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A4419 — CIRCUIT BREAKER

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

A4419: CIRCUIT BREAKER.

The CIRCUIT BREAKER is a the manufacturer industrial component. Key specifications include end_item_identification: SWITCHBOARD, 5SA, part_name_assigned_by_controlling_agency: ASSEMBLY,BUS TAB,BREAKER. This part is cataloged in the U.S.

Government catalog under NSN 5925-01-733-8640, 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→ A4419
NSN: 5925-01-733-8640
FSC: 5925 — Circuit Breakers
CAGE: 47750 — PLAINVILLE ELECTRICAL PRODUCTS COMPANY, THE DBA PLAINVILLE ELECTRICAL PRODUCTS (USA)
SPECIFICATIONS
end_item_identificationSWITCHBOARD, 5SA
part_name_assigned_by_controlling_agencyASSEMBLY,BUS TAB,BREAKER
NSN5925-01-733-8640
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CIRCUIT BREAKER TITLE COMPONENT PN A4419 MFR CIRCUIT BREAKER
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYASSEMBLY,BUS TAB,BREAKER
END ITEM IDENTIFICATIONSWITCHBOARD, 5SA
OTHER ITEMS IN FSC 5925 — Circuit Breakers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5925-00-001-1277 5925-00-001-2809 5925-00-001-3838 5925-00-001-5748 5925-00-001-5926 5925-00-001-5938 5925-00-001-5942 5925-00-001-5977
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A4419?
A4419 is a CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).
What is the NSN for A4419?
A4419 is cataloged in the U.S. Government catalog under NSN 5925-01-733-8640. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.