pushbutton switches grayhill, inc. ? 561 hillgrove avenue ? lagrange, illinois 60525-5997 ? usa ? phone: 708-354-1040 ? fax: 708-354-2820 ? www.gr ayhill.com butt contact pushbutton switches spdtCpc mount large button style 39-261* dimensions in inches (and millimeters) small button style 39-251* rating at 115 vac resistive rating at 220 vac resistive operations at rated load partial part number 39-251* 39-261* .090 + .010/ C .015 (2,29 + 0,25/ C 0,38) .200 .015 (5,08 0,38) .060 (1,52) ref. .100 .015 (2,54 0,38) .100 .010 (2,54 0,25) .400 .015 (10,16 0,38) .100 .010 (2,54 0,25) .300 .010 (7,62 0,25) .050 .005 (1,27 0,13) typ. .050 .005 (1,27 0,13) .084 .005 (2,13 0,13) dia. .250 .010 (6,35 0,25) dia. end of button has a .200 (5,08) spherical radius c l c l .340 .015 (8,64 0,38) .090 .010 (2,29 0,25) rating at 28 vdc resistive 150 ma 1 / 4 amp 1 / 8 amp 500,000 action actuating force (oz.) total travel momentary 10 3 oz. .500 .015 (12,7 0,38) .270 (6,86) ref. .125 .010 (3,18 0,25) .030 .002 (0,76 0,05) dia. .250 .015 (6,35 0,38) .060 (1,52) ref. .100 .015 (2,54 0,38) .100 .010 (2,54 0,25) .100 .010 (2,54 0,25) .300 .010 (7,62 0,25) .050 .005 (1,27 0,13) typ. .084 .005 (2,13 0,13) dia. .250 .010 (6,35 0,25) dia. .100 .010 (2,54 0,25) .068 .010 (1,73 0,25) .187 .010 (4,75 0,25) dia. .328 .015 (8,33 0,38) e c l c l .090 .010 (2,29 0,25) .400 .015 (10,16 0,38) .340 .015 (8,64 0,38) .050 .005 (1,27 0,13) .100 .005 (2,54 0,13) n.c. n.o. grayhill xxxx e.i.a. date code specifications rating criteria contact resistance: 25 milliohms maximum on a new switch voltage breakdown: 1,000 vac between mutually insulated parts insulation resistance: 1,000 megohms minimum operating temperature: -40c to +125c materials and finishes button: nylon base and cover: polyester, red in color shorting bar: phosphor bronze, gold-plated over nickel terminals: brass, gold-plated over nickel spring: tinned music wire o-ring: fluorosilicone ordering information *complete part number description 39-251 red small red button, spdt 39-251 blk small black button, spdt 39-261 red large red button, spdt 39-261 blk large black button, spdt available from your local grayhill distributor. for prices and discounts, contact a local sales office, an authorized local distributor or grayhill. circuitry 2 circuits per switch alternate wiring spst n.c. spst n.o. n.o. n.o. n.c. n.c. spdt break before make n.o. n.c. c connect pins on pc board actuator actuator series 39 spst and spdt, 1/4 amp features ? fully protected during flux cleaning operations pushbutton 37
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