Rheostats
(Potentiometers) Wirewound
Model C
Max.
Ohmic Voltage Behind panel Diameter Dimension 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)
1 6.4 mm
thick with /4-32
B
bushing and hex
0.625" 0.625"
1
nut ( /16" thick).
15.88 mm 15.88 mm
D
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 Diameter Dimension 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
B nut
0.125"
3.18 mm
0.25"
6.35 mm
C
REL
standard
locking
shaft
shaft
0.25" 0.078"
0.406"
6.35 mm 1.98 mm
Mounting: Panels to
10.32 mm
0.125" (3.18mm) thick
1 enclosed
with /4-32 bushing and
1
hex nut ( /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 Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com 187Rheostats
(Potentiometers) Wirewound
Models H, J, G, K, l
Max.
Ohmic Voltage Behind panel Diameter Dimension 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 Mounting: Panels to
15.88 mm
D
0.25" (6.35mm) thick
3
with /8-32 bushing and
0.5"
hex nut
12.7 mm
3
0.031"
( /32" thick) (or with 10-32
C
drill 0.188" (4.76 mm)
0.79 mm
shaft x 0.75 flat-head screws
hole in panel.
locking
for model L only).
washer not included 0.344"
nut
in model L
8.73 mm
0.063"
holes for:
1.59 mm
locking shaft
0.875"
no. 2 screws (model H)
(only model H
22.23 mm B
mounting
no. 8 screws (J, G, K, L)
stocked)
bracket on standard shaft
model L only (models H, J, G, K, L)
Models P, N, R, U
Max.
Ohmic Voltage Behind panel Diameter Dimension 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"
51 mm
M M B
Dimension
P 0.875" 22.23 mm
0.375"
9.53 mm
N 1.188" 30.16 mm
R 1.5" 38.1 mm
D
U 3" 76.2 mm
Mounting: Panels
0.031"
C
to 1.25" (31.75mm)
0.79 mm
1
thick with /4-20
flat-head screws.
1
holes for /4 - 20 thread for 1.563"
no. 8 screws mounting screws 39.7 mm
(continued)
188 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com