rheostats (potentiometers) wirewound dimensions for reference only; consult factory for details. since all rheostats/potentiometers are electro-mechanical devices, they are subject to mechanical wear and, therefore, have a finite life. models h, j, k, l and n are listed under ul reexamination service file no. e-10946 and csa file no. 21309 unless noted otherwise. all rheostats are 10% tolerance. d 0.25" 6.35 mm enc losed unenc losed standar d shaft 0.125" 3.18 mm 0.625" 15.88 mm b 0.25" 6.35 mm 0.078" 1.98 mm c 0.531" 13.49 mm 0.406" 10.32 mm shaft loc king nu t 0.094" 2.38 mm b d loc king shaft 0.375" 9.53 mm d m m 0.25 - 20 thread fo r mounting scre ws 0.031" 0.79 mm 2" 51 mm b 1.563" 39.7 mm c holes fo r no . 8 scre ws ohmic max. voltage behind panel diameter dimension rotation model type watts range core (rms)* b (in./ mm ) d (in./mm ) c (in./mm ) shaft torque (5) e res/rel 12.5 1.0-15k open 305 0.688/ 17.46 0.875/ 22.23 0.594/15.08 1-6 oz. in. 300 h rhs/rhl 25 1.0-25k open 500 1.375/ 34.93 1.560/ 39.62 0.940/23.88 0.25-0.5 lb. in. 300 j rjs 50 0.5-50k open 750 1.375/ 34.93 2.31 / 58.67 1.56 /39.62 0.25-2 lb. in. 300 g rgs 75 0.5-50k open 900 1.750/ 44.45 2.75 / 69.25 1.78 /45.21 0.5-2 lb. in. 300 k rks 100 0.5-50k open 1000 1.750/ 44.45 3.125/ 79.38 1.91 /48.51 0.5-2 lb. in. 300 l rls 150 0.5-50k open 1200 2.000 / 50.8 4.00 /101.60 2.28 /57.91 0.5-3 lb. in. 300 p rps 225 1.0-30k open 1300 2.125/ 53.98 5.00 /127.00 2.97 /75.44 2.5-4 lb. in. 310 n rns 300 1.0-50k open 1225 2.375/ 60.33 6.00 /152.40 3.44 /87.38 2.5-5 lb. in. 320 r rrs 500 1.0-20k open 1450 2.125/ 53.98 8.00 /203.20 4.31/109.47 4.5-7 lb. in. 325 u rus 1000 1.0-20k open 1600 3.000 / 76.2 12.00 /304.80 6.38/162.05 3.5-7 lb. in. 335 c rcs/rcl 7.5 10.0-5k enclosed 305 0.875/22.23 0.515/ 13.08 0.25-3 oz. in. 300 e ree 12.5 1.0-15k enclosed 305 1.219/30.96 1.047/ 26.59 1-6 oz. in. 300 ? models h, j, g, and k also available in enclosed versions. ? see catalog #203 for complete details. model e models p, n, r, u models h, j, g, k, l dimension m p 0.875 22.23 mm n 1.188 30.16 mm r 1.5 38.1 mm u 3 76.2 mm d 0.25" 6.4 mm 0.125" 3.18 mm 0.625" 15.88 mm 0.625" 15.88 mm b 0.25" 6.4 mm 0.109" 2.78 mm 0.531" 13.49 mm 0.25" 6.4 mm standar d shaft loc king shaft mounting: panels to 0.125 (3.18mm) thick with 0.25-32 bushing and hex nut (0.063 thick). mounting: panels to 0.125 (3.18mm) thick with 0.25-32 bushing and hex nut (0.063 thick). mounting: panels to 0.25 (6.35mm) thick with 0.375-32 bushing and hex nut (0.094 thick) (or with 10-32 x 0.75 f.h. screws for model l only). mounting: panels to 1.25 (31.75mm) thick with 0.25-20 flat-head screws. 0.5" 12.7 mm holes fo r: no . 2 scre ws (model h) no . 8 scre ws (j , g, k, l) mounting bra cket on model l only 1.75" 44.5 mm d dr ill 0.188" (4.76 mm) hole in panel 0.25" 6.35 mm 0.031" 0.79 mm 0.344" 8.73 mm 0.031" 0.79 mm 0.063" 1.59 mm 0.375" 9.53 mm 0.875" 22.23 mm b c 0.75" 19.05 mm b ushing projection 0.625" 15.88 mm shaft loc king nu t standar d shaft (models h, j, g, k, l) loc king shaft (only model h stocked) see page 93 for knobs, dials, and other hardware model c ordering information series rheostats wirewound potentiometers resistance v alue* example: r50 = 0.50? 1r0 =1 ? 7r5 = 7.5? 250 = 250? 1k0 = 1,000? 1k75 = 1,750? 4k5 = 4,500? 50k = 50,000? rcsr50e code w atts model shaft core cl = 7.5 c locking enclosed cs = 7.5 c standard enclosed ee = 12.5 e standard enclosed el = 12.5 e locking open es = 12.5 e standard open gs =7 5g standard open hl =2 5h locking open hs =2 5h standard open js =5 0j standard open ks = 100 k standard open ls = 150 l standard open ns = 300 n standard open ps = 225 p standard open rs = 500 r standard open us = 1000 u standard open *chec k ta b le fo r standard resistance v alues and maximum current v alues e = rohs compliant ? rohs compliant product available. add e suffix to part number to specify. ? made-to-order rheostats available: contact nearest ohmite sales office. * voltage rating dependent on resistance value.
