5925-00-539-4910, CIRCUIT BREAKER

5905-00-539-4903 RESISTOR,VARIABLE,NONWIRE WOUND,NONPRECI

National Stock Number:
5925-00-539-4910

Federal Supply Class:
5925

National Item Identification Number:
005394910

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:

DKN30	79500	WESTINGHOUSE ELECTRIC CORP
MILC17587	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

ADJUSTABLE TRIP SETTING CURRENT RANGE PER POLE IN AMPS	+250.0 TO 500.0 DC ALL LOCATIONS
CIRCUIT PROTECTION TYPE	OVERCURRENT ALL LOCATIONS
FEATURES PROVIDED	ADJUSTABLE TRIP RELEASE
MAIN CONTACT TRIPPING MECHANISM TYPE	TRIP FREE
MANUAL ACTUATOR TYPE AND QUANTITY	1 ROTARY
MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE	250.0 AMPERES DC ALL LOCATIONS
MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS	30000.0 DC ALL LOCATIONS
MOUNTING FACILITY TYPE AND QUANTITY	6 UNTHREADED HOLE
NONDEFINITIVE SPEC/STD DATA	ACB TYPE
OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS	250.0 DC ALL LOCATIONS
POLE QUANTITY	2
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS	AS DIFFERENTIATED BY MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE,OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS
RESET METHOD	MANUAL
TERMINAL TYPE AND QUANTITY	4 BUS BAR
TRIP RELEASE CHARACTERISTIC	INSTANTANEOUS AND TIME DELAY ALL LOCATIONS
TRIP RELEASE METHOD	MAGNETIC ALL LOCATIONS
UNTHREADED MOUNTING HOLE DIAMETER	0.562 INCHES NOMINAL

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