5925-01-414-4678, CIRCUIT BREAKER

National Stock Number:
5925-01-414-4678

Federal Supply Class:
5925

National Item Identification Number:
014144678

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:

M55629/20JK	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MIL-C-55629/20	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MIL-PRF-55629/20	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

ACTUATOR FUNCTION	TRIP-RESET
ACTUATOR POSITION DESIGNATION	AT POLE ONE
BODY LENGTH	0.750 INCHES NOMINAL
BODY STYLE	SINGLE POLE TYPE
BODY WIDTH	2.000 INCHES NOMINAL
BUSHING LENGTH	0.625 INCHES NOMINAL
CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO LENGTH	1.530 INCHES NOMINAL
CIRCUIT PROTECTION TYPE	OVERCURRENT SINGLE LOCATION
INCLOSURE PROTECTION TYPE FOR WHICH DESIGNED	FUNGUS RESISTANT
INTERNAL TRIP RELEASE CONFIGURATION	SERIES TRIP SINGLE LOCATION
MAIN CONTACT TRIPPING MECHANISM TYPE	TRIP FREE
MANUAL ACTUATOR TYPE AND QUANTITY	1 TOGGLE
MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE	3.0 AMPERES DC SINGLE LOCATION
MAXIMUM INTERRUPTING CAPACITY CURRENT TYPE AND RATING PER POLE IN AMPS	2000.0 DC SINGLE LOCATION
MOUNTING FACILITY TYPE AND QUANTITY	1 THREADED BUSHING WITH PANEL SEAL
MOUNTING SURFACE TO TERMINAL END DISTANCE	2.232 INCHES MAXIMUM
NOMINAL THREAD SIZE	0.500 INCHES
OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS	50.0 DC SINGLE LOCATION
POLE QUANTITY	1
RESET METHOD	MANUAL
SPECIFICATION/STANDARD DATA	81349-MIL-C-55629/20 GOVERNMENT SPECIFICATION
SWITCH VOLTAGE RATING AND TYPE IN VOLTS	50.0 DC
SWITCH CONTACT ARRANGEMENT	SINGLE POLE, DOUBLE THROW
SWITCH CURRENT RATING AND TYPE IN AMPS	1.0 DC
SWITCH LOCATION AND POSITION DESIGNATION	INTERNAL AT POLE ONE
SWITCH TERMINAL TYPE	SCREW
TERMINAL TYPE AND QUANTITY	2 TAB W/SCREW
TEST DATA DOCUMENT	81349-MIL-C-55629 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UN
TRIP RELEASE CHARACTERISTIC	TIME DELAY SINGLE LOCATION
TRIP RELEASE METHOD	MAGNETIC SINGLE LOCATION
TRIP DELAY TIME IN SECONDS PER RATED CONTINUOUS CURRENT	2.600 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT SINGLE LOCATION
ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT	150.0 SINGLE LOCATION

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