PartsTable
Technical Data Sheet
Download PDF

W51A121B1-10 — CIRCUIT BREAKER

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

W51A121B1-10: CIRCUIT BREAKER.

The CIRCUIT BREAKER is a the manufacturer industrial component. Key specifications include body_style: PANEL MOUNT, body_width: 0.598 INCHES NOMINAL IN, body_height: 0.937 INCHES NOMINAL IN, body_length: 1.098 INCHES NOMINAL IN, actuator_style: RECTANGULAR, actuator_width: 0.394 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5930-01-558-8924, 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→ W51A121B1-10
NSN: 5930-01-558-8924
NIINs: 015588924, 016278681
FSC: 5930 — Switches
CAGE: 00779 — TE CONNECTIVITY CORPORATION (USA)
SPECIFICATIONS
body_stylePANEL MOUNT
body_width0.598 INCHES NOMINAL IN
body_height0.937 INCHES NOMINAL IN
body_length1.098 INCHES NOMINAL IN
actuator_styleRECTANGULAR
actuator_width0.394 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
actuator_height0.118 INCHES NOMINAL IN
actuator_length0.827 INCHES NOMINAL IN
mounting_methodPANEL AND TERMINAL
actuator_inscriptionOFF AND RESET SINGLE ACTUATOR
end_item_identificationVIRGINIA CLASS SUBMARINE SSN-774
NSN5930-01-558-8924
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CIRCUIT BREAKER TITLE COMPONENT PN W51A121B1-10 MFR CIRCUIT BREAKER
KEY FEATURES
•
INCLOSURE TYPE: FULLY INCLOSED
•
ACTUATOR INSCRIPTION: OFF AND RESET SINGLE ACTUATOR
•
BODY STYLE: PANEL MOUNT
•
ACTUATOR STYLE: RECTANGULAR
•
MOUNTING METHOD: PANEL AND TERMINAL
•
ACTUATOR WIDTH: 0.394 INCHES NOMINAL IN
•
BODY WIDTH: 0.598 INCHES NOMINAL IN
•
BODY HEIGHT: 0.937 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INCLOSURE TYPEFULLY INCLOSED
ACTUATOR INSCRIPTIONOFF AND RESET SINGLE ACTUATOR
BODY STYLEPANEL MOUNT
ACTUATOR STYLERECTANGULAR
MOUNTING METHODPANEL AND TERMINAL
ACTUATOR WIDTH0.394 INCHES NOMINAL IN
BODY WIDTH0.598 INCHES NOMINAL IN
BODY HEIGHT0.937 INCHES NOMINAL IN
ACTUATOR POSITION-ACTION RELATIONSHIPUP POSITION MAINTAINED AND DOWN POSITION MOMENTARY
BODY LENGTH1.098 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
3041200 FIND 27Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy W51A121B1-10?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is W51A121B1-10?
W51A121B1-10 is a CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).
What parts can replace W51A121B1-10?
There is 1 known substitute for W51A121B1-10: 3041200 FIND 27. Substitute compatibility should be verified for your specific system.
What is the NSN for W51A121B1-10?
W51A121B1-10 is cataloged in the U.S. Government catalog under NSN 5930-01-558-8924. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — W51A121B1-10

✓ 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.