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 Ltr A B C D E F G H J K L M N P R S T U Inches Min Max .735 .765 .641 .671 1.189 1.251 1.969 2.031 .060 .065 .030 .035 .115 .145 .199 .261 .312 REF .374 REF 1.499 1.561 --2.232 .719 .781 .594 .656 .365 .395 .019 REF .021 REF .030 .035 .079 REF .141 REF .019 REF .081 REF mm Min Max 18.67 19.43 16.28 17.04 30.20 31.78 50.01 51.59 1.52 1.65 0.76 0.89 2.92 3.68 5.05 6.63 7.92 REF 9.50 REF 38.07 39.65 --56.69 18.26 19.84 15.09 16.66 9.27 10.03 0.48 REF 0.53 REF 0.76 0.89 2.01 REF 3.58 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 MIL-PRF-55629/20G FIGURE 2. Dimensions and configurations (configuration 2) - Continued. 3 MIL-PRF-55629/20G Inches mm Ltr A B C D E F G H J K L M N P R S T U V W X Y Z Min .735 .641 1.205 1.985 .060 .030 .115 .215 .280 1.515 ----.610 .735 .030 .019 .095 REF .360 .095 .095 .245 .329 .055 Max .765 .671 1.235 2.015 .065 .035 .145 .245 .310 1.545 2.256 2.620 .640 .765 .035 .021 .125 REF .390 .125 .125 .275 .359 .085 Min 18.67 16.28 30.61 50.42 1.52 0.76 2.92 5.46 7.11 38.48 ----15.50 18.67 0.76 0.48 2.41 REF 9.14 2.41 2.41 6.22 8.36 1.40 Max 19.43 17.04 31.37 51.18 1.65 0.89 3.68 6.22 7.87 39.24 57.30 66.55 16.26 19.43 0.89 0.53 3.18 REF 9.91 3.18 3.18 6.99 9.12 3.18 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Unless otherwise specified, tolerance is .015 (0.38 mm). 4. Lockwasher, split, No. 8 NASM35338-137 or equivalent. 5 Terminal screw, No. 8, .164-32UNC-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 2. Dimensions and configurations (configuration 2) - Continued. 4 MIL-PRF-55629/20G REQUIREMENTS Dimensions and configuration: See figure 1 and figure 2. Current ratings: See table I. High inrush: Applies unless otherwise specified. 1/ Voltage ratings: See table II. Ratings are maximum; the minimum operating voltage is limited by the internal resistance or impedance of the circuit breaker (see table I). Auxiliary contacts: Contact capacity shall be 10 amperes to 250 volts 60/400 Hz and 2 amperes resistive, 1 ampere inductive to 50 V dc. Tripping-time delays: See table I and table II. Terminal and mounting hardware: See figure 1. Terminals: See figure 1. Solderability is applicable to auxiliary contact terminals. Actuator strength: 25 pounds. Actuator operating force: 4 pounds, maximum. Terminal strength: Applied load: 30 pounds. Applied torque: 10 inch-pounds. Interrupting capacities: 2,000 amperes at 50 V dc. 2,000 amperes at 120 V ac, 60 Hz. 1,500 amperes at 120 V ac, 400 Hz. 1,000 amperes at 240 V ac, 60 and 400 Hz. Seal: Panel seal test applies. Part or Identifying Number (PIN): The PIN to be cataloged and stocked by the Government consists of the prefix M55629/20 and two succeeding code letters as follows: 1/, 2/ M55629/20 E M Single pole circuit breaker with panel seal and auxiliary contacts. Current rating code, see table I. Voltage, frequency, and time delay curve code, see tables I and II. ______ 1/ Special PINs for equipment manufacturers use only. Equipment manufacturers who do not require the high-inrush feature or auxiliary contacts in specific production applications may order circuit breakers without these features by modifying the prefix as follows: M55629/20XX: Replace slash with A for items without auxiliary contacts (M55629A20XX). Replace slash with B for items without the high-inrush feature (M55629B20XX). Replace slash with C for items without either the high-inrush feature or auxiliary contacts (M55629C20XX). 