C&K KM Series Subminiature Pushbutton Switches and overtravel • Extended overtravel option • RoHS compliant Typical Applications • Alarm systems • Computers • Detector switch application 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); (KM33 Model): 1 AMP @ 125 V AC or 28 V DC. See page A-67 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 page A-67 for additional contact materials. CONTACT RESISTANCE: Below 30 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: –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. ACTUATOR: 6/6 nylon (UL 94V-2), natural. Internal o-ring seal, available on KM11 & KM33 models. 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. 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 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 SWITCH FUNCTION Pushbutton A SWITCH FUNCTION POS. 1 POS. 2 NO. POLES CONNECTED TERMINALS POS. 1 POS. 2 MODEL NO. SCHEMATIC KM11 OFF MOM. OPEN 2-1 KM33 ON MOM. 2-1 OPEN SPST N.O. SP 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 KM12 models only. .122" DIA. KM11 models only. NOTE: Caps available for plunger options, see page A-68. KM33 models only. 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 RR RIGHT ANGLE KM12 models only. A 1/4-40 THREAD, .225" HIGH Pushbutton A KM11 & KM33 models only. PC MOUNTING PANEL MOUNTING KM11 & KM33 models. KM12 models only. KM11 models only. TERMINATIONS 05 08 .110" QUICK CONNECT 02 RIGHT ANGLE, PC THRU-HOLE WC PC THRU-HOLE WIRE LEAD 22 AWG insulated wire. KM12 models only. KM11 models only. UL style 1015. 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) 1 AMP @ 125 V AC OR 28 V DC (KM33). * 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 E NO SEAL 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 AVAILABLE HARDWARE Pushbutton A Cap, KM33 models Cap, KM11 models .245 DIA. (6,22 ) .187 (4,75) Cap, KM11 models .375 DIA. (9,53 ) .200 DIA. (5,08 ) .120 (3,05) .250 (6,35) .120 (3,05) .155 (3,94) .081 (2,03) PART NO. PART NO. PART NO. 785101000 WHITE 785102000 BLACK 785103000 RED 708901000 WHITE 708902000 BLACK 708903000 RED 752701000 WHITE 752702000 BLACK 752703000 RED Material: Nylon Finish: Gloss Material: Nylon Finish: Gloss Material: Nylon Finish: Gloss Cap, KM11 models Cap, KM11 models .450 SQ. (11,43) .310 DIA. (7,87 ) .195 (4,95) .138 (3,51) .250 (6,35) .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 PART NO. 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