MP30A7.5 [VISHAY]
Analog Circuit;
VISHAY 
MP30
Vishay Angstrohm
Power Rheostats
150 Watt
FEATURES
• Diameter 4" [101.60mm]
• Depth behind panel 1 3/4" [44.45mm]
• Shaft 1/4" [6.35mm] diameter
• Rotation 300° ± 5° and weight 1.014 pounds (460 grams)
• Total ohms available in higher ranges up to 25,000 ohms
• Mounts on panels up to 1/4" [6.35mm] by means of a 3/8" [9.52mm], 32 bushing
and hex nut
• Non-turn lugs require 3/16" [4.76mm] hole, 1/2" [12.70mm] below center of shaft -
Model"A" shaft
• U. L. Approved
DIMENSIONS in inches [millimeters]
RESISTANCE VALUES*
TOTAL
OHMS
MAXIMUM APPROXIMATE
7/8
[22.22]
1 3/4
[44.45]
AMPS
STEPS
Knob # 552
1/2
[12.70]
0.5
1.0
17.350
35
4
12.247
8.660
7.071
5.477
4.472
3.873
3.162
2.449
1.732
1.414
1.225
0.866
0.707
0.612
0.548
0.447
0.387
0.274
0.244
0.173
0.141
0.122
39
39
3/8
[9.52]
[101.60]
Dia.
2.0
1/16
3.0
70
[1.59]
1 1/2
[38.10]
5.0
73
3/4
[19.05]
7.5
70
10.0
70
2 7/16
[61.91]
1/4 [6.35]
15.0
120
152
190
228
228
265
303
342
342
418
432
575
456
865
1000
1000
3/8
[9.52]
Dial # 548
7/32
[5.56]
25.0
3/32
[2.38]
2 1/2
[63.50] R
50.0
(3) .169 [4.29] Holes
75.0
2 1/4 [57.15]
100.0
200.0
300.0
400.0
500.0
750.0
1000.0
2000.0
2500.0
5000.0
7500.0
10000.0
DERATING
Angstrohm rheostat standard
120
wattage ratings are based on a
300°C rise in “free-air” in ambient
not exceeding + 40°C (shown). For
other applications, wattage ratings
are available based on 340°C rise in
"free-air" in ambient not exceeding
+ 25°C, and in other cases + 50°C.
100
80
60
40
20
0
40
100
150
200
250
300
350
AMBIENT TEMP. DEG. CENTIGRADE
* All other intermediate resistance values are available
and can be manufactured on a normal delivery cycle.
MARKING
ORDERING INFORMATION
MP30
A
25
— Resistance value
— Amps
MODEL
BUSHING AND SHAFT CONFIGURATION
VALUE
A = Standard Flatted Shaft
— Date code
NOTE: For Additional Features: Submit detailed drawing information when ordering “non-standard” parts.
Document Number: 66105
Revision 25-Aug-00
www.vishay.com
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