website: www.ohmite.com e-mail: ohmite@wwa.com tel. 847/675-2600 fax 847/675-1505 ohmite manufacturing company 3601 howard st. skokie, illinois 60076 44 rheostats (potentiometers) wirewound since all rheostats/potentiometers are electro- mechanical devices, they are subject to mechanical wear and, therefore, have a finite life. d 0.25" 6.35 mm enclosed unenclosed standard 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 locking nut 0.094" 2.38 mm b d locking shaft 0.375" 9.53 mm d m m 0.25 - 20 thread for mounting screws 0.031" 0.79 mm 2" 51 mm b 1.563" 39.7 mm c holes for no. 8 screws ohmic ohmic ohmic ohmic ohmic voltage voltage voltage voltage voltage behind panel behind panel behind panel behind panel behind panel diameter diameter diameter diameter diameter dimension dimension dimension dimension dimension rotation rotation rotation rotation rotation type type type type type watts watts watts watts watts range range range range range core core core core core (rms) (rms) (rms) (rms) (rms) "b" (in./ "b" (in./ "b" (in./ "b" (in./ "b" (in./ mm mm mm mm mm ) ) ) ) ) "d" (in./ "d" (in./ "d" (in./ "d" (in./ "d" (in./ mm mm mm mm mm ) ) ) ) ) "c" (in./ "c" (in./ "c" (in./ "c" (in./ "c" (in./ mm mm mm mm mm ) ) ) ) ) shaft torque shaft torque shaft torque shaft torque shaft torque (5) (5) (5) (5) (5) e e e e 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 h h h 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 j j j 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 g g g 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 k k k 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 l l l 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 p p p 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 n n n 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 r r r 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 u u u 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 c c c 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 e e e e ree 12.5 1.0-15k enclosed 305 1.219/ 30.96 1.047/ 26.59 1-6 oz. in. 300 model model model model model model e models p, n, r, u models h, j, g, k, l model c 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 standard shaft locking 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 for: no. 2 screws (model h) no. 8 screws (j, g, k, l) mounting bracket on model l only 0.875" 22.23 mm d drill 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 bushing projection 0.625" 15.88 mm shaft locking nut standard shaft (models h, j, g, k, l) locking shaft (only model h stocked) see page 39 for knobs, dials, and other hardware made-to-order rheostats available: contact nearest ohmite sales office. ? models h, j, g, and k also available in enclosed versions. ? see catalog #203 for complete details.
45 tel. 847/675-2600 fax 847/675-1505 ohmite manufacturing company 3601 howard st. skokie, illinois 60076 website: www.ohmite.com e-mail: ohmite@wwa.com 0.5 CCCr50 4 10.0 < 12.3 4 14.1 9 17.3 1 CCC1r0 9 4< 3.53 4< 5.00 4 7.07 < 8.66 9 10 9 12.3 < 15.0 9 17.32 9 22.3 9 31.6 1.5 CCC1r5 < 18.2 < 25.8 2 CCC2r0 44< 2.50 4< 3.54 4 5.00 4 6.12 4 7.07 4 8.65 4 10.6 < 12.24 9 15.8 4 22.4 2.5 CCC2r5 <<< 2.24 < 14.1 < 20.0 3 CCC3r0 <<4 2.04 9 < 2.88 < 5.00 < 5.75 < 7.07 < 8.66 4 10.00 4 12.9 < 18.3 4 CCC4r0 4 3.53 < 7.50 < 8.66 < 11.2 4 15.8 5 CCC5r0 <4< 1.58 4 3.88 4 4.47 9 5.48 4 6.71 4 7.75 9 10.0 9 14.1 6 CCC6r0 <<< 1.44 9 4 2.04 9 2.88 7.5 CCC7r5 4 3.16 9 3.65 < 4.47 < 5.49 < 6.32 8 CCC8r0 9 << 1.25 4< 1.77 4 2.50 4 7.90 < 11.2 10 CCC10r 4 9 0.86 44< 1.12 9 < 1.58 < 2.74 9 3.16 9 3.88 4 4.74 4 5.48 9 10.0 12 CCC12r 4 2.04 12.5 CCC12r5 9 6.30 < 8.95 15 CCC15r <4 0.71 <4< 0.91 9 4 1.29 9 3.163 9 3.87 9 4.47 16 CCC16r 4 1.76 < 2.17 4 2.50 4 5.60 4 7.90 22 CCC22r 4 1.50 25 CCC25r 4< 0.55 9 44 0.71 9 < 1.00 < 1.73 < 2.0 4 2.450 9 3.00 9 3.46 9 4.47 9 6.33 35 CCC35r << 0.46 4 9 < 0.60 9 < 0.845 9 1.19 4 2.070 40 CCC40r < 3.54 50 CCC50r <4 0.39 4 9 < 0.50 9 < 0.707 9 1.00 < 1.23 9 1.41 4 1.735 4 2.12 9 2.45 4 3.16 9 4.47 75 CCC75r 44 0.32 