Rheostats (Potentiometers) Wirewound Model C Max. Ohmic Voltage Behind panel “B" Diameter “D" Dimension “C" Shaft Rotation Model Type Watts range Core (RMS)* (in./mm Ref.) (in./mm Ref.) (in./mm Ref.) torque (±5°) C RCS/RCL 7.5 10.0-5K enclosed 305 0.875/22.23 0.515/ 13.08 — 0.25-3 oz. in. 300° • See Catalog #203 for complete details. 0.531" 13.49 mm Locking shaft Mounting: Panels 0.25" to 0.125" (3.18mm) 6.4 mm thick with 1/4-32 B bushing and hex 0.625" 0.625" nut (1/16" thick). D 15.88 mm15.88 mm 0.125" 3.18 mm Standard shaft 0.25" 0.25" 0.109" 6.4 mm 6.4 mm 2.78 mm Model e Max. Ohmic Voltage Behind panel “B" Diameter “D" Dimension “C" Shaft Rotation Model Type Watts range Core (RMS)* (in./mm Ref.) (in./mm Ref.) (in./mm Ref.) 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° E REE 12.5 1.0-15K enclosed 305 1.219/30.96 1.047/ 26.59 — 1-6 oz. in. 300° • See Catalog #203 for complete details. unenclosed 0.625" 0.531" shaft 15.88 mm 13.49 mm locking D 0.125" B nut 3.18 mm 0.25" 6.35 mm C standard REL shaft locking shaft 0.25" 0.078" Mounting: Panels to 6.35 mm 1.98 mm 0.406" 10.32 mm 0.125" (3.18mm) thick with 1/4-32 bushing and enclosed hex nut (1/16" thick). D 0.094" 2.38 mm B 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 File No. E-10946 and CSA File No. 21309 unless noted otherwise. All rheostats are 10% tolerance. 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 187

Rheostats (Potentiometers) Wirewound Models H, J, G, K, l Max. Ohmic Voltage Behind panel “B" Diameter “D" Dimension “C" Shaft Rotation Model Type Watts range Core (RMS)* (in./mm Ref.) (in./mm Ref.) (in./mm Ref.) torque (±5°) 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° • Models H, J, G, and K also available in enclosed versions. • See Catalog #203 for complete details. 0.375" 0.75" 1.75" 9.53 mm 19.05 mm 44.5 mm 0.031" bushing 0.79 mm projection 0.25" 0.625" 6.35 mm 15.88 mm Mounting: Panels to D 0.25" (6.35mm) thick 0.5" with 3/8-32 bushing and 12.7 mm hex nut drill h0o.1le8 8in" (p4a.n7e6l .m m) 0.709.0 m31m" C shaft (3x/3 20". 7t5h icflka)t -(hoer awdi tshc 1re0w-3s2 washer not included 0.344" locking for model L only). in model L 8.73 mm nut 0.063" holes for: 1.59 mm locking shaft no. 2 screws (model H) 22.203.8 m75m" B (only model H no. 8 screws (J, G, K, L) mounting stocked) bracket on standard shaft model L only (models H, J, G, K, L) Models P, N, R, U Max. Ohmic Voltage Behind panel “B" Diameter “D" Dimension “C" Shaft Rotation Model Type Watts range Core (RMS)* (in./mm Ref.) (in./mm Ref.) (in./mm Ref.) torque (±5°) 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° • See Catalog #203 for complete details. 2" M M 51 mm B Dimension “M" P 0.875" 22.23 mm 0.375" N 1.188" 30.16 mm 9.53 mm R 1.5" 38.1 mm U 3" 76.2 mm D Mounting: Panels 0.031" to 1.25" (31.75mm) 0.79 mm C thick with 1/4-20 flat-head screws. holes for 1/4 - 20 thread for 1.563" no. 8 screws mounting screws 39.7 mm (continued) 188 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

Rheostats (Potentiometers) Wirewound oRdeRiNG iNfoRMatioN Code Watts Model Shaft Core CL= 7.5 C Locking Enclosed CS= 7.5 C Standard Enclosed E = RoHS compliant Resistance Value* EEEGELSS==== 11172225...555 GEEE SSSLtttoaaacnnnkdddiaanarrgrddd EnOOOcppploeeesnnned SRWehirreeioewssotautnsd R C S R 5 0E ER1Rx5a00mp==le01:.