Rheostats See page 78 for knobs, dials, and other hardware (Potentiometers) Wirewound unenclosed D Model E 0.625" 15.88 mm 0.531" shaft 13.49 mm locking nut B 0.125" 3.18 mm 0.25" 6.35 mm C standard shaft 0.25" 6.35 mm Mounting: Panels to 0.125" (3.18mm) thick enclosed with 0.25-32 bushing and hex nut (0.063" thick). 0.078" 1.98 mm M 0.406" 10.32 mm 0.25" 6.4 mm B D 0.125" 3.18 mm D Dimension "M" 0.875" 22.23 mm 1.188" 30.16 mm 1.5" 38.1 mm 3" 76.2 mm C Mounting: Panels to 1.25" (31.75mm) thick with 0.25-20 flat-head screws. 0.5" 12.7 mm drill 0.188" (4.76 mm) hole in panel Ohmic range 1.0-15K 1.0-25K 0.5-50K 0.5-50K 0.5-50K 0.5-50K 1.0-30K 1.0-50K 1.0-20K 1.0-20K 10.0-5K 1.0-15K Core open open open open open open open open open open enclosed enclosed 0.031" 0.79 mm 0.25" 6.35 mm 0.375" 9.53 mm 0.031" 0.79 mm 0.75" 19.05 mm bushing projection 0.625" 15.88 mm C 0.344" 8.73 mm 0.063" holes for: 1.59 mm 0.875" no. 2 screws (model H) B 22.23 mm mounting no. 8 screws (J, G, K, L) bracket on standard shaft model L only (models H, J, G, K, L) Since all rheostats/potentiometers are electro-mechanical devices, they are subject to mechanical wear and, therefore, have a finite life. Watts 12.5 25 50 75 100 150 225 300 500 1000 7.5 12.5 D 0.875" 22.23 mm 1.563" 39.7 mm Dimensions for reference only; consult factory for details. Model Type E RES/REL H RHS/RHL J RJS G RGS K RKS L RLS P RPS N RNS R RRS U RUS C RCS/RCL E REE 0.109" 2.78 mm Models H, J, G, K, L 0.031" 0.79 mm 0.25 - 20 thread for mounting screws 0.25" 6.4 mm Standard shaft Mounting: Panels to 0.125" (3.18mm) thick with 0.25-32 bushing and hex nut (0.063" thick). 0.375" 9.53 mm P N R U B 0.625" 0.625" 15.88 mm 15.88 mm 2" 51 mm B M 0.25" 6.4 mm holes for no. 8 screws Locking shaft Model C D 0.094" 2.38 mm Models P, N, R, U 0.531" 13.49 mm locking shaft shaft locking nut locking shaft (only model H stocked) 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). Voltage (RMS) 305 500 750 900 1000 1200 1300 1225 1450 1600 305 305 Behind panel "B" (In./mm) 0.688/17.46 0.688/ 17.46 1.375/34.93 1.375/34.93 1.375/ 34.93 1.750/44.45 1.750/44.45 1.750/ 44.45 2.000 / 50.8 2.125/53.98 2.125/ 53.98 2.375/60.33 2.125/53.98 2.125/ 53.98 3.000 / 76.2 0.875/22.23 0.875/ 22.23 1.219/30.96 Diameter "D" (In./mm) 0.875/ 22.23 1.560/ 39.62 2.31 / 58.67 2.75 / 69.25 3.125/ 79.38 4.00 /101.60 101.60 5.00 /127.00 /127.00 6.00 /152.40 152.40 8.00 /203.20 /203.20 12.00 /304.80 304.80 0.515/ 13.08 1.047/ 26.59 Dimension "C" (In./mm) 0.594/15.08 0.594/ 15.08 0.940/23.88 1.56 /39.62 /39.62 1.78 /45.21 1.91 /48.51 /48.51 2.28 /57.91 2.97 /75.44 /75.44 3.44 /87.38 4.31/109.47 4.31/ 109.47 6.38/162.05 162.05 -- -- Shaft torque 1-6 oz. in. 0.25-0.5 lb. in. 0.25-2 lb. in. 0.5-2 lb. in. 0.5-2 lb. in. 0.5-3 lb. in. 2.5-4 lb. in. 2.5-5 lb. in. 4.5-7 lb. in. 3.5-7 lb. in. 0.25-3 oz. in. 1-6 oz. in. Rotation (5) 300 300 300 300 300 300 310 320 325 335 300 300 * Models H, J, G, and K also available in enclosed versions. * See Catalog #203 for complete details. Made-to-order rheostats available: Contact nearest Ohmite sales office. 