1278812 — CIRCUIT BREAKER

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

1278812: CIRCUIT BREAKER.

The CIRCUIT BREAKER is a the manufacturer industrial component. Key specifications include material: PLASTIC CASE, reset_method: MANUAL, overall_width: 1.250 INCHES NOMINAL IN, overall_height: 1.703 INCHES NOMINAL IN, overall_length: 2.000 INCHES NOMINAL IN, actuator_function: TRIP-RESET. This part is cataloged in the U.S.

Government catalog under NSN 5925-00-350-4370, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

MRO→ MRO_GENERAL→ 1278812

NSN: 5925-00-350-4370
FSC: 5925 — Circuit Breakers
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)

SPECIFICATIONS

material	PLASTIC CASE
reset_method	MANUAL
overall_width	1.250 INCHES NOMINAL IN
pole_quantity	1
overall_height	1.703 INCHES NOMINAL IN
overall_length	2.000 INCHES NOMINAL IN
actuator_function	TRIP-RESET
trip_release_method	THERMAL SINGLE LOCATION
circuit_protection_type	OVERCURRENT SINGLE LOCATION
terminal_type_and_quantity	2 SCREW
trip_release_characteristic	TIME DELAY SINGLE LOCATION
trip_release_ambient_temp_rating	25.0 CELSIUS NOMINAL SINGLE LOCATION DEGC
NSN	5925-00-350-4370

COMPONENT DIAGRAM

KEY FEATURES

•

RESET METHOD: MANUAL

•

OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS: 30.0 AC AND 30.0 DC SINGLE LOCATION

•

MOUNTING FACILITY TYPE AND QUANTITY: 2 UNTHREADED HOLE(S)

•

ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT: 125.0 SINGLE LOCATION

•

CIRCUIT PROTECTION TYPE: OVERCURRENT SINGLE LOCATION

•

UNTHREADED MOUNTING HOLE DIAMETER: 0.188 INCHES NOMINAL IN

•

POLE QUANTITY: 1

TECHNICAL CHARACTERISTICS

RESET METHOD	MANUAL
OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS	30.0 AC AND 30.0 DC SINGLE LOCATION
MOUNTING FACILITY TYPE AND QUANTITY	2 UNTHREADED HOLE(S)
OVERALL HEIGHT	1.703 INCHES NOMINAL IN
ULTIMATE TRIP RATING OF CONTINUOUS CURRENT RATING PER POLE IN PERCENT	125.0 SINGLE LOCATION
CIRCUIT PROTECTION TYPE	OVERCURRENT SINGLE LOCATION
UNTHREADED MOUNTING HOLE DIAMETER	0.188 INCHES NOMINAL IN
POLE QUANTITY	1
MAXIMUM CONTINUOUS LOAD CURRENT RATING PER POLE	10.0 AMPERES AC AND 10.0 AMPERES DC SINGLE LOCATION
OVERALL LENGTH	2.000 INCHES NOMINAL IN

SUBSTITUTES & CROSS-REFERENCES 5

3301955Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

1089 0322 07Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

P-350-4Reference document

Same NSN cross-reference

Reference document — Secondary reference

02331-0381Reference document

Same NSN cross-reference

Reference document — Replaced / superseded reference

1567090Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 1278812?

1278812 is a CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).

What parts can replace 1278812?

There are 5 known substitutes for 1278812: 3301955, 1089 0322 07, P-350-4 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 1278812?

1278812 is cataloged in the U.S. Government catalog under NSN 5925-00-350-4370. This indicates validated use in U.S. government and defense supply chains.

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