A-21
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
Pushbutton
A
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
Features/Benefits
•Process sealed with disposable
splashproof boot
•Long life contact design
•Snap-fitting plunger available
•RoHS compliant models available
Typical Applications
•Instrumentation
•Telecommunications and
networking equipment
•Computers and peripherals
Specifications
CONTACT RATING: B contact material (EX25 Models): 0.4 VA max.
@ 20 V AC or DC max. G contact material (EX21 Models): 1 AMP
@120 V AC or 28 V DC or 0.4 VA max. @ 20 V AC or DC max.
Note: Break-before-make contacts. Multi-pole contacts
do not make and break simultaneously. See page A-26 for
additional ratings.
ELECTRICAL LIFE: 60,000 make-and-break cycles at full load.
CONTACT RESISTANCE: Below 50 mΩtyp. initial @
2–4 V DC, 100 mA, for both silver and gold plated contacts.
INSULATION RESISTANCE: 109Ωmin.
DIELECTRIC STRENGTH: 1000 Vrms min. @ sea level.
OPERATING TEMPERATURE: –30ºC to 75ºC.
CAP INSTALLATION FORCE: 10 lbs. max. permissible.
SOLDERABILITY: Per MIL-STD-202F method 208D, or
EIA RS-186E method 9 (1 hour steam aging).
NOTE: Any models supplied with P, R, B 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.
Materials
CASE & BUSHING: Glass filled nylon 6/6, flame retardant
(UL 94V-0).
PLUNGER: Glass filled nylon or glass filled polyester (PBT)
(UL 94V-0).
SWITCH SUPPORT: Brass or steel, matte-tin.
SWITCH SUPPORT RETAINER: Stainless steel.
N.O. & N.C. CONTACTS: EX25 MODELS: B contact material: Copper
alloy, with gold plate over nickel plate. EX21 MODELS: G contact
material: Coin silver, with gold plate over nickel plate. See page
A-26 for additional contact materials.
COMMON CONTACTS & ALL TERMINALS: Copper alloy, with
gold plate over nickel plate. See page A-26 for additional
contact materials.
TERMINAL SEAL: Epoxy.
DISPOSABLE BOOT: Vinyl splashproof boot supplied standard.
Remove and discard only after soldering and cleaning
processes are complete.
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-22 thru A-28. For additional options not shown in catalog, consult our Customer Service Center.
All models are process sealed to withstand machine soldering temperatures and pressure wash cleaning methods.
Switch Function
E121 SPDT On-Mom. 1 Amp
E221 DPDT On-Mom. 1 Amp
E125 SPDT On-Mom. 0.4VA
E225 DPDT On-Mom. 0.4VA
Plunger
S.282" high
M.331" high, snap-fitting
S1 .332" high Bushing
D1 Unthreaded
D3 .180" high, unthreaded
Contact Material
BGold
GGold over silver
PGold, matte-tin
RGold over silver,matte-tin
Seal
EEpoxy and disposable
splashproof boot
Models Available
Terminations
ARight angle, PC thru-hole
AV2 Vertical right angle, PC thru-hole
CPC Thru-hole
A3 Right angle, snap-in, PC thru-hole
AV3 Vertical right angle, snap-in, PC thru-hole
V3 .460" high, V-bracket
V4 .630" high, V-bracket
V6 .460" high, V-bracket
V8 .953" high, V-bracket
V31 .460" high, snap-in V-bracket
V41 .630" high, snap-in V-bracket
V61 .460" high, snap-in V-bracket
SWITCH FUNCTION
A-22
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
A
Pushbutton
Third Angle
Projection
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
PLUNGER
BUSHING
S
.282" HIGH
D1
UNTHREADED
D3
.180" HIGH UNTHREADED
NOTE: Caps available for all plunger options, see page A-27.
S1
.332" HIGH
M
.332" HIGH SNAP-FITTING
DPDT
1-2,4-51-3,4-6
MOM.
MOM.
ON
ON
E221
E225
DP
SPDT
1-21-3
MOM.
MOM.