74 Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 * Tel. 1-866-9-OHMITE * Fax 1-847-574-7522 * www.ohmite.com * info@ohmite.com S T O C K PA RT N U M B E R S F O R S TA N D A R D R E S I S TA N C E VA L U E S 2.50 2.24 2.04 3.54 5.00 6.12 7.07 8.65 10.6 12.24 5.00 5.75 7.07 3.88 4.47 5.48 8.66 7.50 6.71 10.00 8.66 7.75 3.16 3.65 4.47 5.49 6.32 2.74 3.16 3.88 4.74 5.48 3.163 3.87 4.47 2.88 1.58 1.44 2.04 2.88 1.25 1.12 1.77 1.58 2.50 Amps max. 17.32 RUS--- 15.0 1000W Model U Amps max. 17.3 12.3 RNS--- RPS--- 14.1 10 RKS--- 12.3 8.66 RGS--- 10.0 7.07 RJS--- 5.00 500W Model R RRS--- 300W Model N 3.53 3.53 0.86 225W Model P Amps max. 150W Model L Amps max. 100W Model K Amps max. 75W Model G Amps max. 50W Model J Amps max. Amps max. RHL--- Locking RHS--- Std. shaft Amps max. REE--- Enclosed REL--- Locking RES--- Std. shaft Amps max. RCS--- Std. shaft 25W Model H Amps max. ---R50 ---1R0 ---1R5 ---2R0 ---2R5 ---3R0 ---4R0 ---5R0 ---6R0 ---7R5 ---8R0 ---10R ---12R ---12R5 ---15R ---16R ---22R ---25R ---35R ---40R ---50R ---75R ---80R ---100 ---125 ---150 ---160 ---175 ---200 ---225 ---250 ---300 ---325 ---350 ---400 ---500 ---600 ---700 ---750 ---800 ---900 ---1K0 ---1K2 ---1K25 ---1K5 ---1K6 ---1K75 ---1K8 ---2K0 ---2K25 ---2K5 ---3K0 ---3K5 ---4K5 ---5K0 ---7K5 ---8K0 ---10K ---12K5 ---15K ---20K ---25K ---30K ---40K ---50K 12.5W Model E RLS--- 0.5 1 1.5 2 2.5 3 4 5 6 7.5 8 10 12 12.5 15 16 22 25 35 40 50 75 80 100 125 150 160 175 200 225 250 300 325 350 400 500 600 700 750 800 900 1000 1200 1250 1500 1600 1750 1800 2000 2250 2500 3000 3500 4500 5000 7500 8000 10000 12500 15000 20000 25000 30000 40000 50000 RCL--- Locking Part No. Prefix Suffix Ohmic value 7.5W Model C 22.3 18.2 15.8 14.1 12.9 11.2 10.0 31.6 25.8 22.4 20.0 18.3 15.8 14.1 7.90 11.2 10.0 6.30 8.95 5.60 7.90 4.47 6.33 2.04 0.71 0.91 1.29 1.76 1.50 0.55 0.46 0.71 0.60 1.00 0.845 0.39 0.32 0.50 0.40 0.707 0.575 0.27 0.500 0.445 0.22 0.36 0.32 0.29 0.27 0.25 0.375 0.19 0.17 0.22 0.316 2.17 2.50 1.73 2.0 2.450 2.070 3.00 3.46 1.23 1.00 1.41 1.15 1.735 1.415 2.12 1.73 2.45 2.00 0.866 1.00 1.225 1.50 1.73 1.19 1.00 0.790 3.54 3.16 2.52 0.630 0.575 3.16 2.00 1.000 1.22 1.41 0.865 1.06 1.22 0.775 1.69 0.612 0.707 0.470 0.408 4.47 3.65 2.39 2.11 0.500 0.575 1.41 0.866 1.00 1.83 1.24 0.15 0.19 0.267 0.12 0.16 0.222 0.10 0.13 0.182 0.316 0.655 0.433 0.388 0.500 0.447 0.548 0.316 0.365 0.447 0.274 0.316 0.750 0.567 0.866 1.00 1.48 1.41 0.817 1.15 0.707 1.00 0.577 0.816 0.655 0.250 0.086 0.10 0.155 0.224 0.071 0.090 0.129 0.224 0.500 0.578 0.433 0.500 0.387 0.447 0.358 0.414 0.336 0.387 0.500 0.300 0.346 0.447 0.346 0.258 0.176 0.194 0.055 0.070 0.100 0.141 0.046 0.060 0.084 0.119 0.039 0.050 0.041 0.070 0.058 0.100 0.035 0.031 0.029 0.050 0.041 0.035 0.032 0.079 0.070 0.058 0.050 0.045 0.041 0.035 0.032 0.173 0.288 0.259 0.224 0.224 0.200 0.182 0.123 0.100 0.141 0.115 0.141 0.087 0.100 0.122 0.633 = Most popular stock values = 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 Model E: 3500 Model K: 7500 Model H: 7500 Model L: 7500 Model J: 15,000 Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 * Tel. 1-866-9-OHMITE * Fax 1-847-574-7522 * www.ohmite.com * info@ohmite.com 75