Ω50Ω • R“Eo"H sSu fcfiox mtop lpiaanrtt npuromdbuecrt taov aspilaebcliefy.. Add HL= 25 H Locking Open Potentiometers 7R5 = 7.5Ω • Made-to-order rheostats available: HS= 25 H Standard Open 250 = 250Ω Contact nearest Ohmite sales office. JS= 50 J Standard Open 1K0 = 1,000Ω KLNSSS=== 113050000 NKL SSStttaaannndddaaarrrddd OOOpppeeennn *Check table for standard resistance 41KK755== 41,,570500ΩΩ * vVaolultaeg.e rating dependent on resistance PS= 225 P Standard Open values and maximum current values 50K =50,000Ω RS= 500 R Standard Open US= 1000 U Standard Open 7.5W Model C 12.5W Model E 25W Model H 50W 75W 100W 150W 225W 300W 500W 1000W Ohmic value PPSaruerftff iixxN o. RCS ––– Std. shaft RCL ––– Locking Amps max. RES ––– Std. shaft REL ––– Locking REE ––– Enclosed Amps max. RHS ––– Std. shaft RHL ––– Locking Amps max. RJS M–––odeAmps max.l J MRGS –––odeAmps max.l G RKS M–––odeAmps max.l K RLS M–––odeAmps max.l L RPS –––ModeAmps max.l P RNS M–––odeAmps max.l N RRS M–––odeAmps max.l R MRUS –––odelAmps max. U 0.5 –––R50  10.0  12.3  14.1  17.3 1 –––1R0    3.53   5.00  7.07  8.66  10  12.3  15.0  17.32  22.3  31.6 1.5 –––1R5  18.2  25.8 2 –––2R0    2.50   3.54  5.00  6.12  7.07  8.65  10.6  12.24  15.8  22.4 2.5 –––2R5    2.24  14.1  20.0 3 –––3R0    2.04   2.88  5.00  5.75  7.07  8.66  10.00  12.9  18.3 4 –––4R0  3.53  7.50  8.66  11.2  15.8 5 –––5R0    1.58  3.88  4.47  5.48  6.71  7.75  10.0  14.1 6 –––6R0    1.44   2.04  2.88 7.5 –––7R5  3.16  3.65  4.47  5.49  6.32 8 –––8R0    1.25   1.77  2.50  7.90  11.2 10 –––10R   0.86    1.12   1.58  2.74  3.16  3.88  4.74  5.48  10.0 12 –––12R  2.04 12.5 –––12R5  6.30  8.95 15 –––15R   0.71    0.91   1.29  3.163  3.87  4.47 16 –––16R  1.76  2.17  2.50  5.60  7.90 22 –––22R  1.50 25 –––25R   0.55    0.71   1.00  1.73  2.0  2.450  3.00  3.46  4.47  6.33 35 –––35R   0.46    0.60   0.845  1.19  2.070 40 –––40R  3.54 50 –––50R   0.39    0.50   0.707  1.00  1.23  1.41  1.735  2.12  2.45  3.16  4.47 75 –––75R   0.32    0.40   0.575  1.00  1.15  1.415  1.73  2.00  3.65 80 –––80R  0.790  2.52 100 –––100   0.27    0.36   0.500  0.866  1.00  1.225  1.50  1.73  3.16 125 –––125    0.32   0.445  0.630  2.00 150 –––150   0.22    0.29  0.575  1.000  1.22  1.41 160 –––160 175 –––175    0.27   0.375  1.69  2.39 200 –––200   0.19    0.25  0.612  0.707  0.865  1.06  1.22 225 –––225  0.470  2.11 250 –––250   0.17    0.22   0.316  0.775  1.41 300 –––300  0.408  0.500  0.575  0.866  1.00  1.83 325 –––325  1.24 350 –––350   0.15    0.19   0.267  0.655 400 –––400  0.433  0.500  0.750  0.866  1.48 500 –––500   0.12    0.16   0.222  0.316  0.388  0.447  0.548  1.00  1.41 600 –––600 700 –––700  0.567  0.655 750 –––750   0.10    0.13   0.182  0.316  0.365  0.447  0.817  1.15 800 –––800  0.250 900 –––900  0.500  0.578 1000 –––1K0   0.086    0.10   0.155  0.224  0.274  0.316  0.707  1.00 1200 –––1K2  0.433  0.500 1250 –––1K25  0.346 1500 –––1K5   0.071    0.090   0.129  0.224  0.258  0.387  0.447  0.577  0.816 1600 –––1K6  0.176 1750 –––1K75  0.358  0.414 1800 –––1K8  0.288 2000 –––2K0  0.194  0.224  0.336  0.387  0.500 2250 –––2K25  0.259 2500 –––2K5   0.055    0.070   0.100  0.141  0.173  0.200  0.300  0.346  0.447  0.633 3000 –––3K0  0.224 3500 –––3K5   0.046    0.060   0.084  0.119 45500000 ––––––45KK50   0.039    0.050   0.070  0.100  0.123  0.141  0.182  = Standar d v alues; ch eck availabili ty 7500 –––7K5    0.041   0.058  0.100  0.115  0.141 R he ostats ar e s ilicone-ce ram ic coate d at and 8000 –––8K0  0.079 a bo ve the fo llow ing ohm ic v alues: 10000 –––10K    0.035   0.050  0.070  0.087  0.100  0.122 12500 –––12K5    0.031 M od el C: all M od el G: 500 0Ω 15000 –––15K    0.029   0.041  0.058 M od el E: 75 0Ω M od el K: 500 0Ω 20000 –––20K   0.035  0.050 25000 –––25K   0.032  0.045 M od el H: 20 00Ω M od el L: 750 0Ω 30000 –––30K  0.041 M od el J: 500 0Ω 40000 –––40K  0.035 50000 –––50K  0.032 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 189