ON-OFF
PLATE
i==::::p:x~~===~
t
--□
.
625
z
MAX
t==:~3:~t==~_J
_l_
MAX_J
_c=:]
__
~
CONFIGURATION
1
.375-32
UNEF-2A
INCH-POUND
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 brea ker conf igur atio n .
AMSC N/A FSC 5925
~~;:::==:-1---,-
__
o
z .625
MAX
~~~:__J_l_
MAX_J
8°-14~8•-14•
LOAD
li
21)
LINE
CIRCUIT
DIAGRAM
SEE
NOTE
10
HEX
NUT
!SEE
NOTE
INTERNAL
TOOTH
LOCKWASHER
(SEE
NOTE
6)
1
!--
. 240
I -·
±.
060
I
SPHERICAL
ON-OFF
PLATE
t
KEYWAY
.063 ±.005
.380
WIDE
.332 .030 ±.005
==n
DEEP
LOCK
RING-~-...L._---1-_.,_
IF
NEEDED
PANEL
(SEE
NOTE
9)
SEAL
I
I
I
L
__
1·810
"O"-RING
MAX
I
MARKING
i_lSEE
NOTE
8l
c..J
I
i
.375-32
UNEF-2A
I
i--
INSULATING
I I
BLOCK
!-'--i
!SEE
NOTE
1
ll
j.250
MIN
l'---MAIN
TERMINALS
. 2501-- . 610
DIA
I--
MIN
MAX
~
138-32
X
.250
SCRrn
~
.
!NO.
6
LOCKWASHERl
SEE
NOTE
11
CONFIGURATION
2
MIL-PRF-39019/1H
FIGURE 1. Circuit brea ker conf igur atio n -Continued.
2
-~-t
::~
DEPTH
I .
325
C
TO
C
I
I
--+--~
I
I .391
DIA
PANEL
MOUNTING
DETAIL
MIL-PRF-39019/1H
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-off plate has locking 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 brea ker conf igur atio n -Continued.
3
MIL-PRF-39019/1H
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
Resist anc e or impe danc e
(ohms -max) 2/
Standard
delay
High
inrush
DC
60 Hz
400 Hz
200
300
0.05
A
680.0
690.0
710.0
201 301 0.05 B 680.0 690.0 710.0
202 --- 0.05 C 680.0 690.0 710.0
203 302 0.1 A 150.0 170.0 180.0
204 303 0.1 B 150.0 170.0 180.0
205
---
0.1
C
150.0
170.0
180.0
206
304
0.25
A
20.0
26.0
27.0
207 305 0.25 B 20.0 26.0 27.0
208 --- 0.25 C 20.0 26.0 27.0
209 306 0.5 A 5.4 6.0 6.6
210
307
0.5
B
5.4
6.0
6.6
211
---
0.5
C
5.4
6.0
6.6
212 308 0.75 A 2 .5 2 .7 2 .8
213 309 0.75 B 2 .5 2 .7 2 .8
214 --- 0.75 C 2.5 2.7 2.8
215
310
1.0
A
1.35
1.5
1.61
See footnotes at end of table.
4
MIL-PRF-39019/1H
TABLE I. Circuit breaker dash numbers and applicable characteristics -Continued.
