4920-00-502-2264 FIXTURE,ENGINE MAINTENANCE,AIRCR Index 4920-00-502-2276 SPACER,BALANCE,FRONT COMPRESSOR

National Stock Number:
5925-00-502-2272

Federal Supply Class:
5925

National Item Identification Number:
005022272

Description:
CIRCUIT BREAKER

Detail:
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.


Manufacturer Information:
43A8304-2088049SAFETY FOR VISUAL EDUCATION


Techincal Specification:
POLE QUANTITY1
MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE20.0 AMPERES AC AND
20.0 AMPERES DC SINGLE LOCATION
CIRCUIT PROTECTION TYPEOVERCURRENT SINGLE LOCATION
TERMINAL TYPE AND QUANTITY2 SCREW
OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS30.0 AC AND
30.0 DC SINGLE LOCATION
TRIP RELEASE CHARACTERISTICTIME DELAY SINGLE LOCATION
RESET METHODMANUAL
MOUNTING FACILITY TYPE AND QUANTITY1 THREADED BUSHING
CASE MATERIALPLASTIC
TRIP RELEASE METHODTHERMAL SINGLE LOCATION
MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS400.0 AC AND
400.0 DC SINGLE LOCATION
TRIP RELEASE AMBIENT TEMP RATING25.0 DEG CELSIUS NOMINAL SINGLE LOCATION
TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT400.000 NOMINAL AT 125 PCT AND
5.500 NOMINAL AT 200 PCT AND
1.600 NOMINAL AT 300 PCT SINGLE LOCATION
ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT110.0 SINGLE LOCATION
MAIN CONTACT TRIPPING MECHANISM TYPETRIP FREE
OVERALL LENGTH2.188 INCHES NOMINAL
OVERALL HEIGHT1.656 INCHES NOMINAL
OVERALL WIDTH0.750 INCHES NOMINAL
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD SIZE0.138 INCHES
THREAD QUANTITY PER INCH32
MANUAL ACTUATOR TYPE AND QUANTITY1 PUSH BUTTON
ACTUATOR FUNCTIONTRIP-RESET
INCLOSURE PROTECTION TYPE FOR WHICH DESIGNEDDUSTPROOF


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