INCH-POUND MIL-PRF-55629/20G 10 March 2010 SUPERSEDING MIL-PRF-55629/20F 21 September 2005 PERFORMANCE SPECIFICATION SHEET CIRCUIT BREAKERS, MAGNETIC, PANEL SEAL, TRIP-FREE, SERIES TRIP, SINGLE POLE (0.2 TO 30 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-55629/20G Inches mm Ltr Min Max Min Max A .735 .765 18.67 19.43 B .641 .671 16.28 17.04 C 1.189 1.251 30.20 31.78 D 1.969 2.031 50.01 51.59 E .060 .065 1.52 1.65 F .030 .035 0.76 0.89 G .115 .145 2.92 3.68 H .199 .261 5.05 6.63 J .312 REF .374 REF 7.92 REF 9.50 REF K 1.499 1.561 38.07 39.65 L --- 2.232 --- 56.69 M .719 .781 18.26 19.84 N .594 .656 15.09 16.66 P .365 .395 9.27 10.03 R .019 REF .021 REF 0.48 REF 0.53 REF S .030 .035 0.76 0.89 T .079 REF .141 REF 2.01 REF 3.58 REF U .019 REF .081 REF 0.48 REF 2.06 REF 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. Lockwasher, split, No. 8 NASM35338-137 or equivalent. 5 Terminal screw, No. 8, .164-32 UNC-2A, .187 .015 long, material: Brass, tin plated (ASTM-B545 or equivalent). 6. Passivated - corrosion resisting steel screw, slotted head with integral O-ring, may be replaced by the NASM3212-12 with cross-recessed head or equivalent. 7. Hex mounting nut .500 - 32 UNF-2B thread, .625 .010 across flats, .120/.125 thick, brass nickel plated, SAE-AMS-QQ-N-290 nonglare or equivalent may be replaced with MS25082-B22 or equivalent. 8. Internal tooth lockwasher, .625 .005 O.D., .510 .005 I.D., .028 .005 thick, stainless steel. 9. O-ring, material: Material shall be selected to enable the O-ring to meet the performance requirements of this specification. Butadiene acrylonitrite has been successfully used in the past and should be considered for meeting the O-ring requirements of the specification. 10. Auxiliary switch terminals shall provide for soldered connections. 11. Physical item marking of the words LOAD and CB CONT OPEN is optional. FIGURE 1. Dimensions and configurations (configuration 1) - Continued. 2