2/ Replace slash with D for items requiring configuration 2 (M55629D20XX). Replace slash with E for items requiring configuration 2 without auxiliary contacts (M55629E20XX). Replace slash with F for items requiring configuration 2 without the high-inrush feature (M55629F20XX). Replace slash with G for items requiring configuration 2 without the high-inrush feature or auxiliary contacts (M55629G20XX). 5 MIL-PRF-55629/20G When circuit breakers without auxiliary contacts are installed in new equipment, replacement spares should possess this feature since it is more economic for the DoD to stock one version of this item instead of two. Therefore, stock numbers should not be requested (or assigned) for this special PIN. TABLE I. Circuit breaker dash numbers and applicable characteristics (configuration 1). Current rating Amperes Code letter 0.1 0.1 0.1 0.250 0.250 0.250 0.35 0.35 0.35 0.5 0.5 0.5 0.75 0.75 0.75 1.0 1.0 1.0 1.75 1.75 1.75 2.5 2.5 2.5 3.0 3.0 3.0 A A A B B B C C C D D D E E E F F F G G G H H H J J J Voltage frequency and tripping time delay code letter from table II Resistance or impedance ohms (max) K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S 120 at dc 120 at 60 Hz 350 at 400 Hz 21 at dc 23 at 60 Hz 43 at 400 Hz 12 at dc 12 at 60 Hz 30 at 400 Hz 6 at dc 6 at 60 Hz 12 at 400 Hz 3 at dc 3 at 60 Hz 7 at 400 Hz 2 at dc 2 at 60 Hz 4 at 400 Hz 0.9 at dc 0.9 at 60 Hz 2 at 400 Hz .35 at dc .35 at 60 Hz .6 at 400 Hz .3 at dc .3 at 60 Hz .5 at 400 Hz Current rating Amperes Code letter 4.0 4.0 4.0 5.0 5.0 5.0 7.5 7.5 7.5 10.0 10.0 10.0 12.5 12.5 12.5 15.0 15.0 15.0 20.0 20.0 20.0 25.0 25.0 25.0 30.0 30.0 30.0 6 K K K L L L M M M N N N P P P R R R S S S T T T U U U Voltage frequency and tripping time delay code letter from table II Resistance or impedance ohms (max) K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S .1 at dc .1 at 60 Hz .3 at 400 Hz .08 at dc .08 at 60 Hz .15 at 400 Hz .035 at dc .035 at 60 Hz .11 at 400 Hz .02 at dc .02 at 60 Hz .04 at 400 Hz .013 at dc .015 at 60 Hz .03 at 400 Hz .01 at dc .011 at 60 Hz .02 at 400 Hz .007 at dc .007 at 60 Hz .01 at 400 Hz .006 at dc .006 at 60 Hz .007 at 400 Hz .005 at dc .005 at 60 Hz .006 at 400 Hz MIL-PRF-55629/20G TABLE II. Circuit breaker dash numbers and applicable characteristics (configuration 2). Current rating Amperes Code letter 0.1 0.1 0.1 0.250 0.250 0.250 0.35 0.35 0.35 0.5 0.5 0.5 0.75 0.75 0.75 1.0 1.0 1.0 1.75 1.75 1.75 2.5 2.5 2.5 3.0 3.0 3.0 A A A B B B C C C D D D E E E F F F G G G H H H J J J Voltage frequency and tripping time delay code letter from table II K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S Resistance or impedance ohms (max) Current rating Amperes Code letter 4.0 4.0 4.0 5.0 5.0 5.0 7.5 7.5 7.5 10.0 10.0 10.0 12.5 12.5 12.5 15.0 15.0 15.0 20.0 20.0 20.0 25.0 25.0 25.0 30.0 30.0 30.0 186 at dc 142 at 60 Hz 350 at 400 Hz 26.4 at dc 26.4 at 60 Hz 60 at 400 Hz 13.2 at dc 13.2 at 60 Hz 30 at 400 Hz 6 at dc 6.36 at 60 Hz 13.2 at 400 Hz 3 at dc 3 at 60 Hz 7 at 400 