99 < 0.40 9 < 0.575 4 1.00 4 1.15 4 1.415 4 1.73 4 2.00 < 3.65 80 CCC80r 4 0.790 4 2.52 100 CCC100 9 4 0.27 9 << 0.36 9 4 0.500 < 0.866 9 1.00 4 1.225 4 1.50 9 1.73 9 3.16 125 CCC125 4< < 0.32 4< 0.445 9 0.630 9 2.00 150 CCC150 << 0.22 <<< 0.29 9 0.575 4 1.000 4 1.22 4 1.41 160 CCC160 175 CCC175 4< < 0.27 44 0.375 4 1.69 < 2.39 200 CCC200 << 0.19 < 9 4 0.25 < 0.612 4 0.707 4 0.865 9 1.06 9 1.22 225 CCC225 9 0.470 < 2.11 250 CCC250 4< 0.17 99 < 0.22 9 < 0.316 4 0.775 4 1.41 300 CCC300 4 0.408 4 0.500 4 0.575 9 0.866 9 1.00 4 1.83 325 CCC325 4 1.24 350 CCC350 << 0.15 4 9 < 0.19 44 0.267 4 0.655 400 CCC400 < 0.433 4 0.500 4 0.750 9 0.866 < 1.48 500 CCC500 9 4 0.12 9 <4 0.16 9 4 0.222 9 0.316 < 0.388 4 0.447 9 0.548 4 1.00 9 1.41 600 CCC600 700 CCC700 4 0.567 4 0.655 750 CCC750 << 0.10 <<< 0.13 9 < 0.182 < 0.316 4 0.365 4 0.447 4 0.817 < 1.15 800 CCC800 4 0.250 900 CCC900 < 0.500 < 0.578 1000 CCC1k0 44 0.086 9 4< 0.10 9 < 0.155 9 0.224 < 0.274 4 0.316 4 0.707 4 1.00 1200 CCC1k2 < 0.433 4 0.500 1250 CCC1k25 4 0.346 1500 CCC1k5 << 0.071 44< 0.090 9 4 0.129 < 0.224 4 0.258 < 0.387 9 0.447 4 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 4 0.259 2500 CCC2k5 44 0.055 44< 0.070 9 < 0.100 9 0.141 < 0.173 4 0.200 < 0.300 4 0.346 < 0.447 < 0.633 3000 CCC3k0 < 0.224 3500 CCC3k5 << 0.046 <<4 0.060 9 < 0.084 4 0.119 4500 CCC4k5 4 0.182 5000 CCC5k0 44 0.039 4< < 0.050 99 0.070 4 0.100 4 0.123 4 0.141 7500 CCC7k5 <<4 0.041 4< 0.058 < 0.100 4 0.115 4 0.141 8000 CCC8k0 < 0.079 10000 CCC10k 9 << 0.035 9 < 0.050 9 0.070 < 0.087 4 0.100 4 0.122 12500 CCC12k5 <<< 0.031 15000 CCC15k <<< 0.029 4< 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 4 0.032 ohmic value ohmic value ohmic value ohmic value ohmic value rcs CCC CCC CCC CCC CCC std. shaft std. shaft std. shaft std. shaft std. shaft 7.5w model c 7.5w model c 7.5w model c 7.5w model c 7.5w model c part no. part no. part no. part no. part no. prefix suffix stock part numbers for standard resistance values rcl CCC CCC CCC CCC CCC locking locking locking locking locking amps max. amps max. amps max. amps max. amps max. rel CCC CCC CCC CCC CCC locking locking locking locking locking 12.5w model e 12.5w model e 12.5w model e 12.5w model e 12.5w model e ree CCC CCC CCC CCC CCC enclosed enclosed enclosed enclosed enclosed amps max. amps max. amps max. amps max. amps max. res CCC CCC CCC CCC CCC std. shaft std. shaft std. shaft std. shaft std. shaft rhs CCC CCC CCC CCC CCC std. shaft std. shaft std. shaft std. shaft std. shaft 25w model h 25w model h 25w model h 25w model h 25w model h rhl CCC CCC CCC CCC CCC locking locking locking locking locking amps max. amps max. amps max. amps max. amps max. rjs CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. rgs CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. rks CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. rls CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. rps CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. rns CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. rrs CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. rus CCC CCC CCC CCC CCC amps max. amps max. amps max. amps max. amps max. 50w 50w 50w 50w 50w model j model j model j model j model j 75w 75w 75w 75w 75w model g model g model g model g model g 100w 100w 100w 100w 100w model k model k model k model k model k 150w 150w 150w 150w 150w model l model l model l model l model l 225w 225w 225w 225w 225w model p model p model p model p model p 300w 300w 300w 300w 300w model n model n model n model n model n 500w 500w 500w 500w 500w model r model r model r model r model r 1000w 1000w 1000w 1000w 1000w model u model u model u model u model u 9 = most popular stock values 4 = stock values < = non-stock values subject to minimum handling charge per item rheostats are silicone-ceramic coated at and above the following ohmic values: model c: all model g: 5000 w model e: 3500 w model k: 7500 w model h: 7500 w model l: 7500 w model j: 15,000 w
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