MIL-PRF-39019/6H
14 May 2010
SUPERSEDING
MIL-PRF-39019/6G
27 August 1997
PERFORMANCE SPECIFICATION SHEET
CIRCUIT BREAKERS, MAGNETIC, LOW-POWER, SEALED, TRIP-FREE
THREE-POLE, AUXILIARY CONTACTS
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 specification sheet and MIL-PRF-39019.
(SEE NOTE 13)
(SEE NOTE 11)
NC
C
3 AUXILARY
CONTACT TERMINALS
(SEE NOTE 14)
NO
FIGURE 1. Circuit breaker configuration.
AMSC N/A FSC 5925
MIL-PRF-39019/6H
2
FIGURE 1. Circuit breaker configuration - Continued.
MIL-PRF-39019/6H
3
Inches mm Inches mm Inches mm Inches mm Inches mm
.005 0.13 .125 3.18 .325 8.26 .392 9.96 .687 17.45
.015 0.38 .138 3.51 .332 8.43 .493 12.52 .906 23.01
.030 0.76 .140 3.56 .375 9.52 .507 12.88 1.562 39.67
.060 1.52 .188 4.78 .380 9.65 .610 15.49 1.828 46.43
.062 1.57 .240 6.10 .382 9.70 .625 15.88 1.937 49.20
.063 1.60 .250 6.35 .391 9.93 .641 16.28 1.950 49.53
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 ±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 ±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-off plate has locking tab.
10. Numerical marking optional on circuit diagram.
11. Sealscrew, .138-32 UNC-2A x .312 (7.92 mm) long, stainless steel number 18-8 (type 347) MS35265-25 or
equivalent with appropriate O-rings. O-rings should be chosen to enable the circuit breaker to meet the
performance requirements of this specification. Possible source: AMP Hexseal Corporation.
12. Use of panel screws will enhance circuit breaker shock and vibration characteristics.
13. Threaded inserts exceed height of bushing by .005 to .015 (0.13 mm to 0.38 mm).
14. Auxiliary contact terminals shall be located on the back side of the circuit breaker (same surface as main
terminals), but otherwise their location, style, and form shall be optional, consistent with dimensional or other
specified requirements. Auxiliary contact terminals shall accommodate two number 20 AWG wires.
15. 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 configuration - Continued.
MIL-PRF-39019/6H
4
REQUIREMENTS:
Dimensions and configuration: See figure 1 and note 15.
Weight: For reference only, approximately 150 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 M39019/06-(dash number taken from table I) (e.g.,
M39019/06-200, M39019/06-200S).
Cross reference: See table II.
TABLE I. Circuit breaker dash numbers and applicable characteristics.
Dash number 1/
Current
rating
(amps)
Time delay
Resistance or impedance
(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-39019/6H
5
TABLE I. Circuit breaker dash numbers and applicable characteristics - Continued.
Dash number 1/
Current
rating
(amps)
Time delay
Resistance or impedance (ohms - max) 2/
Standard
delay
High
inrush
DC
60 Hz
400 Hz
216
217
218
219
220
311
- - -
312
313
- - -
1.0
1.0
2.0
2.0
2.0
B
C
A
B
C
1.35
1.35
0.40
0.40
0.40
1.5
1.5
0.40
0.40
0.40
1.61
1.61
0.50
0.50
0.50
221
222
223
224
225
314
315
- - -
316
317
2.5
2.5
2.5
3.0
3.0
A
B
C
A
B
0.25
0.25
0.25
0.15
0.15
0.25
0.25
0.25
0.15
0.15
0.27
0.27
0.27
0.17
0.17
226
227
228
229
230
- - -
318
319
- - -
320
3.0
4.0
4.0
4.0
5.0
C
A
B
C
A
0.15
0.10
0.10
0.10
0.061
0.15
0.10
0.10
0.10
0.063
0.17
0.12
0.12
0.12
0.072
231
232
233
234
235
321
- - -
322
323
- - -
5.0
5.0
6.0
6.0
6.0
B
C
A
B
C
0.061
0.061
0.042
0.042
0.042
0.063
0.063
0.043
0.043
0.043
0.072
0.072
0.050
0.050
0.050
236
237
238
239
240
324
325
- - -
326
327
7.0
7.0
7.0
7.5
7.5
A
B
C
A
B
0.036
0.036
0.036
0.031
0.031
0.036
0.036
0.036
0.031
0.031
0.040
0.040
0.040
0.038
0.038
241
242
243
244
245
- - -
328
329
- - -
330
7.5
8.0
8.0
8.0
9.0
C
A
B
C
A
0.031
0.027
0.027
0.027
0.022
0.031
0.028
0.028
0.028
0.022
0.038
0.035
0.035
0.035
0.028
246
247
248
249
250
331
- - -
332
333
- - -
9.0
9.0
10.0
10.0
10.0
B
C
A
B
C
0.022
0.022
0.018
0.018
0.018
0.022
0.022
0.021
0.021
0.021
0.028
0.028
0.024
0.024
0.024
See footnotes at end of table.
MIL-PRF-39019/6H
6
TABLE I. Circuit breaker dash numbers and applicable characteristics - Continued.
Dash number 1/
Current
rating
(amps)
Time delay
Resistance or impedance
(ohms - max) 2/
Standard
delay
High
inrush
DC
60 Hz
400 Hz
251
252
253
254
255
334
335
- - -
336
337
12.5
12.5
12.5
15.0
15.0
A
B
C
A
B
0.012
0.012
0.012
0.009
0.009
0.013
0.013
0.013
0.009
0.009
0.015
0.015
0.015
0.010
0.010
256
257
258
259
260
- - -
338
339
- - -
340
15.0
20.0
20.0
20.0
1.25
C
A
B
C
A
0.009
0.006
0.006
0.006
0.9
0.009
0.006
0.006
0.006
1.0
0.010
0.007
0.007
0.007
1.1
261
262
263
264
265
341
- - -
342
343
- - -
1.25
1.25
1.5
1.5
1.5
B
C
A
B
C
0.9
0.9
0.65
0.65
0.65
1.0
1.0
0.70
0.70
0.70
1.1
1.1
0.75
0.75
0.75
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-39019/6H
7
TABLE II. Cross reference of superseded part numbers.
Superseded
MIL-C-39019/6B
part number
M39019/6-
New
part number
M39019/06-
Superseded
MIL-C-39019/6B
part number
M39019/6-
New
part number
M39019/06-
Superseded
MIL-C-39019/6B
part number
M39019/6-
New
part number
M39019/06-
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
41
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-39019/6H
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 5925-2009-037)
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.