Dash number 1/
Current
rating
(amps)
Time delay
Resist anc e or impe danc e
(ohms -max) 2/
Standard
delay
High
inrush
DC 60 Hz 400 Hz
216
311
1.0
B
1.35
1.5
1.61
217 --- 1.0 C 1.35 1.5 1.61
260 340 1.25 A 0 .9 1 .0 1 .1
261 341 1.25 B 0.9 1.0 1.1
262
---
1.25
C
0.9
1.0
1.1
263
342
1.5
A
0.65
0.70
0.75
264 343 1.5 B 0.65 0.70 0.75
265 --- 1.5 C 0.65 0.70 0.75
218 312 2.0 A 0.40 0.40 0.50
219
313
2.0
B
0.40
0.40
0.50
220
---
2.0
C
0.40
0.40
0.50
221 314 2.5 A 0.25 0.25 0.27
222 315 2.5 B 0.25 0.25 0.27
223 --- 2.5 C 0.25 0.25 0.27
224
316
3.0
A
0.15
0.15
0.17
225
317
3.0
B
0.15
0.15
0.17
226 --- 3.0 C 0.15 0.15 0.17
227 318 4.0 A 0.10 0.10 0.12
228 319 4.0 B 0.10 0.10 0.12
229
---
4.0
C
0.10
0.10
0.12
230
320
5.0
A
0.061
0.063
0.072
231 321 5.0 B 0.061 0.063 0.072
232 --- 5.0 C 0.061 0.063 0.072
233 322 6.0 A 0.042 0.043 0.050
234
323
6.0
B
0.042
0.043
0.050
235
---
6.0
C
0.042
0.043
0.050
236 324 7.0 A 0.036 0.036 0.040
237 325 7.0 B 0.036 0.036 0.040
238 --- 7.0 C 0.036 0.036 0.040
239
326
7.5
A
0.031
0.031
0.038
240
327
7.5
B
0.031
0.031
0.038
241 --- 7.5 C 0.031 0.031 0.038
242 328 8.0 A 0.027 0.028 0.035
243 329 8.0 B 0.027 0.028 0.035
244
---
8.0
C
0.027
0.028
0.035
See footnotes at end of table.
5
MIL-PRF-39019/1H
TABLE I. Circuit breaker dash numbers and applicable characteristics -Continued.
Dash number 1/
Current
rating
(amps)
Time delay
Resista nc e or imped ance
(ohms -max) 2/
Standard
delay
High
inrush
DC 60 Hz 400 Hz
245
330
9.0
A
0.022
0.022
0.028
246 331 9.0 B 0.022 0.022 0.028
247 --- 9.0 C 0.022 0.022 0.028
248 332 10.0 A 0.018 0.021 0.024
249
333
10.0
B
0.018
0.021
0.024
250
---
10.0
C
0.018
0.021
0.024
251 334 12.5 A 0.012 0.013 0.015
252 335 12.5 B 0.012 0.013 0.015
253 --- 12.5 C 0.012 0.013 0.015
254
336
15.0
A
0.009
0.009
0.010
255
337
15.0
B
0.009
0.009
0.010
256 --- 15.0 C 0.009 0.009 0.010
257 338 20.0 A 0.006 0.006 0.007
258 339 20.0 B 0.006 0.006 0.007
259
---
20.0
C
0.006
0.006
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.
6
MIL-PRF-39019/1H
TABLE II. Cross reference of superseded part numbers.
Superseded
New
New
Superseded
New
MIL-C-39019/1B part number MIL-C-39019/1B part number MIL-C-39019/1B part number
part number M39019/01- part number M39019/01- part number M39019/01-
M39019/1-
M39019/1-
1
200
230
81
218
2 201 42 231 82 219
3 200 43 230 83 218
4 201 44 231 84 219
5 200 45 230 85 218
6 201 46 231 86 219
7 200 47 230 87 227
8 201 48 231 88 228
9 200 49 230 89 227
10 201 50 231 90 228
11 209 51 248 91 227
12 210 52 249 92 228
13 209 53 248 93 233
14 210 54 249 94 234
15 209 55 248 95 233
16 210 56 249 96 234
17 209 57 248 97 233
18 210 58 249 98 234
19 209 59 248 99 236
20 210 60 249 100 237
21 215 61 254 101 236
22 216 62 255 102 237
23 215 63 254 103 236
24 216 64 255 104 237
25 215 65 254 105 242
26 216 66 255 106 243
27 215 67 254 107 242
28 216 68 255 108 243
29 215 69 254 109 242
30 216 70 255 110 243
31 224 71 257 111 245
32 225 72 258 112 246
33 224 73 257 113 245
34 225 74 258 114 246
35 224 75 257 115 245
36 225 76 258 116 246
37 224 77 257 117 251
38 225 78 258 118 252
39 224 79 257 119 251
40 225 80 258 120 252
121 251
122 252
7
MIL-PRF-39019/1H
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.
8