Rheostats
(Potentiometers) Wirewound
Model C
• See Catalog #203 for complete details.
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°
0.531"
13.49 mm
Locking
shaft
0.25"
6.4 mm
D
B
0.625"
0.625"
15.88 mm 15.88 mm
Mounting:
Panels
to 0.125" (3.18mm)
thick with
1
/
4
-32
bushing and hex
nut (
1
/
16
" thick).
0.125"
3.18 mm
0.25"
6.4 mm
0.25"
6.4 mm
0.109"
2.78 mm
Standard
shaft
Model e
• See Catalog #203 for complete details.
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°
unenclosed
D
0.25"
6.35 mm
0.625"
15.88 mm
0.531"
shaft
13.49 mm
locking
nut
0.125"
3.18 mm
B
Mounting:
Panels to
0.125" (3.18mm) thick
with
1
/
4
-32 bushing and
hex nut (
1
/
16
" thick).
standard
shaft
0.25"
6.35 mm
enclosed
C
0.078"
1.98 mm
0.406"
10.32 mm
D
REL
locking
shaft
0.094"
2.38 mm
Dimensions for reference only; consult factory for details.
B
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
• Models H, J, G, and K also available in enclosed versions.
• See Catalog #203 for complete details.
Ohmic
Model Type
Watts range
H RHS/RHL 25 1.0-25K
J
RJS
50 0.5-50K
G
RGS
75 0.5-50K
K
RKS
100 0.5-50K
L
RLS
150 0.5-50K
Core
open
open
open
open
open
Max.
Voltage Behind panel “B"
(RMS)* (in./mm Ref.)
500
1.375/34.93
750
1.375/34.93
900
1.750/44.45
1000
1.750/44.45
1200
2.000 / 50.8
0.375"
9.53 mm
Diameter “D" Dimension “C"
Shaft
Rotation
(in./mm Ref.) (in./mm Ref.)
torque
(±5°)
1.560/ 39.62 0.940/23.88 0.25-0.5 lb. in. 300°
2.31 / 58.67 1.56 /39.62 0.25-2 lb. in. 300°
2.75 / 69.25 1.78 /45.21 0.5-2 lb. in.
300°
3.125/ 79.38 1.91 /48.51 0.5-2 lb. in.
300°
4.00 /101.60 2.28 /57.91 0.5-3 lb. in.
300°
0.75"
19.05 mm
bushing
projection
0.625"
15.88 mm
1.75"
44.5 mm
D
0.5"
12.7 mm
drill 0.188" (4.76 mm)
hole in panel.
washer not included
in model L
holes for:
no. 2 screws (model H)
no. 8 screws (J, G, K, L) mounting
bracket on
model L only
0.031"
0.79 mm
0.25"
6.35 mm
0.031"
0.79 mm
0.344"
8.73 mm
0.875"
22.23 mm
0.063"
1.59 mm
B
C
shaft
locking
nut
locking shaft
(only model H
stocked)
Mounting:
Panels to
0.25" (6.35mm) thick
with
3
/
8
-32 bushing and
hex nut
(
3
/
32
" thick) (or with 10-32
x 0.75 flat-head screws
for model L only).
standard shaft
(models H, J, G, K, L)
M o d e l s P, N , R , U
• See Catalog #203 for complete details.
Model
P
N
R
U
Type
RPS
RNS
RRS
RUS
Watts
225
300
500
1000
Ohmic
range
1.0-30K
1.0-50K
1.0-20K
1.0-20K
Core
open
open
open
open
Max.
Voltage Behind panel “B"
(RMS)* (in./mm Ref.)
1300
2.125/53.98
1225
2.375/60.33
1450
2.125/53.98
1600
3.000 / 76.2
M
M
Diameter “D"
(in./mm Ref.)
5.00 /127.00
6.00 /152.40
8.00 /203.20
12.00 /304.80
Dimension “C"
(in./mm Ref.)
2.97 /75.44
3.44 /87.38
4.31/109.47
6.38/162.05
Shaft
Rotation
torque
(±5°)
2.5-4 lb. in.
310°
2.5-5 lb. in.
320°
4.5-7 lb. in.
325°
3.5-7 lb. in.
335°
2"
51 mm
B
P
N
R
U
Dimension “M"
0.875" 22.23 mm
1.188" 30.16 mm
1.5"
38.1 mm
3"
76.2 mm
Mounting:
Panels
to 1.25" (31.75mm)
thick with
1
/
4
-20
flat-head screws.
0.375"
9.53 mm
D
0.031"
0.79 mm
C
holes for
no. 8 screws
1
/
4
- 20 thread for
mounting screws
1.563"
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
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 =
75
G Standard
Open
HL =
25
H
Locking
Open
HS =
25
H Standard
Open
JS =
50
J 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
o R d e R i N G i N f o R M at i o N
Resistance Value*
Example:
R50 = 0.50Ω
1R0 = 1Ω
7R5 = 7.5Ω
250 =
250Ω
1K0 = 1,000Ω
1K75 = 1,750Ω
4K5 = 4,500Ω
50K = 50,000Ω
Series
Rheostats
Wirewound
Potentiometers
E = RoHS compliant
RCSR50E
• RoHS compliant product available. Add
“E" suffix to part number to specify.
• Made-to-order rheostats available:
Contact nearest Ohmite sales office.
