286/287 series - squre base time delay relay spdt - 3pdt, 10 amp general specifications (@ 25 c) timing: functions available time range timing adjustment timing repeatability (constant voltage and temperature) reset time maximum input pulse length minimum contacts: contact confguration contact material contact rating 120 / 240vac resistive 28vdc resistive motor 120vac motor 240vac minimum contct load contact resistance, initial coil: coils available nominal coil power input voltage tolorance -ac input voltage tolorance -dc transient protection reverse polarity protection duty dielectric strength: across open contacts between mutally insulated points insulation resistance temperature: operating storage life expectancy: electrical (full load operations) mechanical (no load operations) miscellaneous: mounting position mating socket enclosure weight on-delay, off-delay up to 300 seconds knob 3% 150ms 50ms spdt, dpdt, 3pdt silver alloy 10 amp / 10 amp 10 amp 1/3hp 1/2hp 500mw 100 milliohms max @ 6vdc, 1a ac and dc 2.75va 2w 85% to 110% of nominal 80% to 110% of nominal yes yes continuous 500vrms 1500vrms 1,000 mohms min @ 500vdc -20 to 70c (-4 to 158f) -40 to 85c (-40 to 185f) 100,000 10,000,000 any sk-sqb11-ds clear polycarbonate 5.0oz (142 grams) the 286 on delay and 287 off delay are square base, bladed versions of time delay relays. both ac and dc versions are available. on delays can have up to three poles. the timing circuit is a fully encapsulated precision rc (resistor C capacitor) network typically used in applications where oscillators are not desired. fixed time and externally adjustable versions are available. the package on this series is typically socket mounted. it can also be panel mounted allowing direct connections to terminals with quick-connects or soldering. e13324 www.struthers-dunn.com (843) 664-3303 7/11
4 1 2 5 6 3 9 8 7 a b 4 1 2 5 6 3 9 8 7 a b section 7 286/287 series - squre base time delay relay spdt - 3pdt, 10 amp timer / sensor - time delay & sensor relays 5 - 25 amp 286/287 wire diagram 286xax 286xbx on delay 286xcx external switch 287 model only input input external switch 287 model only ordering code 286 xax c 001 f 120vac s eies 286 - on delay 287 - off delay contact aangement xax (spdt) - (1 form c) xbx (dpdt) - (2 form c) xcx (3pdt) - (3 form c) c - plug-in c1 - bracket cs1 - top stud c2 - side tapped hole cs2 - side stud timing ranges 0.1 - 1.0 seconds - code 001 0.2 - 2.0 seconds - code 002 1.0 - 10 seconds - code 010 3.0 - 30 seconds - code 033 6.0 - 60 seconds - code 060 18 - 180 seconds - code 180 30 - 300 seconds - code 300 adjustment knob - no code fixed - specify fxed time - code f remote adjustment - code r eating voltage ac: 24, 48, 120, 240, (add vac) dc: 12, 24, 48, 115-125 (add vdc) 4 1 2 5 6 3 9 8 7 a b 286xcx 7/12 www.struthers-dunn.com (843) 664-3303 input 287xbx
286/287 series - squre base time delay relay spdt - 3pdt, 10 amp www.struthers-dunn.com (843) 664-3303 7/13 outline dimensions dimensions shown in inches & (millimeters) side stud or tapped hole, adjustable timing plug-in, adjustable timing bracket fixed or remote timing plug-in fixed or remote timing 0.65 (16.5) 2.89 (73.4) 1.40 (35.6) 0.26 (6.7) 1.51 (38.4) 0.65 (16.5) 0.16 (4.2) 0.83 (21.2) 0.43 (11.0) 2.89 (73.4) anti-rotation tab fts 0.177 dia. hole (no. 16 drill) 1.51 (38.4) 6-32 tapped hole or 6-32 stud 1.40 (35.6) 0.26 (6.7) 6-32 stud 1.39 (35.3) 1.48 (37.6) 1.89 (47.9) 0.26 (6.7) 1.39 (35.3) 1.48 (37.6) 2.75 (69.8) 2.48 (63.1) 1.89 (47.9) 0.26 (6.7) 0.17 (4.3) 286 series
1 2 3 4 5 6 7 8 9 a b section 7 timer / sensor - time delay & sensor relays 5 - 25 amp all terminals 0.18 x 0.02 (4.7 x 0.5) 7/14 www.struthers-dunn.com (843) 664-3303 outline dimensions dimensions shown in inches & (millimeters) side tapped hole, fixed or remote timing side stud, fixed or remote timing top stud fixed or remote timing note: bracket & top stud not (3.6) 1.39 (35.3) (37.6) anti-rotation tab fts (no. 16 drill) 0.83 (21.2) (6.7) 0.34 (8.7) 6.-32 stud (3.17) 1.39 (35.3) (37.6) anti-rotation tab fts 0.177 dia. hole (no. 16 drill) 6-32 tapped hole 0.83 (21.2) 0.43 (11.0) (7.14) (3.2) 6-32 stud 0.37 (9.52) (7.1) 1.87 max. (47.6) 1.37 max. (34.9) 0.43 (11.1) 1.50 max. (38.1) 1.89 (47.9) 287 series
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