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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
64959 AMERICAN TELEPHONE AND TELEGRAPH CO

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
FREQ FREQUENCY IN HERTZ 60.0 SINGLE LOCATION
BBRG STORAGE TYPE GENERAL PURPOSE WAREHOUSE
CPRH CIRCUIT PROTECTION TYPE OVERCURRENT SINGLE LOCATION
AFJN FRAGILITY FACTOR MODERATELY RUGGED
TTQY TERMINAL TYPE AND QUANTITY 2 THREADED STUD
CPSM INTERNAL TRIP RELEASE CONFIGURATION SERIES TRIP SINGLE LOCATION
CQXF INCLOSURE PROTECTION TYPE FOR WHICH DESIGNED FUNGUS RESISTANT AND MOISTURE RESISTANT
CPRR MAIN CONTACT TRIPPING MECHANISM TYPE TRIP FREE
CPRJ TRIP RELEASE METHOD MAGNETIC SINGLE LOCATION
CPRF OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS 250.0 AC SINGLE LOCATION
ADTV CASE MATERIAL PLASTIC
AKPX POLE QUANTITY 1
CPRQ RESET METHOD MANUAL
AXHR MOUNTING FACILITY TYPE AND QUANTITY 2 THREADED HOLE
THSD THREAD SERIES DESIGNATOR UNC
CPRW ACTUATOR FUNCTION TRIP-RESET
CQWN TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT 3.000 MINIMUM AT 200 PCT SINGLE LOCATION AND 10.000 MAXIMUM AT 200 PCT SINGLE LOCATION
CPRX ACTUATOR POSITION DESIGNATION AT POLE ONE
CPLM MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE 250.0 MILLIAMPERES AC SINGLE LOCATION
CPRT MANUAL ACTUATOR TYPE AND QUANTITY 1 TOGGLE
CMLP THREAD QUANTITY PER INCH 32
CPRL TRIP RELEASE CHARACTERISTIC TIME DELAY SINGLE LOCATION
CPRN ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT 125.0 SINGLE LOCATION
CPRG MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS 1000.0 AC SINGLE LOCATION
CQJX NOMINAL THREAD SIZE 0.138 INCHES

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