KM Series
Subminiature Pushbutton Switches
Typical Applications
• Alarm systems
• Computers
• Detector switch application
and overtravel
• RoHS compliant
A
Pushbutton
Features/Benefits
• Reliable contact design
•
Available with pretravel
Models Available
Specifications
Materials
CONTACT RATING: Q contact material (KM11, KM12 Models):
0.25 AMPS @ 125 V AC or DC (UL). See following pages for
additional ratings.
HOUSING & BUSHING: 6/6 nylon (UL94V-2), black
ELECTRICAL LIFE: 10,000 actuations min. at full load
MOVABLE CONTACT: B contact material: Bronze or copper,
with gold plate over nickel plate. See following pages for
additional contact materials.
ACTUATOR: 6/6 nylon (UL 94V-2), natural. Internal o-ring seal,
available on KM11 models
CONTACT RESISTANCE: Below 30 mΩ typ. initial @ 2-4 V DC,
100 mA, for both silver and gold plated contacts
INSULATION RESISTANCE: 109Ω min.
STATIONARY CONTACTS & TERMINALS: B contact material:
Copper, with gold plate over nickel plate. See following pages for
additional contact materials.
DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level
OPERATING TEMPERATURE: –30ºC to 85ºC
RETURN SPRING: Music wire, phosphor coated
CAP INSTALLATION FORCE: 10 lbs. max. permissible
MOUNTING NUT: Brass, nickel plated
NOTE: Any models supplied with Q or B contact material are RoHS compliant.
TERMINAL SEAL: Epoxy
NOTE: Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
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 following pages. For additional options not shown in catalog, consult Customer Service Center.
Switch Function
KM12 On-Mom., SPDT
KM11 Off-Mom., SPST, N.O.
Actuator
02 .398” high, .122” dia. KM12
01 .122” dia. KM11
Bushing/Mounting Style
A Right angle
RR 1/4-40 thread, .225” high
Terminations
05 .110” quick connect
08 Right angle, PC thru-hole
02 PC Thru-hole
Contact Material
B Gold
Q Silver
Seal
NONE No seal
E Epoxy
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
8 Aug 22
A-67
www.ckswitches.com
KM Series
Subminiature Pushbutton Switches
SWITCH FUNCTION
Pushbutton
A
SWITCH FUNCTION
POS. 1
NO. POLES
MODEL NO.
SP
KM11
POS. 2
CONNECTED TERMINALS
POS. 1
POS. 2
SCHEMATIC
OFF
MOM.
OPEN
2-1
MOM.
2-1
4-3
SPST N.O.
SPST
Part number shown: KM1101RR05BE
SP
KM12
ON
SPDT
SPDT
Part number shown: KM1202A08BE
ACTUATOR
02 .398” HIGH, .122” DIA.
01 .122” DIA.
KM12 models only
KM11 models only
NOTE: Caps available for plunger options
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
8 Aug 22
A-68
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KM Series
Subminiature Pushbutton Switches
BUSHING/ MOUNTING STYLE
A
RR 1/4-40 THREAD, .225” HIGH
KM12 models only
Pushbutton
A RIGHT ANGLE
KM11 models only
PANEL MOUNTING
PC MOUNTING
KM11 models
KM11 models only
KM12 models only.
TERMINATIONS
05
08 RIGHT ANGLE, PC THRU-HOLE
.110” QUICK CONNECT
02 PC THRU-HOLE
KM12 models only
KM11 models only
CONTACT MATERIAL
OPTION
CODE
RoHS
COMPLIANT *
RoHS
COMPATIBLE *
CONTACT AND TERMINAL MATERIAL
B
YES
YES
GOLD 1
LOW LEVEL/DRY CIRCUIT
Q
YES
YES
SILVER 2
POWER
RATINGS
0.4 VA MAX. @ 20 V AC OR DC MAX.
0.25 AMPS @ 125 V AC OR DC (KM11, KM12) (UL)
* Note: See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications.
1 STATIONARY
CONTACTS & TERMINALS: Copper, with gold plate over nickel plate.
MOVABLE CONTACT: Phosphor bronze or beryllium copper, with gold plate over
nickel plate.
2 STATIONARY CONTACTS & TERMINALS: Copper, silver plated (standard with all
termination options).
MOVABLE CONTACT: Phosphor bronze or beryllium copper, silver plated.
3 STATIONARY CONTACTS & TERMINALS: Copper, with gold plate over nickel plate
over silver plate.
MOVABLE CONTACT: Phosphor bronze or beryllium copper, with gold plate over
nickel plate over silver plate.
NOTE: Any models supplied with Q or B contact material are RoHS compliant.
KM11, KM12 models
when ordered with ‘Q’ contact material.
SEAL
NONE NO SEAL
E EPOXY SEAL
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
8 Aug 22
A-69
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KM Series
Subminiature Pushbutton Switches
AVAILABLE HARDWARE
Pushbutton
A
Cap, KM11 and KM12 models
.120
(3,05)
Cap, KM11 and KM12 models
.375 DIA.
(9,53 )
.200 DIA.
(5,08 )
.250
(6,35)
.120
(3,05)
.155
(3,94)
PART NO.
PART NO.
708901000 WHITE
708902000 BLACK
708903000 RED
752701000 WHITE
752702000 BLACK
752703000 RED
Material: Nylon
Finish: Gloss
Material: Nylon
Finish: Gloss
Cap, KM11 and KM12 models
Cap, KM11 models
.450 SQ.
(11,43)
.310 DIA.
(7,87 )
.195
(4,95)
.138
(3,51)
.250
(6,35)
PART NO.
.240
(6,10)
PART NO.
PART NO.
801801000 WHITE
801802000 BLACK
801803000 RED
484601000 WHITE
484602000 BLACK
484603000 RED
798201000 WHITE
798202263 BLACK
798203000 RED
Material: Nylon
Finish: Gloss
Material: Nylon
Finish: Gloss
Material: Nylon
Finish: Matte
NOTE: Other cap colors available, consult Customer Service Center.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
8 Aug 22
A-70
www.ckswitches.com
