aC7 dimensions are shown: inches (mm) specifications and dimensions subject to change www .ck-components.com a p u s h b u t t o n km series subminiature pushbutton switches f eatures/benefits ? reliable contact design ? available with pretravel and overtravel ? extended overtravel option ? rohs compliant t ypical applications ? alarm systems ? computers ? d etector switch application 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-69 for additional ratings. electrical life: 10,000 actuations min. at full load. contact resistance: below 30 m typ. initial @ 2-4 v dc, 100 ma, for both silver and gold plated contacts. insulation resistance: 10 9 min. dielectric strength: 1,000 vrms min. @ sea level. operating temperature: C0?oto 85?. cap installation force: 10 lbs. max. permissible. note: any models supplied with q or b contact material are rohs compliant. note: specifications and materials listed above are for switches with standard options. f or 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-69 for additional contact materials. stationary contacts & terminals: b contact material: copper, with gold plate over nickel plate. see page a-69 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-68 and a-70. 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 contact material b gold q silver seal none no seal e epoxy bushing/mounting style a right angle rr 1/4-40 thread, .225" high models available terminations 05 .110" quick connect 08 right angle, pc thru-hole 02 pc thru-hole
aC8 dimensions are shown: inches (mm) specifications and dimensions subject to change www .ck-components.com third angle projection km series subminiature pushbutton switches switch function actuator spdt 4 -3 2 -1 m om. o n km12 s p spst n.o. spst n.c. 2-1 open open 2-1 mom. mom. off on km11 km33 sp schematic connected terminals pos. 1 pos. 2 switch function pos. 1 pos. 2 model no. no. poles spdt spst part number shown: km1202a08be part number shown: km1101rr05be 02 .398" high, .122" dia. 01 .122" dia. km12 models only. note: caps available for plunger options, see page a-70. km11 models only. km33 models only. a p u s h b u t t o n
aC9 dimensions are shown: inches (mm) specifications and dimensions subject to change www .ck-components.com third angle projection km series subminiature pushbutton switches bushing/ mounting style terminations cont act ma terial seal panel mounting pc mounting 08 right angle, pc thru-hole a right angle e epoxy seal none no seal 05 .110" quick connect 02 pc thru-hole rr 1/4-40 thread, .225" high km11 & km33 models only. k m12 models only. km12 models only. km12 models only . km11 models only. km11 models only . km11 & km33 models. * 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. mov able 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 st a tionar y cont acts & 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 ?ontact material. a p u s h b u t t o n yes yes yes yes rohs compliant * rohs compatible * ratings c ontact and terminal material option code b q gold 1 silver 2 power low level/dr y 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).
km series subminiature pushbutton switches available hardware .187 (4,75) .081 (2,03) .245 dia. (6,22 ) .200 dia. (5,08 ) .120 (3,05) .155 (3,94) .375 dia. (9,53 ) .120 (3,05) .250 (6,35) .310 dia. (7,87 ) .250 (6,35) .138 (3,51) cap, km33 models part no. 7 85101000 white 7 85102000 black 785103000 red material: nylon finish: gloss cap, km11 models part no. 7 08901000 white 7 08902000 black 708903000 red material: nylon finish: gloss cap, km11 models part no. 7 52701000 white 7 52702000 black 752703000 red material: nylon finish: gloss cap, km11 models p art no. 801801000 white 801802000 black 801803000 red material: nylon finish: gloss cap, km11 models p art no. 484601000 white 484602000 black 484603000 red material: nylon finish: gloss p art no. 798201000 white 798202263 black 798203000 red material: nylon finish: matte note : other cap colors available, consult customer service center. .450 sq. (11,43) .195 (4,95) .240 (6,10) third angle projection dimensions are shown: inches (mm) specifications and dimensions subject to change www .ck-components.com aC0 a p u s h b u t t o n
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