*Check table for standard resistance
values and maximum current values
* Voltage rating dependent on resistance
value.
7.5W Model C
RCS–––
Std. shaft
RCL–––
Locking
12.5W Model E
RES–––
Std. shaft
REE–––
Enclosed
REL–––
Locking
25W Model H
RHS–––
Std. shaft
RHL–––
Locking
50W
Model J
Amps max.
75W
Model G
Amps max.
100W
Model K
Amps max.
150W
Model L
Amps max.
225W
Model P
Amps max.
300W
Model N
Amps max.
500W
Model R
Amps max.
1000W
Model U
Amps max.
31.6
25.8
22.4
20.0
18.3
15.8
14.1
Ohmic value
Amps max.
Part No.
Prefix
Suffix
–––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
Amps max.
Amps max.
RGS–––
RNS–––
RRS–––
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
3.53
2.50
2.24
2.04
1.58
1.44
0.86
0.71
0.55
0.46
0.39
0.32
0.27
0.22
0.19
0.17
0.15
0.12
0.10
0.086
0.071
1.25
1.12
0.91
0.71
0.60
0.50
0.40
0.36
0.32
0.29
0.27
0.25
0.22
0.19
0.16
0.13
0.10
0.090
5.00
3.54
2.88
2.04
1.77
1.58
1.29
1.00
0.845
0.707
0.575
0.500
0.445
0.375
0.316
0.267
0.222
0.182
0.155
0.129
10.0
7.07
5.00
3.53
2.88
2.50
2.04
1.76
1.50
1.19
1.00
0.790
0.630
0.575
12.3
8.66
6.12
5.00
3.88
3.16
2.74
14.1
10
7.07
5.75
4.47
3.65
3.16
17.3
12.3
8.65
7.07
5.48
4.47
3.88
3.163
2.450
2.070
1.735
1.415
1.225
1.000
15.0
10.6
8.66
7.50
6.71
5.49
4.74
3.87
3.00
2.12
1.73
1.50
1.22
1.06
0.866
0.750
0.567
0.500
17.32
12.24
10.00
8.66
7.75
6.32
5.48
4.47
3.46
2.45
2.00
1.73
1.41
1.22
1.00
0.866
0.655
0.578
0.500
0.447
0.414
0.387
0.346
22.3
18.2
15.8
14.1
12.9
11.2
10.0
7.90
6.30
5.60
4.47
3.54
3.16
2.52
2.00
1.69
1.41
1.24
1.00
0.817
0.707
0.577
11.2
10.0
8.95
7.90
6.33
4.47
3.65
3.16
2.17
1.73
1.23
1.00
0.866
2.50
2.0
1.41
1.15
1.00
0.470
0.408
0.612
0.500
0.433
0.388
0.316
0.274
0.224
0.707
0.575
0.500
0.447
0.365
0.316
0.258
0.865
0.775
0.655
0.548
0.447
2.39
2.11
1.83
1.48
1.41
1.15
1.00
0.816
0.316
0.250
0.224
0.346
0.433
0.387
0.358
0.336
0.300
0.176
0.194
0.055
0.046
0.039
0.070
0.060
0.050
0.041
0.035
0.031
0.029
0.100
0.084
0.070
0.058
0.050
0.041
0.035
0.032
0.141
0.119
0.100
0.079
0.070
0.058
0.050
0.045
0.041
0.035
0.032
0.123
0.100
0.087
0.173
0.224
0.200
0.288
0.259
0.224
0.182
0.141
0.122
0.500
0.447
0.633
0.141
0.115
0.100
= Standard values; check availability
Rheostats are silicone-ceramic coated at and
above the following ohmic values:
Model C: all
Model G: 5000Ω
Model E: 750Ω
Model K: 5000Ω
Model L: 7500Ω
Model H: 2000Ω
Model J: 5000Ω
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
189
RUS–––
RKS–––
RPS–––
RLS–––
RJS–––
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Ohmite
:
RPS150 RUS400 RLS50R RLS3R0 RJS500 RLS2R0 RLS10R RLS15R REE3K5 REE350 RCL3K5 REL3K5
RRS750 RHS750 RKS16R RKS10R RKS75R REE125 RNS200 REE25R RNS2K0 RHL500 RGS1K5 RES1K5
RCL750 RHS20K RES8R0 RHS25K RPS25R RRS2K0 RKS750 RGS200 RNS3R0 RNS4R0 RNS5R0 RNS2R0
RNS1R0 RHS5K0 RHL5K0 RHS1K0 RJS6R0 RHL350 RHL1K0 RJS30K RJS1R0 RCL5K0 RPS900 RCL1K0
RES350 RCS1K5 RES3R0 RPS50R RES15K RPS100 RHL750 RGS7R5 RGS750 RNS400 RCS250 RHS175
RES12K5 REL2R5 REL200 REL25R RUS100 RJS40K RRS12R5 RUS12R5 RNS700 RCS150 RNS7R5
RCS100 REL350 RKS10K REE200 REE2R5 RCS75R RCS25R RCS50R RCS15R RCS35R RCS10R REL750
RCS500 RHL15K RHL20K RHL25K RRS500 RGS300 RGS100 RKS1K0 RCS1K0 RJS25K RJS20K RCS5K0
RHL10R RHL15R RHL25R RKS5R0 RRS2R5
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