Hz 2 at dc 2 at 60 Hz 4 at 400 Hz 0.9 at dc 0.9 at 60 Hz 2 at 400 Hz 0.35 at dc 0.35 at 60 Hz 0.7 at 400 Hz 0.3 at dc 0.3 at 60 Hz 0.5 at 400 Hz 7 K K K L L L M M M N N N P P P R R R S S S T T T U U U Voltage frequency and tripping time delay code letter from table II K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S K or L M or N P, R, or S Resistance or impedance ohms (max) 0.113 at dc 0.1 at 60 Hz 0.3 at 400 Hz 0.08 at dc 0.08 at 60 Hz 0.175 at 400 Hz 0.035 at dc 0.035 at 60 Hz 0.11 at 400 Hz 0.02 at dc 0.02 at 60 Hz 0.04 at 400 Hz 0.016 at dc 0.015 at 60 Hz 0.03 at 400 Hz 0.012 at dc 0.011 at 60 Hz 0.02 at 400 Hz 0.0075 at dc 0.007 at 60 Hz 0.01 at 400 Hz 0.006 at dc 0.006 at 60 Hz 0.009 at 400 Hz 0.005 at dc 0.005 at 60 Hz 0.006 at 400 Hz TABLE III. Operating voltage, frequency, and tripping-time delay (configuration 1). 1/ 8 100 125 150 200 400 600 800 1,000 1,800 2/ Tripping-time delay at 25C 2C (tripping time in seconds) 240 V ac, 60 Hz 50 V dc K Max L Min no trip one hour 10 100 N/A N/A 2.5 20 .36 2 .13 1 Inst .6 Inst .29 no trip Max M Min no trip one hour .5 12 N/A N/A .13 1.5 .031 .29 Inst .15 Inst .06 Inst .05 no trip See footnotes at end of table IV. Max N Min no trip one hour 10 120 N/A N/A 3 20 .3 2.3 .13 1 Inst .6 Inst .29 no trip Max 240 V ac, 400 Hz P Min no trip one hour 1 18 N/A N/A .16 1.6 .04 .3 Inst .17 Inst .09 Inst .043 no trip Max R Min no trip one hour N/A N/A 6 60 2.1 20 .4 4 Inst .6 Inst .06 Inst .045 no trip Max S Min no trip one hour N/A N/A .6 5.8 .2 2 .035 .35 Inst .125 Inst .05 Inst .036 no trip Max Min no trip one hour N/A N/A 60 500 20 160 2 19 .250 3.5 .025 .5 Inst .043 no trip MIL-PRF-55629/20G Time delay percent rated current TABLE IV. Operating voltage, frequency, and tripping-time delay (configuration 1) - Continued. 1/ 9 100 125 150 200 400 600 800 50 V dc K -40 +85 Max Min no trip one hour .5 500 N/A N/A .1 100 Inst 20 Inst 5 Inst 2 Tripping-time delay at high and low temperature C (tripping time in seconds) 3/ 240 V 60 Hz 240 V 400 Hz L -40 +85 Max Min no trip one hour .1 100 N/A N/A .05 10 Inst 3 Inst 1 Inst .5 M -40 +85 Max Min no trip one hour 1 500 N/A N/A .05 100 Inst 20 Inst 5 Inst .5 N -40 +85 Max Min no trip one hour .1 100 N/A N/A .05 10 Inst 3 Inst 1 Inst .5 P -40 +85 Max Min no trip one hour N/A N/A .5 500 .1 100 Inst 20 Inst 5 Inst .5 R -40 +85 Max Min no trip one hour N/A N/A .1 100 .05 10 Inst 3 Inst 1 Inst .5 S -40 +85 Max Min no trip one hour N/A N/A 5 1500 .5 500 Inst 100 Inst 5 Inst .5 1/ Circuit breakers shall not trip at 100 percent rated current but must trip at 125 or 150 percent of rated current. Between 100 percent and 125 or 150 percent, they may trip. Instantaneous is defined as less than 15 milliseconds. 2/ Items without the high-inrush feature (for use in production only) are not subject to this requirement. High-inrush test shall be performed using one alternation which has a peak value of 1800 percent of rated current. 400 Hz and dc delays shall be subjected to a 400 Hz waveform, 60 Hz delays shall be subjected to a 60 Hz waveform. 3/ High and low test temperature tolerances are 2C. MIL-PRF-55629/20G Time delay percent rated current TABLE V. Operating voltage, frequency, and tripping-time delay (configuration 2). 