C&K KM Series
Subminiature Pushbutton Switches
Features/Benefits
•
Reliable contact design
•
Available with pretravel
and overtravel
•
Extended overtravel option
•
RoHS compliant
Typical Applications
•
Alarm systems
•
Computers
•
Detector switch application
A
Pushbutton
Models Available
Specifications
CONTACT RATING: Q contact material (KM11, KM12 Models):
0.25 AMPS @ 125 V AC or DC (UL); (KM33 Model): 1 AMP @
125 V AC or 28 V DC. See page A-67 for additional ratings.
ELECTRICAL LIFE: 10,000 actuations min. at full load.
CONTACT RESISTANCE: Below 30 mΩ typ. initial @ 2-4 V DC,
100 mA, for both silver and gold plated contacts.
INSULATION RESISTANCE: 109
Ω
min.
DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.
OPERATING TEMPERATURE: –30ºC to 85ºC.
CAP INSTALLATION FORCE: 10 lbs. max. permissible.
NOTE:
Any models supplied with Q or B contact material are RoHS compliant. For the
latest information regarding RoHS compliance, please go to: www.ittcannon.com/rohs.
NOTE:
Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
Materials
HOUSING & BUSHING: 6/6 nylon (UL94V-2), black.
ACTUATOR: 6/6 nylon (UL 94V-2), natural. Internal o-ring seal,
available on KM11 & KM33 models.
MOVABLE CONTACT: B contact material: Bronze or copper,
with gold plate over nickel plate. See page A-67 for
additional contact materials.
STATIONARY CONTACTS & TERMINALS: B contact material:
Copper, with gold plate over nickel plate. See page A-67 for
additional contact materials.
RETURN SPRING: Music wire, phosphor coated.
MOUNTING NUT: Brass, nickel plated.
TERMINAL SEAL: Epoxy.
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-66 and A-68. For additional options not shown in catalog, consult Customer Service Center.
Switch Function
KM12
On-Mom., SPDT
KM11
Off-Mom., SPST, N.O.
KM33
On-Mom., SPST, N.C.
Actuator
02
.398" high, .122" dia. KM12
01
.122" dia. KM11,
Stepped, .108” dia. KM33
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
WC
Wire lead
Contact Material
B
Gold
Q
Silver
Seal
NONE
No seal
E
Epoxy
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A–65
www.ittcannon.com
C&K KM Series
Subminiature Pushbutton Switches
A
Pushbutton
SWITCH FUNCTION
SWITCH FUNCTION
POS. 1
POS. 2
CONNECTED TERMINALS
POS. 1
POS. 2
NO. POLES
MODEL NO.
SCHEMATIC
KM11
SP
OFF
MOM.
OPEN
2-1
SPST N.O.
KM33
ON
MOM.
2-1
OPEN
SPST N.C.
SPST
Part number shown: KM1101RR05BE
SP
KM12
ON
MOM.
2-1
4-3
SPDT
SPDT
Part number shown: KM1202A08BE
ACTUATOR
02
.398" HIGH, .122" DIA.
01
.122" DIA.
KM12 models only.
KM11 models only.
KM33 models only.
NOTE:
Caps available for plunger options, see page A-68.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A–66
www.ittcannon.com
C&K KM Series
Subminiature Pushbutton Switches
BUSHING/ MOUNTING STYLE
A
RIGHT ANGLE
A
1/4-40 THREAD, .225" HIGH
RR
Pushbutton
KM12 models only.
KM11 & KM33 models only.
PANEL MOUNTING
PC MOUNTING
KM11 & KM33 models.
KM11 models only.
KM12 models only.
TERMINATIONS
05
.110" QUICK CONNECT
08
RIGHT ANGLE, PC THRU-HOLE
02
PC THRU-HOLE
WC
WIRE LEAD
22 AWG
insulated
wire.
KM12 models only.
KM11 models only.
UL style 1015.
CONTACT MATERIAL
OPTION
CODE
RoHS
COMPLIANT *
YES
RoHS
COMPATIBLE *
YES
CONTACT AND TERMINAL MATERIAL
RATINGS
B
Q
GOLD
1
SILVER
2
LOW LEVEL/DRY CIRCUIT
0.4 VA MAX. @ 20 V AC OR DC MAX.
0.25 AMPS @ 125 V AC OR DC (KM11, KM12) (UL)
1 AMP @ 125 V AC OR 28 V DC (KM33).
YES
YES
POWER
* 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. For the
latest information regarding RoHS compliance, please go to: www.ittcannon.com/rohs.
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
A–67
www.ittcannon.com
C&K KM Series
Subminiature Pushbutton Switches
A
Pushbutton
Cap, KM33 models
AVAILABLE HARDWARE
Cap, KM11 models
Cap, KM11 models
.245 DIA.
(6,22 )
.187
(4,75)
.120
(3,05)
.200 DIA.
(5,08 )
.375 DIA.
(9,53 )
.250
(6,35)
.081
(2,03)
.155
(3,94)
.120
(3,05)
PART NO.
PART NO.
PART NO.
785101000
WHITE
785102000
BLACK
785103000
RED
Material: Nylon
Finish: Gloss
Cap, KM11 models
708901000
WHITE
708902000
BLACK
708903000
RED
Material: Nylon
Finish: Gloss
Cap, KM11 models
752701000
WHITE
752702000
BLACK
752703000
RED
Material: Nylon
Finish: Gloss
.310 DIA.
(7,87 )
.138
(3,51)
.250
(6,35)
.195
(4,95)
.450 SQ.
(11,43)
.240
(6,10)
PART NO.
PART NO.
PART NO.
801801000
WHITE
801802000
BLACK
801803000
RED
Material: Nylon
Finish: Gloss
484601000
WHITE
484602000
BLACK
484603000
RED
Material: Nylon
Finish: Gloss
798201000
WHITE
798202263
BLACK
798203000
RED
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
A–68
www.ittcannon.com
