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 |
|---|---|
| 23991 | LOCKHEED MARTIN CORPORATION DIV LOCK |
Federal Supply Class
Title
CIRCUIT BREAKERS
Inclusions:
INCLUDES CIRCUIT BREAKERS AND CUTOUTS.
Exclusions:
EXCLUDES RELAYS.
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| BBRJ | SPECIAL HANDLING FEATURE | MAGNETIC |
| CPRG | MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS | 1000.0 AC ALL LOCATIONS |
| FREQ | FREQUENCY IN HERTZ | 50.0 ALL LOCATIONS OR 60.0 ALL LOCATIONS |
| BBRG | STORAGE TYPE | GENERAL PURPOSE WAREHOUSE |
| AKPX | POLE QUANTITY | 4 |
| TTQY | TERMINAL TYPE AND QUANTITY | 10 THREADED STUD |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | SERIES TRIP FIRST LOCATION |
| AJWX | MOUNTING SURFACE TO TERMINAL END DISTANCE | 2.471 INCHES NOMINAL |
| AFJN | FRAGILITY FACTOR | MODERATELY RUGGED |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | SERIES TRIP SECOND LOCATION |
| CQWN | TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT | 20.000 MAXIMUM AT 200 PCT SECOND LOCATION |
| CPRT | MANUAL ACTUATOR TYPE AND QUANTITY | 4 TOGGLE |
| AEBY | DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH | 2.062 INCHES NOMINAL |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 1.0 AMPERES AC FOURTH LOCATION |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | SERIES TRIP THIRD LOCATION |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 20.0 AMPERES AC FIRST LOCATION |
| CPRR | MAIN CONTACT TRIPPING MECHANISM TYPE | TRIP FREE |
| ADAT | BODY WIDTH | 3.000 INCHES NOMINAL |
| CPRY | EXTERNAL ACTUATOR LINKAGE ARRANGEMENT | ONE, TWO, THREE, AND FOUR LINKED |
| AEBQ | CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO WIDTH | 0.750 INCHES NOMINAL |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 20.0 AMPERES AC SECOND LOCATION |
| AEBP | CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO LENGTH | 1.936 INCHES NOMINAL |
| ADAQ | BODY LENGTH | 2.500 INCHES NOMINAL |
| CQXF | INCLOSURE PROTECTION TYPE FOR WHICH DESIGNED | DUSTPROOF AND FUNGUS PROOF |
| ADTV | CASE MATERIAL | PLASTIC |
| AJEC | BOSS HEIGHT | 0.140 INCHES NOMINAL |
| AXHR | MOUNTING FACILITY TYPE AND QUANTITY | 8 THREADED HOLE |
| CPRQ | RESET METHOD | MANUAL |
| CQWN | TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT | 3.000 MINIMUM AT 200 PCT SECOND LOCATION AND 3.000 MINIMUM AT 200 PCT THIRD LOCATION AND 3.000 MINIMUM AT 200 PCT FIRST LOCATION AND 20.000 MAXIMUM AT 200 PCT FIRST LOCATION |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| CPRJ | TRIP RELEASE METHOD | MAGNETIC ALL LOCATIONS |
| CPRN | ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT | 125.0 ALL LOCATIONS |
| CPRL | TRIP RELEASE CHARACTERISTIC | TIME DELAY FIRST LOCATION |
| CPRW | ACTUATOR FUNCTION | TRIP-RESET |
| APNQ | ARC QUENCHING METHOD | MAGNETIC BLOWOUT |
| CPRX | ACTUATOR POSITION DESIGNATION | AT EACH POLE |
| AAQL | BODY STYLE | MULTIPOLE-MULTIPLE ACTUATOR TYPE |
| CPSM | INTERNAL TRIP RELEASE CONFIGURATION | RELAY TRIP FOURTH LOCATION |
| CPRH | CIRCUIT PROTECTION TYPE | OVERCURRENT ALL LOCATIONS |
| CPRL | TRIP RELEASE CHARACTERISTIC | INSTANTANEOUS FOURTH LOCATION |
| CPRF | OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS | 250.0 AC ALL LOCATIONS |
| CPRL | TRIP RELEASE CHARACTERISTIC | TIME DELAY SECOND LOCATION |
| CQWN | TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT | 20.000 MAXIMUM AT 200 PCT THIRD LOCATION |
| CPLM | MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE | 20.0 AMPERES AC THIRD LOCATION |
| CPRL | TRIP RELEASE CHARACTERISTIC | TIME DELAY THIRD LOCATION |
| CQJX | NOMINAL THREAD SIZE | 0.138 INCHES |
| AEHA | DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY WIDTH | 0.750 INCHES NOMINAL |