1/ Time delay percent rated current K Max Min no trip one hour 7 60 N/A N/A 0.6 10 0.15 2 Inst 1 Inst 0.5 Inst 0.1 no trip See footnotes at end of table VI. no trip one hour 0.5 6.5 N/A N/A 0.13 1.2 0.031 0.5 Inst 0.25 Inst 0.1 Inst Inst no trip no trip one hour 10 120 N/A N/A 2.2 20 0.3 3 Inst 2 Inst 0.8 Inst 0.25 no trip no trip one hour 0.7 12 N/A N/A 0.13 3 0.03 1 Inst 0.3 Inst 0.15 Inst 0.1 no trip no trip one hour N/A N/A 5 70 2.1 25 0.4 5 Inst 2.4 Inst 1 Inst 0.1 no trip no trip one hour N/A N/A 0.5 8 0.15 1.9 0.02 0.4 Inst 0.25 Inst 0.1 Inst 0.05 no trip Min no trip one hour N/A N/A 40 400 9.5 150 1.9 19 Inst 7 Inst 0.4 Inst 0.043 no trip MIL-PRF-55629/20G 10 100 125 150 200 400 600 800 1,000 1,800 2/ Tripping-time delay at 25C 2C (tripping time in seconds) 240 V ac, 60 Hz 240 V ac, 400 Hz L M N P R S Max Min Max Min Max Min Max Min Max Min Max 50 V dc TABLE VI. Operating voltage, frequency, and tripping-time delay (configuration 2) - Continued. 1/ 11 100 125 150 200 400 600 800 Tripping-time delay at high and low temperature C (tripping time in seconds) 3/ 240 V ac, 60 Hz 240 V ac, 400 Hz L M N P R S -40C +85C -40C +85C -40C +85C -40C +85C -40C +85C -40C +85C Max Min Max Min Max Min Max Min Max Min Max Min 50 V dc K -40C Max +85C Min no trip one hour 5 500 N/A N/A 0.1 100 Inst 20 Inst 5 Inst 2 no trip one hour 0.1 100 N/A N/A 0.05 10 Inst 3 Inst 1 Inst 0.5 no trip one hour 1 700 N/A N/A 0.05 160 Inst 26 Inst 13 Inst 2.8 no trip one hour 0.1 100 N/A N/A 0.05 10 Inst 3 Inst 1 0.5 Inst no trip one hour N/A N/A 0.5 600 0.1 130 Inst 32 Inst 26 Inst 8.4 no trip one hour N/A N/A 0.1 100 0.05 10 Inst 3 Inst 1 Inst 0.5 no trip one hour N/A N/A 5 1500 0.5 500 Inst 100 Inst 24 Inst 3 1/ Circuit breakers shall not trip at 100 percent rated current but must trip at 125 or 150 percent of rated current. Between 100 percent and 125 or 150 percent, they may trip. Instantaneous is defined as less than 15 milliseconds. 2/ High-inrush test shall be performed using one alternation, which has a peak value of 1,800 percent of rated current. 400 Hz and dc delays shall be subjected to a 400 Hz waveform, 60 Hz delays shall be subjected to a 60 Hz waveform. 3/ High and low test temperature tolerances are 2C. MIL-PRF-55629/20G Time delay percent rated current MIL-PRF-55629/20G Circuit breakers covered by this specification replace commercial types as specified in table III providing they have equivalent current, voltage, frequency, and time delay ratings. Circuit breakers without either auxiliary contacts or the high-inrush feature should be replaced by equivalently rated military items with both of these features. TABLE VII. Supersession and substitution data. Superseding military PIN Superseded manufacturers PIN CAGE 81541 CAGE 74193 Type JE1 Type APGN-6 UPGN-6 IEGN-6 M55629/20XX Reference documents. In addition to MIL-PRF-55629, this document references the following: ASTM-B545 MS25082 NASM3212 NASM35338 SAE-AMS-QQ-N-290 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: Army - CR Navy - EC Air Force - 85 DLA - CC Preparing activity: Army - CR Review activities: Army - AV, CR4, MI Navy - AS, MC, OS, SH Air Force - 19, 99 (Project 5925-2010-020) Agent: DLA - CC 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. 12