ON
ON
E121
E125
SP
SCHEMATIC
CONNECTED TERMINALS
POS. 1 POS. 2
SWITCH FUNCTION
POS. 1 POS. 2
MODEL
NO.
NO.
POLES
DPDT
SPDT
Part number shown: E221SD1CBE
Not available with S1 actuator.
NOTE: Disposable splashproof vinyl over actuator and bushing supplied std., see page A-26.
Terminal Nos.
For Reference Only
Terminal Nos.
For Reference Only
Part number shown: E121SD1CGE
MOM. = Momentary
E121, E221 models with all options
when ordered with G or R contact material.
EX25 models must be ordered with B or P contact material.
EX21 models must be ordered with G or R contact material.
Not Available with D1 bushing.
C&K marking this side C&K marking this side
TERMINATIONS
A-23
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
Pushbutton
A
Third Angle
Projection
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
PC MOUNTING
PC MOUNTING
SECTION A-A
SECTION A-A
PC MOUNTING
C
PC THRU-HOLE
A3
RIGHT ANGLE, SNAP-IN, PC THRU-HOLE
A
RIGHT ANGLE, PC THRU-HOLE
A
RIGHT ANGLE, PC THRU-HOLE
A3
RIGHT ANGLE, SNAP-IN, PC THRU-HOLE
E121SD1AGE
SPDT
E221SD1AGE
DPDT
NOTE: Terminal bend radii and lead-in manufacturing option.
NOTE: Terminal bend radii and lead-in manufacturing option.
SPDT and DPDT
A-24
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
A
Pushbutton
Third Angle
Projection
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
TERMINATIONS
SECTION A-A
SECTION A-A
PC MOUNTING
PC MOUNTING
E121SD1AV2GE
SPDT
E221SD1AV2GE
DPDT
AV3
VERTICAL RIGHT ANGLE, SNAP-IN, PC THRU-HOLE,
.150" PITCH
AV2
VERTICAL RIGHT ANGLE, PC THRU-HOLE,
.150" PITCH
AV2
VERTICAL RIGHT ANGLE, PC THRU-HOLE,
.150" PITCH
AV3
VERTICAL RIGHT ANGLE, SNAP-IN, PC THRU-HOLE,
.150" PITCH
NOTE: Terminal bend radii and lead-in manufacturing option.
NOTE: Terminal bend radii and lead-in manufacturing option.
A-25
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
Pushbutton
A
Third Angle
Projection
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
TERMINATIONS
SNAP-IN
Dim 'A'
PC MOUNTING
SNAP-IN
Dim 'A'
PC MOUNTING
1
C
2
NO
3
NC
(0,76) (1,27)
.030 X .050 TYP.
.122 DIA.
.185
(4,70)
DIM ’A’
.250
(6,35)
.360
(9,14)
.192
(4,88)
.180
(4,57)
.020 TYP.
(0,51)
.185 TYP.
(4,70)
.750
(19,05)
.050
(1,27)
.060 MAX.
(1,53)
C&K MARKING ON
OPPOSITE SIDE
PC MOUNTING
V31, V41
VERTICAL MOUNT, V-BRACKET, SNAP-IN
V3, V4
VERTICAL MOUNT, V-BRACKET
V31, V41
VERTICAL MOUNT, V-BRACKET, SNAP-IN
V3, V4
VERTICAL MOUNT, V-BRACKET
V6, V8
VERTICAL MOUNT, V-BRACKET
V61, V81
VERTICAL MOUNT, V-BRACKET, SNAP-IN
V3, V31
.460 (11,68)
V4, V41
.630 (16,00)
DIM ‘A’
OPTION
CODE
V6, V61
.460 (11,68)
V8, V81
.953 (24,21)
DIM ‘A’
OPTION
CODE
V3, V31
.460 (11,68)
V4, V41
.630 (16,00)
DIM ‘A’
OPTION
CODE
E121SD3__GE
SPDT
E221SD3__GE
DPDT
E121SD3__GE
SPDT
A-26
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
A
Pushbutton
Third Angle
Projection
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
TERMINATIONS
CONTACT MATERIAL
SEAL
Disposable splashproof boot supplied standard.
