MP30 Datasheet, PDF (1/2 Pages) Vishay Siliconix – Power Rheostats 150 Watt

RESISTANCE VALUES*
TOTAL
OHMS
0.5
MAXIMUM
AMPS
17.350
1.0
12.247
2.0
8.660
3.0
7.071
5.0
5.477
7.5
4.472
10.0
3.873
15.0
3.162
25.0
2.449
50.0
1.732
75.0
1.414
100.0 1.225
200.0 0.866
300.0 0.707
400.0 0.612
500.0 0.548
750.0 0.447
1000.0 0.387
2000.0 0.274
2500.0 0.244
5000.0 0.173
7500.0 0.141
10000.0 0.122
APPROXIMATE
STEPS
35
39
39
70
73
70
70
120
152
190
228
228
265
303
342
342
418
432
575
456
865
1000
1000
* All other intermediate resistance values are available
and can be manufactured on a normal delivery cycle.
MARKING
Power Rheostats
150 Watt
MP30
Vishay Angstrohm
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]
4
[101.60]
Dia.
(3) .169 [4.29] Holes
2 7/16
[61.91]
2 1/2
[63.50] R
1 3/4
[44.45]
7/8
[22.22]
1/2
[12.70]
3/8
[9.52]
1/16
[1.59]
Knob # 552
1 1/2
[38.10]
3/4
[19.05]
3/8
[9.52]
3/32
[2.38]
1/4 [6.35]
Dial # 548
7/32
[5.56]
2 1/4 [57.15]
DERATING
Angstrohm rheostat standard
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.
120
100
80
60
40
20
0
40
100 150 200 250 300 350
AMBIENT TEMP. DEG. CENTIGRADE
ORDERING INFORMATION
— Resistance value
— Amps
— Date code
MP30
MODEL
A
BUSHING AND SHAFT CONFIGURATION
A = Standard Flatted Shaft
25
VALUE
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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