cts 212 rotary switch ? hill and valley detent ? balanced double bump detent spring ? excellent feel ? 30?, 60? or 90? indexing ? spring return styles available ? adjustable stop available ? solder lug and printed circuit terminals available ? molded stator prevents solder from flowing into the circuit ? custom switching patterns available ? index or wafers are available separately series 212 technical data sheet 1448c cts corporation / manufacturer of reliable electronic components electrical and mechanical specifications indexing double bump spring hill and valley detent with 30 indexing for 2 through 12 positions or 60 indexing from 2 to 6 positions. 90 indexing -consult cts voltage and current rating ul rating: 3 / 4 amp at 125 vac (shorting type only) special rating: 1 / 4 amp at 28 vdc (shorting or non shorting) 1 amp at 28 vdc shorting contact resistance 0.008 to 0.010 ohm when measured from adjacent terminals stop strength 15" lbs (17.3kg-cm). torque up to 48" oz. (3.5kg-cm). detent rotational life standard: 25,000 cycles through 12 positions and return at 10 cycles per minute. materials shaft: aluminum or unplated brass at cts option bushing: standard brass materials (continued) detent spring: spring brass or nickel silver depending on torque requirements front plate: zinc plated or nickel steel at cts option rotor contacts, stator contacts and terminals: silver plated brass standard stator insulator: glass reinforced thermoset material bushing lengths standard: 3 / 8 "-32 unef-2a thread, 1 / 4 " (6.35mm) or 3 / 8 " (9.53mm) long. special lengths: available as required brass locating lugs standard: left side .531" (13.5mm) radius special: right side .531" (13.5mm) radius or no lug shaft trim standard: plain round special: flat, slot, knurl, or mixed (flat with slot) frames machine screw, bolt & nut, or rivet construction lubrication special lubrication is used sufficient for the life of the index assembly under normal hand operation. technical data sheet 4212
detent style 30 index 212 C hill & valley contact type n C non shorting (break before make) s C shorting (make before break) shaft fms 1/32" increments 20 C .625" (15.9mm) 24 C .750" (19.1mm) 28 C .875" (22.2mm) 32 C 1.000" (25.4mm) poles 01 C 1 pole 10 C 10 poles etc. terminal style t C solder lug x Cpc u C pc formed to rear p C x style with .100" (2.54mm) spacing specials n C none a C adjustable stop b C 60? index c C 90? index d C no locating lug e C locating lug right side shaft trim r C round f C flatted .250" x .156" (6.35mm x 4.0mm) k C knurled eia s148 s C sd slot .047" wide x .063" deep (1.2mm x 1.6mm) m C flatted .375 x .218 (9.53mm x5.54mm) with slot positions 02 C 2 positions 12 C 12 positions, etc. mounting style bushing length: 1/8" increments examples: 2 C .250" (6.35mm) 3 C .375" (9.5mm) bushing mount supplied with locating lug left side terminals down order from: cts corporation, electrocomponents / 1601 mishawaka street / elkhart, indiana 46514 north america toll free (888) 287-4690 / (219) 296-6700 / fax: (219) 293-1240 http://www.ctscorp.com cts components taiwan, ltd. / 7, central 6th road (chung liu road) / p.o. box 26-20 kaohsiung export processing zone / kaohsiung, taiwan, rep. of china (07) 8216145 / fax: (07) 8417642.8110040 2.5m-6-99 i ordering information physical dimensions 212 t 01 02 n 2 20 r n dimension: mm inch dimension: mm inch available terminal styles detent only typical assembled switch t-style p-style x-style u-style
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