Part Number
Part Number:
NSN:
NIIN:
Item Name:
CIRCUIT BREAKER
Definition:
A DEVICE WITH MEANS OTHER THAN FUSES FOR AUTOMATICALLY OPENING THE CIRCUIT IN WHICH IT IS INSTALLED WHEN THE CURRENT VARIES FROM THE PREDETERMINED VALUE FOR WHICH THE DEVICE IS SET. MAY INCLUDE PROVISIONS FOR MANUAL OPERATION. AT LEAST ONE SET OF CONTACTS MUST BE IN SERIES WITH THE ACTUATING ELEMENT(S). A COMBINATION OF SEMICONDUCTOR AND PASSIVE DEVICES MAY BE USED IN LIEU OF CONTACTS. FOR AUTOMATICALLY OPERATED ITEMS IN WHICH THE ACTUATING (TRIPPING) ELEMENT AND CONTACTS ARE NOT IN SERIES, SEE RELAY (AS MODIFIED). FOR ITEMS WHICH ARE OPERATED BOTH MANUALLY AND AUTOMATICALLY BUT THE ACTUATING ELEMENTS AND CONTACT ARE NOT IN SERIES, SEE RELAY-SWITCH. EXCLUDES CIRCUIT BREAKER BOX AND MAGNETO "BREAKER" ASSEMBLIES. SEE ALSO SWITCH (AS MODIFIED); AND CONTROLLER.
CAGE Information
| Code | Company |
|---|---|
| 18876 | U S ARMY AVIATION AND MISSILE COMMAN |
Federal Supply Class
Title
CIRCUIT BREAKERS
Inclusions:
INCLUDES CIRCUIT BREAKERS AND CUTOUTS.
Exclusions:
EXCLUDES RELAYS.
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CPRH | CIRCUIT PROTECTION TYPE | OVERCURRENT SECOND LOCATION |
| FREQ | FREQUENCY IN HERTZ | 400.0 THIRD LOCATION |
| ADAQ | BODY LENGTH | 2.500 INCHES MAXIMUM |
| AKPX | POLE QUANTITY | 4 |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 50.0 AMPERES AC THIRD LOCATION |
| CPRH | CIRCUIT PROTECTION TYPE | OVERCURRENT THIRD LOCATION |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | SERIES TRIP FIRST LOCATION |
| TTQY | TERMINAL TYPE AND QUANTITY | 8 THREADED STUD |
| AEBP | CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO LENGTH | 1.955 INCHES MAXIMUM |
| CPRF | OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS | 250.0 AC THIRD LOCATION |
| CPRJ | TRIP RELEASE METHOD | MAGNETIC FIRST LOCATION |
| CQWN | TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT | 2.000 MINIMUM AT 200 PCT FIRST LOCATION AND 12.000 MAXIMUM AT 200 PCT FIRST LOCATION |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | SERIES TRIP SECOND LOCATION |
| CPRT | MANUAL ACTUATOR TYPE AND QUANTITY | 4 TOGGLE |
| FREQ | FREQUENCY IN HERTZ | 400.0 FIRST LOCATION |
| CPRJ | TRIP RELEASE METHOD | MAGNETIC SECOND LOCATION |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | SERIES TRIP THIRD LOCATION |
| CPRF | OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS | 250.0 AC SECOND LOCATION |
| CPRR | MAIN CONTACT TRIPPING MECHANISM TYPE | TRIP FREE |
| FEAT | SPECIAL FEATURES | POLE 4 SHALL BE A DUMMY POLE |
| CPRY | EXTERNAL ACTUATOR LINKAGE ARRANGEMENT | ONE, TWO, THREE, AND FOUR LINKED |
| AEBQ | CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO WIDTH | 0.760 INCHES MAXIMUM |
| AEHA | DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY WIDTH | 0.760 INCHES MAXIMUM |
| ADTV | CASE MATERIAL | PLASTIC |
| AJEC | BOSS HEIGHT | 0.165 INCHES MAXIMUM |
| CPRG | MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS | 1000.0 AC FIRST LOCATION |
| AXHR | MOUNTING FACILITY TYPE AND QUANTITY | 8 THREADED HOLE |
| CPRQ | RESET METHOD | MANUAL |
| CQWN | TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT | 2.000 MINIMUM AT 200 PCT SECOND LOCATION AND 12.000 MAXIMUM AT 200 PCT SECOND LOCATION |
| AEBY | DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH | 2.070 INCHES MAXIMUM |
| TEST | TEST DATA DOCUMENT | 18876-+55629-002 SPECIFICATION |
| CPRJ | TRIP RELEASE METHOD | MAGNETIC THIRD LOCATION |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 50.0 AMPERES AC FIRST LOCATION |
| CQWN | TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT | 2.000 MINIMUM AT 200 PCT THIRD LOCATION AND 12.000 MAXIMUM AT 200 PCT THIRD LOCATION |
| ADAT | BODY WIDTH | 3.060 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| CPRL | TRIP RELEASE CHARACTERISTIC | TIME DELAY FIRST LOCATION |
| CPRN | ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT | 125.0 FIRST LOCATION |
| CPRW | ACTUATOR FUNCTION | TRIP-RESET |
| FREQ | FREQUENCY IN HERTZ | 400.0 SECOND LOCATION |
| CPRG | MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS | 1000.0 AC SECOND LOCATION |
| CPRX | ACTUATOR POSITION DESIGNATION | AT EACH POLE |
| AAQL | BODY STYLE | MULTIPOLE-MULTIPLE ACTUATOR TYPE |
| CPRG | MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS | 1000.0 AC THIRD LOCATION |
| AJWX | MOUNTING SURFACE TO TERMINAL END DISTANCE | 2.491 INCHES MAXIMUM |
| CPRL | TRIP RELEASE CHARACTERISTIC | TIME DELAY SECOND LOCATION |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 50.0 AMPERES AC SECOND LOCATION |
| CPRN | ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT | 125.0 SECOND LOCATION |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CPRH | CIRCUIT PROTECTION TYPE | OVERCURRENT FIRST LOCATION |
| CPRL | TRIP RELEASE CHARACTERISTIC | TIME DELAY THIRD LOCATION |
| CQXF | INCLOSURE PROTECTION TYPE FOR WHICH DESIGNED | EXPLOSION PROOF AND FUNGUS RESISTANT AND MOISTURE RESISTANT |
| CQJX | NOMINAL THREAD SIZE | 0.138 INCHES |
| CPRF | OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS | 250.0 AC FIRST LOCATION |
| CPRN | ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT | 125.0 THIRD LOCATION |