Rheostats

(Potentiometers) Wirewound

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 Reexamination Service File

No. E-10946 and CSA File No. 21309 unless noted otherwise.

All rheostats are 10% tolerance.

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

Max. Voltage

Behind panel

Diameter

Dimension

Rotation

Model

Type

Watts

range

Core

(RMS)*

“B” (In./mm)

“D” (In./mm)

“C” (In./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

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°

• Models H, J, G, and K also available in enclosed versions.

• See Catalog #203 for complete details.

Model E

Models P, N, R, U

Models H, J, G, K, L

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

1.75"

44.5 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 93 for

knobs, dials, and

other hardware

Model C

ORDERING INFORMA TION

Series

Rheostats

Wirewound

Potentiometers

Resistance Value*

Example:

R50 = 0.50

Ω

1R0 =1

Ω

7R5 = 7.5

Ω

250 =

250

Ω

1K0 = 1,000

Ω

1K75 = 1,750

Ω

4K5 = 4,500

Ω

50K = 50,000

Ω

RCSR50E

Code Watts Model Shaft

Core

CL =

7.5

C

Locking Enclosed

CS =

7.5

C

Standard Enclosed

EE =

12.5

E

Standard Enclosed

EL =

12.5

E

Locking

Open

ES =

12.5

E

Standard

Open

GS =75G

Standard

Open

HL =25H

Locking

Open

HS =25H

Standard

Open

JS =50J

Standard

Open

KS =

100

K

Standard

Open

LS =

150

L

Standard

Open

NS =

300

N

Standard

Open

PS =

225

P

Standard

Open

RS =

500

R

Standard

Open

US = 1000

U

Standard

Open

*Check Table for

Standard

Resistance Values

and Maximum

Current Values

E = RoHS compliant

• RoHS compliant product available. Add “E” suffix to part number to specify.

• Made-to-order rheostats available: Contact nearest Ohmite sales office.

* Voltage rating dependent on resistance value.