![](http://datasheet.mmic.net.cn/10000/01F7554_datasheet_1243965/01F7554_1.png)
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
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
Voltage
Behind panel
Diameter
Dimension
Rotation
Type
Watts
range
Core
(RMS)
"B" (In./
mm
mm)))))
"D" (In./
mm
mm)))))
"C" (In./
mm
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
JJ
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°
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.