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Angstrohm & Ohmite
Ring-Type Rheostats

Click here for High Power Ring-Type Rheostats
Click here for Technical Specifications for Ring Type Rheostats
Click here for Reliance Replacements
Click here for Ohmite Solid State Power Controls

Resistance
Values
(OHMS)
MP10/RHS (25W) MP15/RJS (50W) MP25/RKS (100W) MP30/RLS (150W)
Max.
Amp.
List
Price
Max.
Amp.
List
Price
Max.
Amp.
List
Price
Max.
Amp.
List
Price
0.5 --- CALL 10.00 $50.00 --- --- --- CALL
1 5.00 CALL 7.07 50.00 10.000 $80.00 12.25 CALL
2 3.54 CALL 5.00 50.00 7.071 80.00 --- CALL
3 2.89 CALL ---

---

--- --- --- CALL
4 --- CALL 3.54 50.00 --- --- --- CALL
5 --- CALL ---

---

4.472 80.00 --- CALL
6 2.04 CALL 2.89 50.00 --- 80.00 --- CALL
7.5 --- CALL ---

---

3.652 80.00 --- CALL
8 1.77 CALL 2.50 50.00 ---

---

--- CALL
10 1.58 CALL ---

---

3.162 80.00 --- CALL
12 --- CALL 2.04 50.00 ---

---

--- CALL
15 1.29 CALL ---

---

2.582 80.00 --- CALL
16 --- CALL 1.76 50.00 ---

---

--- CALL
22 --- CALL 1.50 50.00 ---

---

--- CALL
25 1.00 CALL ---

---

2.000 80.00 --- CALL
35 0.85 CALL 1.19 50.00 ---

---

--- CALL
50 0.71 CALL 1.00 50.00 1.414 80.00 --- CALL
75 0.58 CALL --- --- 1.155 80.00 --- CALL
80 --- CALL 0.79 50.00 ---

---

--- CALL
100 0.50 CALL --- --- 1.000 80.00 1.225 CALL
125 0.45 CALL 0.63 50.00 --- --- --- CALL
150 --- CALL 0.58 50.00 --- --- 1.000 CALL
175 0.38 CALL --- --- --- --- --- CALL
200 --- CALL --- --- 0.707 80.00 --- CALL
225 --- CALL 0.47 50.00 --- --- --- CALL
250 0.32 CALL 0.45 50.00 --- --- --- CALL
300 --- CALL 0.41 50.00 0.577 80.00 --- CALL
350 0.27 CALL ---

---

---

---

--- CALL
500 0.22 CALL 0.37 50.00 0.447 80.00 0.548 CALL
750 0.18 CALL --- --- ---

---

--- CALL
800 --- CALL 0.28 50.00 --- --- --- CALL
1000 0.16 CALL 0.22 50.00 0.316 80.00 --- CALL
1250 --- CALL --- --- --- --- 0.347 CALL
1500 0.13 CALL --- --- --- --- --- CALL
1600 --- CALL 0.18 50.00 --- --- --- CALL
2000 --- CALL --- --- 0.224 80.00 --- CALL
2250 --- CALL --- --- ---

---

0.259 CALL
2500 0.10 CALL 0.14 50.00 0.200 80.00 --- CALL
3500 0.08 CALL 0.12 50.00 ---

---

--- CALL
5000 0.07 CALL 0.10 50.00 0.141 80.00 0.173 CALL
10,000 --- CALL 0.07 50.00 0.100 80.00 0.122 CALL
Tandem-Mounting --- CALL --- 30.00 --- 50.00 --- CALL
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Type MP40 Open Rheostat

Tandem Mounting

Limit On Open MP40

Type RUS 1000 Watts
Type MP40
Open Rheostat
Tandem Mounting Limit On Open
MP40
Type RUS
1000 Watts

Technical Specifications for Ring-Type Rheostats

Type / Model MP10/H MP15/J MP25/K MP30/L MP40/N RUS
Watts Dissipation 25 50 100 150 300 1000
Rotation (5) 300 300 300 300 315 335
Net Weight (lbs.) 0.18 0.33 0.06 1.1 2.63 10
Operating Torque (in.-lb.) 0.5 2 2 3 5 7
Overall Diameter (in.) 1.568 2.31 3.125 4 6 12
Shaft Diameter (in.) 1/4 1/4 1/4 1/4 3/8 3/8
Temperature Rise & Resistance  300C over 40C ambient. Resistance Tolerance 10%
UL & CSA Recognition:   All except MP30 are recognized.

