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56703 — Technical Data Sheet

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Tactic · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include end_item_identification: GENERATOR SET, part_name_assigned_by_controlling_agency: PULLEY,CRANKSHAFT. This part is cataloged in the Federal Logistics Information System under NSN 3455-00-275-1942, 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
56703
NSN: 3455-00-275-1942
FSC: 3455
CAGE: 42970 — LEAR SIEGLER INC NATIONAL TWIST DRILL AND TOOL DIV (USA)
SPECIFICATIONS
end_item_identificationGENERATOR SET
NSN3455-00-275-1942
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Tactic THERMAL RELEASE,CIRCUIT BREAKER TITLE COMPONENT PN 56703 MFR Tactic THERMAL RELEASE,CIRCUI
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
87039X1ANG25InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
M8000M110InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
C87039X1EInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
B30InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-S-80095TYPE1SIZE36InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
TIP00877-050CT70InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 56703?
56703 is a THERMAL RELEASE,CIRCUIT BREAKER manufactured by Tactic.
What parts can replace 56703?
There are 26 known substitutes for 56703: 87039X1ANG25, M8000M110, C87039X1E and 23 more. Substitute compatibility should be verified for your specific system.
Is 56703 still available?
56703 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026