MIL-PRF-39019/1H
14 May 2010
SUPERSEDING
MIL-PRF-39019/1G
27 August 1997
PEROFRMANCE SPECIFICATION SHEET
CIRCUIT BREAKERS, MAGNETIC, LOW-POWER, SEALED, TRIP-FREE
ONE-POLE
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
The requirements for acquiring the product described herein shall consist of
this specific atio n sheet and MIL-PRF-39019.
FIGURE 1. Circuit breaker co nfiguration.
AMSC N/A FSC 5925
INCH-POUND
MIL-PRF-39019/1H
2
FIGURE 1. Circuit breaker co nfiguration - Continued.
MIL-PRF-39019/1H
3
Inches mm Inches mm
.005 0.13 .375 9.52
.030 0.76 .380 9.65
.060 1.52 .493 12.52
.062 1.57 .507 12.88
.063 1.60 .610 15.49
.125 3.18 .625 15.88
.138 3.51 .641 16.28
.240 6.10 .906 23.01
.250 6.35 1.562 39.67
.325 8.26 1.700 43.18
.332 8.43 1.780 45.21
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. Unless otherwise specified, tolerance is ±.031 (0.79 mm).
4. The shape of the circuit breaker is shown for information only. Slight deviations from this outline drawing,
which do not alter the functional aspect of the device, are acceptable.
5. Hex mounting nut .375-32 UNEF-2B thread, .093 ±.005 (2.36 mm ±0.13 mm) thick or equivalent
MS25082-20, -B20.
6. Internal tooth lockwasher, .507/.493 O.D., .392/.382 I.D., .025 ±.005 (0.64 mm ±0.13mm) thick, stainless steel
or equivalent MS35333-134.
7. The effective bushing thread length (not including mounting hardware) is .280 (7.11 mm) minimum.
8. Marking may appear on any surface except the mounting surface.
9. Lock ring not required if on-of f plate has lock ing tab.
10. Numerical marking optional on circuit diagram.
11. For configuration 2 add "S" at end of dash number for screw terminals with insulating block (see table I).
When circuit breakers are subjected to the resistance to solvents test, the insulating block shall be removed
and shall not be tested. Main terminal screw MS35265-26 or equivalent .
FIGURE 1. Circuit breaker co nfiguration - Continued.
MIL-PRF-39019/1H
4
REQUIREMENTS:
Dimensions and configuration: See figure 1 and note 11.
Weight: For reference only, approximately 50 grams.
Mounting hardware: See figure 1.
Terminals: See figure 1.
Voltage and frequency rating: 50 V dc, maximum and 240 V ac, maximum at 60 Hz and 400 Hz.
High inrush: 800 percent at 60 Hz and dc, 1,400 percent at 400 Hz (see table I).
Current rating: See table I.
Circuit diagram: See figure 1.
Time delay: See table I.
Resistance or impedance: See table I.
Part or Identifying Number (PIN): The PIN shall be M39019/01-(dash number taken from table I) (e.g.,
M39019/01-200, M39019/01-200S).
Cross reference: See table II.
TABLE I. Circuit breaker dash numbers and applicable characteristics.
Dash number 1/
Current
rating
(amps)
Time delay
R es ist anc e or impe danc e
(ohms - max) 2/
Standard
delay
High
inrush
DC
60 Hz
400 Hz
200
201
202
203
204
205
300
301
- - -
302
303
- - -
0.05
0.05
0.05
0.1
0.1
0.1
A
B
C
A
B
C
680.0
680.0
680.0
150.0
150.0
150.0
690.0
690.0
690.0
170.0
170.0
170.0
710.0
710.0
710.0
180.0
180.0
180.0
206
207
208
209
210
304
305
- - -
306
307
0.25
0.25
0.25
0.5
0.5
A
B
C
A
B
20.0
20.0
20.0
5.4
5.4
26.0
26.0
26.0
6.0
6.0
27.0
27.0
27.0
6.6
6.6
211
212
213
214
215
- - -
308
309
- - -
310
0.5
0.75
0.75
0.75
1.0
C
A
B
C
A
5.4
2.5
2.5
2.5
1.35
6.0
2.7
2.7
2.7
1.5
6.6
2.8
2.8
2.8
1.61
See footnotes at end of table.
MIL-PRF-39019/1H
5
TABLE I. Circuit breaker dash numbers and applicable characteristics - Continued.
