INCH-POUND
MIL-PRF-55629/6G
10 March 2010
SUPERSEDING
MIL-PRF-55629/6F
21 September 2005
PERFORMANCE SPECIFICATION SHEET
CIRCUIT BREAKERS, MAGNETIC, UNSEALED,
TRIP-FREE, THREE POLE, AUXILIARY CONTACTS
(0.2 TO 50 AMPERES)
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-55629.
FIGURE 1. Dimensions and configurations (configuration 1).
AMSC N/A FSC 5925 MIL-PRF-55629/6G
Inches mm
Ltr
Min Max Min Max
A .149 .211 3.78 5.36
B 1.420 1.470 36.07 37.34
C .359 .391 9.12 9.93
D .719 .781 18.16 19.84
E 2.046 2.078 51.97 52.76
F --- 2.530 --- 64.26
G .187 .249 4.75 6.32
H .109 .171 2.77 4.34
J .249 .311 6.32 7.90
K 1.660 1.960 42.16 49.78
L --- .427 R --- 10.84 R
M .519 .699 12.95 17.75
N --- 2.800 --- 71.12
P --- 2.340 --- 59.44
R 2.000 2.040 50.80 51.82
S --- 2.553 --- 64.85
T 2.205 2.285 56.01 58.04
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. Nut-hex: .190 - 32 UNF-2B, .313/.303 across flats, .109 .010 thick. Material: Brass
(ASTM-B121/B121M or equivalent); tin plated (ASTM-B545 or equivalent); or stainless steel, for
each terminal.
5. Captive washer nut assembly of brass nut, bronze washer, tin plated; or lockwasher, internal or
external tooth, NASM35333-107 or MS35335-88 or equivalent.
6. Washer, flat: .378/.368 O.D., .204/.190 I.D., .032 .005 thick. Material: Brass
(ASTM-B121/B121M or equivalent), tin plated (ASTM-B545 or equivalent), or phosphor bronze,
composition (ASTM-B139/B139M or equivalent).
7. Auxiliary contact terminals shall provide for soldered connections and shall be located on the back
side of the circuit breaker (same surface as main terminals) otherwise location, style and design
are optional.
8. Lockwasher, split: NASM35338-138 or equivalent.
9. Physical item marking of the words LOAD and CB CONT OPEN is optional.
FIGURE 1. Dimensions and configurations (configuration 1) Continued.
2