MP15
Vishay Angstrohm
Power Rheostats
50 Watt
FEATURES
• Diameter 2 9/32" [57.94mm]
• Depth behind panel 1 3/8" [34.92mm]
• Shaft 1/4" [6.35mm] diameter
• Rotation 300° ± 5°
• Weight 0.321 pounds (145 grams)
• 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. Recongnized, File No. E51076
DIMENSIONS in inches [millimeters]
Knob # 552
RESISTANCE VALUES*
TOTAL MAXIMUM APPROXIMATE
27/32
1 3/8
OHMS
AMPS
STEPS
[21.43]
[34.92]
11/32
[8.73]
0.5
1.0
10.00
7.07
5.00
3.54
2.89
2.50
2.04
1.76
1.50
1.19
1.00
0.79
0.63
0.58
0.47
0.41
0.32
0.25
0.22
0.18
0.14
0.12
0.10
0.08
0.07
24
2 9/32
[57.94]
Dia.
46
2.0
50
44
1/4
[6.35]
4.0
1/2
[12.70]
6.0
74
1 1/2
[38.10]
8.0
85
3/4
[19.05]
12.0
108
108
123
148
113
147
178
173
203
214
290
365
358
367
460
505
565
695
693
1/32
[.794]
Dial # 548
1 17/32
[38.89]
16.0
22.0
3/8 [9.52]
.064 [1.63]
35.0
50.0
.171 [4.34]
Holes for
No. 8 Screws
80.0
BUSHING 3/8 [9.52]. 32 Thread
with a 3/32 [2.38] Thick Hex Nut
125.0
150.0
225.0
300.0
500.0
800.0
1000.0
1600.0
2500.0
3500.0
5000.0
8000.0
10000.0
2 1/4 [57.15]
DERATING
120
Angstrohm rheostat standard
100
80
60
40
20
0
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.
40
100
150
200
250
300
350
* All other intermediate resistance values are available
and can be manufactured on a normal delivery cycle.
AMBIENT TEMP. DEG. CENTIGRADE
SPECIAL SHAFTS in inches [millimeters]
1/2
[12.70]
3/4
[19.05]
5/8
[15.88]
27/32
[21.43]
1/2 [12.70]
11/32 [8.73]
5/8 [15.88]
11/32 [8.73]
TYPE B: 1/2 [12.70], 11/32 [8.73]
Models. Slotted shaft with standard
bushing for 1/8 [3.18] panel.
TYPE C: 3/4 [19.05], 5/8 [15.88]
Models. Locking bushing with
slotted shaft for 1/4 [6.35] panel.
TYPE E: 27/32 [21.43], 11/32 [8.73]
Models. Std. bushing and flatted shaft
w/screwdriver slot for 1/8 [3.18] panel.
TYPE D: 5/8 [15.88], 1/2 [12.70]
Models. Locking bushing with
slotted shaft for 1/8 [3.18] panel.
ORDERING INFORMATION
MARKING
A
MP15
5
— Resistance value
— Amps
BUSHING AND SHAFT CONFIGURATION
MODEL
VALUE
A = Standard Flatted Shaft
— Date code
NOTE: For Additional Features: Submit detailed drawing information when ordering “non-standard” parts.
Document Number: 66103
Revision 25-Aug-00
www.vishay.com
5