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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
79500 WESTINGHOUSE ELECTRIC CORP

Federal Supply Class

Title

CIRCUIT BREAKERS

Inclusions:

INCLUDES CIRCUIT BREAKERS AND CUTOUTS.

Exclusions:

EXCLUDES RELAYS.

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
FREQ FREQUENCY IN HERTZ 60.0 ALL LOCATIONS
PRMT PRECIOUS MATERIAL SILVER
CPRF OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS 240.0 AC ALL LOCATIONS AND 250.0 DC ALL LOCATIONS
AKPX POLE QUANTITY 3
AXHR MOUNTING FACILITY TYPE AND QUANTITY 6 UNTHREADED HOLE
PMLC PRECIOUS MATERIAL AND LOCATION CONTACT SURFACES SILVER
AEBV UNTHREADED MOUNTING HOLE DIAMETER 0.156 INCHES NOMINAL
CPRR MAIN CONTACT TRIPPING MECHANISM TYPE TRIP FREE
CPRN ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT 105.0 ALL LOCATIONS
CQWN TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT 28.000 NOMINAL AT 200 PCT ALL LOCATIONS
ADTV CASE MATERIAL PLASTIC
CPLM MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE 70.0 AMPERES DC ALL LOCATIONS
CPRQ RESET METHOD MANUAL
CPRL TRIP RELEASE CHARACTERISTIC INSTANTANEOUS ALL LOCATIONS AND TIME DELAY ALL LOCATIONS
CPRJ TRIP RELEASE METHOD THERMAL-MAGNETIC ALL LOCATIONS
CPRG MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS 5000.0 AC ALL LOCATIONS AND 5000.0 DC ALL LOCATIONS
TTQY TERMINAL TYPE AND QUANTITY 6 SCREW
CPRH CIRCUIT PROTECTION TYPE OVERCURRENT ALL LOCATIONS
CQXF INCLOSURE PROTECTION TYPE FOR WHICH DESIGNED DUSTPROOF

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