Remove and discard boot
only after
soldering and
cleaning processes are complete.
Dim 'A
'
SNAP-IN
PC MOUNTING
E
EPOXY SEAL AND DISPOSABLE SPLASHPROOF BOOT
V6, V8
VERTICAL MOUNT, V-BRACKET
V61, V81
VERTICAL MOUNT, V-BRACKET, SNAP-IN
E221SD3V6GE
DPDT
V6, V61
.460 (11,68)
V8, V81
.953 (24,21)
DIM ‘A’
OPTION
CODE
* Note: See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications.
1
CONTACTS & TERMINALS: Copper alloy, with gold plate over nickel plate.
2
N.O. AND N.C. CONTACTS: Coin silver, with gold plate over nickel plate.
3
COMMON CONTACTS & ALL TERMINALS: Copper alloy, with gold plate
over nickel plate.
4
TERMINALS: Copper alloy, with matte-tin alloy over nickel plate.
NOTE: Any models supplied with P, R, B or G contact material are RoHS compliant.
E121, E221 models with all options when ordered with mandatory
G, or R contact material.
P or B contact material must be ordered with EX25 models.
R or G contact material must be ordered with EX21 models.
OPTION
CODE TERMINAL
PLATING RATINGS
GOLD
1
GOLD
3
MATTE-TIN
4
GOLD
1
MATTE-TIN
4
LOW LEVEL/DRY CIRCUIT
LOW LEVEL/DRY CIRCUIT OR POWER
EX25 MODELS ONLY: 0.4 VA MAX.
@ 20 V AC OR DC MAX.
EX21 MODELS ONLY: 0.4 VA MAX @ 20 V AC OR
DC MAX. OR 1 AMP @ 120 V AC OR 28 V DC.
B
P
G
R
GOLD OVER
SILVER
2,3
CONTACT
MATERIAL
A-27
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
Pushbutton
A
Third Angle
Projection
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
AVAILABLE HARDWARE
TYPICAL APPLICATION
Cap
PART NO.
708901000
WHITE
708902000
BLACK
708903000
RED
Material: Nylon
Finish: Gloss
Cap, Snap-fitting plunger
PART NO.
894001000
WHITE
894002000
BLACK
894003000
RED
Material: Nylon
Finish: Gloss
Cap, Snap-fitting plunger
PART NO.
894101000
WHITE
894102000
BLACK
894103000
RED
Material: Nylon
Finish: Gloss
Cap
PART NO.
484601000
WHITE
484602000
BLACK
484603000
RED
Material: Nylon
Finish: Gloss
PART NO.
798201000
WHITE
798202263
BLACK
798203000
RED
Material: Nylon
Finish: Matte
Cap
PART NO.
752701000
WHITE
752702000
BLACK
752703000
RED
Material: Nylon
Finish: Gloss
Cap
PART NO.
801801000
WHITE
801802000
BLACK
801803000
RED
Material: Nylon
Finish: Gloss
.047" (1,19) PANEL THK.
PART NO.
432501000
432502263
432503000
.062" (1,57) PANEL THK.
PART NO.
432601000
432602263
432603000
.090" (2,29) PANEL THK.
PART NO.
432701000
432702263
432703000
.125" (3,18) PANEL THK.
PART NO.
432801000
WHITE
432802263
BLACK
432803000
RED
NOTE: Other cap colors available, consult Customer Service Center.
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.
.200 DIA.
(5,08 )
.120
(3,05)
.155
(3,94)
AVAILABLE HARDWARE
A-28
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
A
Pushbutton
E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
PANEL INSERT
WITH HOLE FOR LED
PART NO.
894901000
894902000
894903000
BLANK PANEL INSERT
WITHOUT HOLE FOR LED
PART NO.
476601000
WHITE
476602000
BLACK
476603000
RED
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
Special colors, custom markings available, consult Customer Service Center.
Third Angle
Projection
