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參數資料
| 型號： | MP25A25 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Power Rheostats |
| 中文描述： | 電力變阻器 |
| 文件頁數： | 1/1頁 |
| 文件大小： | 59K |
| 代理商： | MP25A25 |
Document Number: 66104
Revision 25-Aug-00
www.vishay.com
6
MP25
Vishay Angstrohm
FEATURES
Diameter 3 5/32" [80.17mm]
Depth behind panel 1 1/2" [38.10mm]
Shaft 1/4" [6.35mm] diameter
Rotation 300
°
±
5
°
Weight 0.594 pounds (268 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. Listed, File No. E51076
DIMENSIONS
in inches [millimeters]
Power Rheostats
100 Watt
— Resistance value
— Amps
— Date code
MARKING
MP25
MODEL
NOTE:
For Additional Features: Submit detailed drawing information when ordering “non-standard” parts.
A
BUSHING AND SHAFT CONFIGURATION
25
VALUE
ORDERING INFORMATION
MAXIMUM
AMPS
14.140
10.000
7.071
5.774
4.472
3.652
3.162
2.582
2.000
1.414
1.155
1.000
0.707
0.557
0.500
0.447
0.365
0.316
0.224
0.200
0.141
0.115
0.100
TOTAL
OHMS
0.5
1.0
2.0
3.0
5.0
7.5
10.0
15.0
25.0
50.0
75.0
100.0
200.0
300.0
400.0
500.0
750.0
1000.0
2000.0
2500.0
5000.0
7500.0
10000.0
30
30
56
66
56
66
104
113
144
180
180
216
252
252
252
324
396
410
410
410
685
820
820
APPROXIMATE
STEPS
RESISTANCE VALUES*
11/32 [8.73]
5/8 [15.88]
1/2 [12.70]
5/8
[15.88]
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.
11/32 [8.73]
27/32
[21.43]
3/4
[19.05]
1/2
[12.70]
SPECIAL SHAFTS
in inches [millimeters]
* All other intermediate resistance values are available
and can be manufactured on a normal delivery cycle.
TYPE D: 5/8 [15.88], 1/2 [12.70]
Models. Locking bushing with
slotted shaft for 1/8 [3.18] panel.
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.
DERATING
AMBIENT TEMP. DEG. CENTIGRADE
%
40
100
150 200
250
300 350
120
100
80
60
40
20
0
A = Standard Flatted Shaft
7/8
[22.22]
3/32
[2.38]
1 1/2
[38.10]
Dial # 548
2 1/4 [57.15]
Knob # 552
3/4
[19.05]
2 1/64
[51.20]
3 5/32
[80.17]
Dia.
2 1/16
[52.39] R
(3) .162 [4.11] Holes
1 1/2
[38.10]
3/8 [9.52]
1/16
[1.59]
1/4
[6.35]
7/32
[5.56]
1/2
[12.70]
3/8
[9.52]
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