(Angstrohm, 300W, 6" ( Type 300R, 600V) / Ohmite 300 & 1000W (Models N & U)

High Power Ring-Type Rheostats

Catalog
Number
Size Steps Ohms Amperes List-Prices
Open
Rheostat
With Board
Mounting
Enclosure
With Floor
Mounting
Enclosure
Max/Min. Linear
Rating
MP40A5T 6" 75 5 12/5   CALL $ ------ $  ------
RUS-05 12" 122 5 20/10 14.1 CALL ------ ------
RUS-10 12" 114 10 14.3/7 10.0 CALL ------ ------
RUS-16 12" 164 16 11.2/5.5 7.9 CALL ------ ------
MP40A25 6" 135 25 3.4/3.4 3.4 CALL ------ ------
RUS-25 12" 181 25 10/4 6.32 CALL ------ ------
RUS-36 12" 278 36 8/3.5 5.26 CALL ------ ------
MP40A50 6" 268 50 2.45/2.45 2.45 CALL ------ ------
RUS-50 12" 299 50 6.3/3.15 4.47 CALL ------ ------
RUS-64 12" 280 64 5.6/2.8 3.95 CALL ------ ------
MP40A75 6" 312 75 2.0/2.0 2.00 CALL ------ ------
RUS-80 12" 279 80 5.0/2.5 3.53 CALL ------ ------
MP40A100 6" 322 100 1.73/1.73 1.73 CALL ------ ------
MP40A100T 6" 350 100 3.12/1.2 --- CALL ------ ------
RUS-100 12" 299 100 4.5/2.2 3.16 CALL ------ ------
RUS-100X 12" 287 100 6.0/1.66 3.16 CALL ------ ------
MP40A125 6" 300 125 1.55/1.55 1.55 CALL ------ ------
MP40A125T 6" 292 125 3.22/0.92 --- CALL ------ ------
RUS-125 12" 447 125 5.3/1.5 2.82 CALL ------ ------
MP40A150 6" 278 150 1.41/1.41 1.41 CALL ------ ------
MP40A160T 6" 357 160 2.46/0.95 --- CALL ------ ------
RUS-160 12" 468 160 4.7/1.3 2.50 CALL ------ ------
MP40A200 6" 370 200 1.22/1.22 1.22 CALL ------ ------
MP40A200T 6" 306 200 2.2/0.85 --- CALL ------ ------
RUS-200 12" 526 200 4.5/1.1 2.23 CALL ------ ------
MP40A250 6" 378 250 1.13/1.13 1.13 CALL ------ ------
MP40A250T 6" 378 250 2.28/0.65 --- CALL ------ ------
RUS-250 12" 472 250 4.0/1.0 2.00 CALL ------ ------
MP40A300 6" 340 300 1.0/1.0 1.00 CALL ------ ------
MP40A320T 6" 394 320 1.74/0.67 --- CALL ------ ------
RUS-320 12" 403 320 3.3/0.94 1.76 CALL ------ ------
MP40A400 6" 370 400 0.87/0.87 0.87 CALL ------ ------
MP40A400T 6" 370 400 1.22/0.67 --- CALL ------ ------
MP40A500 6" 440 500 0.77/0.77 0.77 CALL ------ ------
MP40A500T 6" 425 500 1.87/0.37 --- CALL ------ ------
RUS-500 12" 625 500 3.15/0.63 1.41 CALL ------ ------
MP40A640 6" 450 640 0.73/0.73 0.73 CALL ------ ------
MP40A640T 6" 432 640 1.65/0.33 --- CALL ------ ------
MP40A750 6" 530 750 0.63/0.63 0.63 CALL ------ ------
MP40A800T 6" 600 800 2.57/0.27 --- CALL ------ ------
MP40A1000 6" 570 1,000 0.55/0.55 0.55 CALL ------ ------
RUS-1000 12" 853 1,000 3.0/0.33 1.00 CALL ------ ------
MP40A1250 6" 525 1,250 0.49/0.49 0.49 CALL ------ ------
MP40A1500 6" 675 1,500 0.45/0.45 0.45 CALL ------ ------
MP40A1500T* 6" 675 1,500 0.9/0.16 --- CALL ------ ------
MP40A2500 6" 710 2,500 0.35/0.35 0.35 CALL ------ ------
MP40A5000 6" 870 5,000 0.24/0.24 0.24 CALL ------ ------
MP40A10000 6" 1140 10,000 0.17/0.17 0.17 CALL ------ ------