s tandard p art numbers for rh eostats 0.5 CCCr50 10.0 12.3 14.1 17.3 1 CCC1r0 3.53 5.00 7.07 8.66 10 12.3 15.0 17.32 22.3 31.6 1.5 CCC1r5 18.2 25.8 2 CCC2r0 2.50 3.54 5.00 6.12 7.07 8.65 10.6 12.24 15.8 22.4 2.5 CCC2r5 2.24 14.1 20.0 3 CCC3r0 2.04 2.88 5.00 5.75 7.07 8.66 10.00 12.9 18.3 4 CCC4r0 3.53 7.50 8.66 11.2 15.8 5 CCC5r0 1.58 3.88 4.47 5.48 6.71 7.75 10.0 14.1 6 CCC6r0 1.44 2.04 2.88 7.5 CCC7r5 3.16 3.65 4.47 5.49 6.32 8 CCC8r0 1.25 1.77 2.50 7.90 11.2 10 CCC10r 0.86 1.12 1.58 2.74 3.16 3.88 4.74 5.48 10.0 12 CCC12r 2.04 12.5 CCC12r5 6.30 8.95 15 CCC15r 0.71 0.91 1.29 3.163 3.87 4.47 16 CCC16r 1.76 2.17 2.50 5.60 7.90 22 CCC22r 1.50 25 CCC25r 0.55 0.71 1.00 1.73 2.0 2.450 3.00 3.46 4.47 6.33 35 CCC35r 0.46 0.60 0.845 1.19 2.070 40 CCC40r 3.54 50 CCC50r 0.39 0.50 0.707 1.00 1.23 1.41 1.735 2.12 2.45 3.16 4.47 75 CCC75r 0.32 0.40 0.575 1.00 1.15 1.415 1.73 2.00 3.65 80 CCC80r 0.790 2.52 100 CCC100 0.27 0.36 0.500 0.866 1.00 1.225 1.50 1.73 3.16 125 CCC125 0.32 0.445 0.630 2.00 150 CCC150 0.22 0.29 0.575 1.000 1.22 1.41 160 CCC160 175 CCC175 0.27 0.375 1.69 2.39 200 CCC200 0.19 0.25 0.612 0.707 0.865 1.06 1.22 225 CCC225 0.470 2.11 250 CCC250 0.17 0.22 0.316 0.775 1.41 300 CCC300 0.408 0.500 0.575 0.866 1.00 1.83 325 CCC325 1.24 350 CCC350 0.15 0.19 0.267 0.655 400 CCC400 0.433 0.500 0.750 0.866 1.48 500 CCC500 0.12 0.16 0.222 0.316 0.388 0.447 0.548 1.00 1.41 600 CCC600 700 CCC700 0.567 0.655 750 CCC750 0.10 0.13 0.182 0.316 0.365 0.447 0.817 1.15 800 CCC800 0.250 900 CCC900 0.500 0.578 1000 CCC1k0 0.086 0.10 0.155 0.224 0.274 0.316 0.707 1.00 1200 CCC1k2 0.433 0.500 1250 CCC1k25 0.346 1500 CCC1k5 0.071 0.090 0.129 0.224 0.258 0.387 0.447 0.577 0.816 1600 CCC1k6 0.176 1750 CCC1k75 0.358 0.414 1800 CCC1k8 0.288 2000 CCC2k0 0.194 0.224 0.336 0.387 0.500 2250 CCC2k25 0.259 2500 CCC2k5 0.055 0.070 0.100 0.141 0.173 0.200 0.300 0.346 0.447 0.633 3000 CCC3k0 0.224 3500 CCC3k5 0.046 0.060 0.084 0.119 4500 CCC4k5 0.182 5000 CCC5k0 0.039 0.050 0.070 0.100 0.123 0.141 7500 CCC7k5 0.041 0.058 0.100 0.115 0.141 8000 CCC8k0 0.079 10000 CCC10k 0.035 0.050 0.070 0.087 0.100 0.122 12500 CCC12k5 0.031 15000 CCC15k 0.029 0.041 0.058 20000 CCC20k 0.035 0.050 25000 CCC25k 0.032 0.045 30000 CCC30k 0.041 40000 CCC40k 0.035 50000 CCC50k 0.032 ohmic value rcsCCC std. shaft 7.5w model c part no. *iv rclCCC locking amps max. relCCC locking 12.5w model e reeCCC enclosed amps max. resCCC std. shaft rhsCCC std. shaft 25w model h rhlCCC locking amps max. rjsCCC amps max. rgsCCC amps max. rksCCC amps max. rlsCCC amps max. rpsCCC amps max. rnsCCC amps max. rrsCCC amps max. rusCCC amps max. 50w model j 75w model g 100w model k 150w model l 225w model p 300w model n 500w model r 1000w model u www.ohmite.com
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