Dash number 1/
Current
rating
(amps)
Time delay
R es ist anc e or impe danc e
(ohms - max) 2/
Standard
delay
High
inrush
DC
60 Hz
400 Hz
216
217
260
261
262
311
- - -
340
341
- - -
1.0
1.0
1.25
1.25
1.25
B
C
A
B
C
1.35
1.35
0.9
0.9
0.9
1.5
1.5
1.0
1.0
1.0
1.61
1.61
1.1
1.1
1.1
263
264
265
218
219
342
343
- - -
312
313
1.5
1.5
1.5
2.0
2.0
A
B
C
A
B
0.65
0.65
0.65
0.40
0.40
0.70
0.70
0.70
0.40
0.40
0.75
0.75
0.75
0.50
0.50
220
221
222
223
224
- - -
314
315
- - -
316
2.0
2.5
2.5
2.5
3.0
C
A
B
C
A
0.40
0.25
0.25
0.25
0.15
0.40
0.25
0.25
0.25
0.15
0.50
0.27
0.27
0.27
0.17
225
226
227
228
229
317
- - -
318
319
- - -
3.0
3.0
4.0
4.0
4.0
B
C
A
B
C
0.15
0.15
0.10
0.10
0.10
0.15
0.15
0.10
0.10
0.10
0.17
0.17
0.12
0.12
0.12
230
231
232
233
234
320
321
- - -
322
323
5.0
5.0
5.0
6.0
6.0
A
B
C
A
B
0.061
0.061
0.061
0.042
0.042
0.063
0.063
0.063
0.043
0.043
0.072
0.072
0.072
0.050
0.050
235
236
237
238
239
- - -
324
325
- - -
326
6.0
7.0
7.0
7.0
7.5
C
A
B
C
A
0.042
0.036
0.036
0.036
0.031
0.043
0.036
0.036
0.036
0.031
0.050
0.040
0.040
0.040
0.038
240
241
242
243
244
327
- - -
328
329
- - -
7.5
7.5
8.0
8.0
8.0
B
C
A
B
C
0.031
0.031
0.027
0.027
0.027
0.031
0.031
0.028
0.028
0.028
0.038
0.038
0.035
0.035
0.035
See footnotes at end of table.
MIL-PRF-39019/1H
6
TABLE I. Circuit breaker dash numbers and applicable characteristics - Continued.
Dash number 1/
Current
rating
(amps)
Time delay
R es ista nc e or imped ance
(ohms - max) 2/
Standard
delay
High
inrush
DC
60 Hz
400 Hz
245
246
247
248
249
330
331
- - -
332
333
9.0
9.0
9.0
10.0
10.0
A
B
C
A
B
0.022
0.022
0.022
0.018
0.018
0.022
0.022
0.022
0.021
0.021
0.028
0.028
0.028
0.024
0.024
250
251
252
253
254
- - -
334
335
- - -
336
10.0
12.5
12.5
12.5
15.0
C
A
B
C
A
0.018
0.012
0.012
0.012
0.009
0.021
0.013
0.013
0.013
0.009
0.024
0.015
0.015
0.015
0.010
255
256
257
258
259
337
- - -
338
339
- - -
15.0
15.0
20.0
20.0
20.0
B
C
A
B
C
0.009
0.009
0.006
0.006
0.006
0.009
0.009
0.006
0.006
0.006
0.010
0.010
0.007
0.007
0.007
1/ For configuration 2, add "S" at end of dash number.
2/ The corresponding maximum wattage losses, which in no case shall exceed 3.0 watts, may be calculated as
I2R or I2Z.
MIL-PRF-39019/1H
7
TABLE II. Cross reference of superseded part numbers.
Superseded
MIL-C-39019/1B
part number
M39019/1-
New
part number
M39019/01-
MIL-C-39019/1B
part number
New
part number
M39019/01-
Superseded
MIL-C-39019/1B
part number
M39019/1-
New
part number
M39019/01-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
200
201
200
201
200
201
200
201
200
201
209
210
209
210
209
210
209
210
209
210
215
216
215
216
215
216
215
216
215
216
224
225
224
225
224
225
224
225
224
225
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
230
231
230
231
230
231
230
231
230
231
248
249
248
249
248
249
248
249
248
249
254
255
254
255
254
255
254
255
254
255
257
258
257
258
257
258
257
258
257
258
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
218
219
218
219
218
219
227
228
227
228
227
228
233
234
233
234
233
234
236
237
236
237
236
237
242
243
242
243
242
243
245
246
245
246
245
246
251
252
251
252
251
252
MIL-PRF-39019/1H
8
The margins of this specification are marked with vertical lines to indicate where changes from the previous issue
were made. This was done as a convenience only and the Government assumes no liability whatsoever for any
inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document
based on the entire content irrespective of the marginal notations and relationship to the last previous issue.
Custodians: Preparing activity:
Army - CR Army - CR
Navy - EC
Air Force - 85 Agent:
DLA - CC DLA - CC
Review activities: (Project 5925-2009-032)
Army - AT, AV, MI
Navy - AS, MC
Air Force - 19, 99
NOTE: The activities listed above were interested in this document as of the date of this document. Since
organizations and responsibilities can change, you should verify the currency of the information above using the
ASSIST Online database at https://assist.daps.dla.mil.