* Reliance No. 64416A

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Front of Board Floor Mounting  R-1C1 Tandem Floor Floor Mounting With Limits
Front of Board Floor Mounting
R-1C1
Tandem Mounting Floor Mounting
With Limits

Click here for Rheostat dimensions

Description of Modifications Available Catalog No. List Price   Enclosure for
One 12"
RheostatEnclosure for one 12" Rheostat
(Click on photo to see
the enlarged view)
Front of board enclosure for 6" rheostat R-8 CALL
Back of board enclosure (NEMA-12 equivalent) R-8BOB CALL
Floor mounted enclosure for dancer roll service R-1 CALL
Limit switch for above at either end of travel LIMIT 1 CALL
Limit switch for above at both ends of travel LIMIT 2 CALL
Pilot potentiometer (2 watts) mounted in above enclosure PILOT-POT CALL
Tandem mounting of two open rheostats (6" size) MP40B2 CALL
Tandem mounting in floor mounting (6" size-no limits) R-4D CALL
Tandem mounting in floor mounting (6" size-for limits) R-4E CALL
Short out sections of rheostat by soldering surface SOLDER AP CALL
Dial plate and knob (for 3/8" shaft) 99BC CALL   Enclosure for
Two or Three
12" RheostatsEnclosure for two or three 12" Rheostats
(Click on photo to see
the enlarged view)
Dial plate and knob (for 1/4" shaft) 552 CALL
Addition of 3/8" shaft and mounting bracket for 150R 3/8 SHAFT CALL
Limit switch mounted on open rheostat LIMIT O CALL
Motor drive accessory MOTOR DRIVE CALL
Enclosure for one 12" rheostat JE501R CALL
Enclosure for two or three 12" rheostats JE502R CALL
Enclosure for four 12" rheostats JE503R CALL
Tandem mounting of two open rheostats (12" size) RH100B2 CALL
Add keyway in output shaft KEYWAY CALL
Add output shaft to 12" enclosure RH100DR CALL

Reliance Rheostat Replacement
150 Watt 3/8" shaft and two-hole mounting bracket
Type 64495

Replacement for Reliance No. 64495 Rheostats

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H 150 Ohms 1.1 Amperes CALL
A 500 Ohms 0.548 CALL
B 1,250 Ohms 0.347 CALL
C 2,250 Ohms 0.259 CALL
D 5,000 Ohms 0.173 CALL
3M 5,000 Ohms 0.173 Tandem Mounted Pair CALL
E 10,000 Ohms 0.122 CALL
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the enlarged view)

Reliance Rheostat Replacement - 150 Watt 3/8" shaft and two-hole mounting bracket Type 64495

Reliance Rheostat Replacement
150 Watt 3/8" shaft & two-hole
Mounting Bracket

Click here for Rheostat dimensions

These are Angstrohm Model 150R. 4" Diameter Ring Type Rheostats with a 3/8" Diameter shaft extension and a mounting bracket with two 1/4-20 UNC holes on 2-3/8" centers.

Welder & Vibrator Rheostats available:
Lincoln, Miller, Hobart, & FMC Series 52X

Ohmite Solid State Power Controls
AC Input / AC or DC Output

CALLCatalog Number AC Input Volts Maximum Amperes Maximum Watts List Price
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PCA1000 120 803 AC 1000 CALL
PCA1050 120 15.0 AC 1800 CALL
PCA1020 240 8.3 AC 2000 CALL
PCD1000 120 6 DC 700 CALL
SCE12-10 120 10 AC 1200 CALL
SCE24-15 200/240 15 AC 3600 CALL
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Ohmite Solid State Power Controls AC Input - AC or DC Output Ohmite Solid State Power Controls AC Input - AC or DC Output
Ohmite Solid State
Power Controls
Ohmite Solid State
Power Controls

Control heaters, clutches, brakes, and motors. On-Off Switch built in. Minimum load 0.5A. Approx. 3" x 2" x 1-1/8" - Complete with Knob and Dial Plate.

ALL PRICES ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.

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