAILABLE HARDWARE
A
.090” (2,29) PANEL THK.
.125” (3,18) PANEL THK.
PART NO.
PART NO.
432702263
432802263 BLACK
TYPICAL APPLICATION
Above frames (part nos. 432XXXXXX) are also available with insert which accepts LED for
indicator light assembly. Order insert separately from frame. Blank insert panel (without hole
for LED) also available. LED not included.
Panel Inserts
PANEL INSERT
WITH HOLE FOR LED
BLANK PANEL INSERT
WITHOUT HOLE FOR LED
PART NO.
PART NO.
894902000
476602000 BLACK
Special colors, custom markings available, consult Customer Service Center.
LED INFORMATION
SWITCHES WITH LED SUPPLIED: J85, J95 OPTIONS:
Rectangular LEDs are supplied on 8020 Series pushbutton switches with J85 and J95 options. These LEDs are factory installed and are not
replaceable. The following specifications apply:
OPTION
CODE
COLOR
TYP.
INTENSITY
6
Green
1.0 mcd
3
Red*
0.5 mcd
5
Yellow
4.0 mcd
TYP.
FORWARD
VOLTAGE
MAX RATINGS AT 25ºC AMBIENT TEMPERATURE
TYP.
CONTINUOUS
POWER
FORWARD FORWARD
FORWARD CURRENT
DISSIPATION
CURRENT VOLTAGE
20 mA
2.1 V
10 mA
20 mA
2.5 V
50 mA
125 mW
30 mA
75 mW
50 mA
125 mW
Process Information: Soldering to LED leads must be completed within 5 seconds at
500ºF (260ºC) maximum.
Caution: Circuit elements must limit forward current of LED to 50mA max. continuous.
* Extra-bright red LED available (typ. intensity 4.5 mcd), consult Customer Service Center.
LEDs are not supplied with J82, J84 options. LED snaps into switch frame surrounding
actuator and is wired externally.
Flat denotes
cathode.
.230 DIA.
(5,84˘)
.200 DIA.
(5,08˘)
.025 SQ.
TYP. (0,63)
.030
(0,76)
.750
(19,05)
.340
(8,64)
Suggested LED for J82 & J84 options.
Dimensions for reference only.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
29 Aug 18
A-45
www.ckswitches.com
Pushbutton
Frames snap into panel opening and are independent from switch mounting. Accurate positioning of the PC
mounted switch relative to the panel opening is necessary to provide proper clearance between actuator and
frame. Available in two basic styles and four panel thicknesses .047-.125 in. Material: Nylon. Finish: Matte.
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