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Electrical
Circuit breakers for aviation maintenance and overhaul sourcing. Search by manufacturer part number or NSN. Listings are PartsPerk-owned observations for review — not live inventory or airworthiness approval.
262 owned part identities in this path
Follow the maintenance program and the manufacturer’s cycle or inspection limits. Replace on erratic trip, failed test, or damage — not on a category-page rule of thumb.
Lockout/tagout belongs on the work card whenever a circuit must stay open. Note lockout hardware on the RFQ if you need it with the breaker.
Overload, short, and some nuisance thermal conditions. Diagnose the circuit; do not just upsize the breaker from this catalog.
Start with the manufacturer part number from the illustrated parts catalog or maintenance manual. If an NSN is listed, search that next. Confirm finish, dash number, and engine or airframe applicability before opening an RFQ.
PartsPerk catalog pages show PartsPerk-owned observations only. They are not live stock, not certification, and not OEM affiliation. Exact PN/NSN identity is for sourcing review; publication and sellability require separate approval.
262 PartsPerk-owned parts in Circuit breakers
PSM35N — KLIXON® PSM-35-N Circuit Breaker - 35 AMP
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Manufacturer P/N PSM-35-N Schedule B Code 8536.20.0040 Pack Quantity 1 Klixon PSM-35-N Circuit Breaker - 35 AMP
PSM5 — KLIXON® PSM-5 Circuit Breaker - 5 AMP
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Manufacturer P/N PSM-5 Schedule B Code 8536.20.0040 Pack Quantity 1 Klixon PSM5 Breaker
Paco Plastics S4933959-501 FAA-PMA Red Circuit Breaker Lockout Ring without Tag
Approvals and Conformities NSN 5925-01-317-4993 Product Attributes Country of Origin United States Shipping Weight 0.001 pounds ECCN 9A991.d Color Family Red Manufacturer P/N S4933959-501 Schedule B Code 3917.29.0090 Pack Quantity 1 Ship Dimensions 0
Paco Plastics S4933959-503 FAA-PMA Yellow Circuit Breaker Lockout Ring without Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Yellow Manufacturer P/N S4933959-503 Schedule B Code 3917.29.0090 Pack Quantity 1 Ship Dimensions 1 x 1 x 1 inches Col
Paco Plastics S4933959-505 FAA-PMA Blue Circuit Breaker Lockout Ring without Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Blue Manufacturer P/N S4933959-505 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Blue Circuit Breaker Safety Lock
Paco Plastics S4933959-507 FAA-PMA Black Circuit Breaker Lockout Ring without Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Black Manufacturer P/N S4933959-507 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Black Circuit Breaker Safety Lo
Paco Plastics S4933959-509 FAA-PMA Natural/Clear Circuit Breaker Lockout Ring with Hole - without Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Clear Manufacturer P/N S4933959-509 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Clear Circuit Breaker Safety Lo
Paco Plastics S4933959-511 FAA-PMA Red Circuit Breaker Lockout Ring with Hole/No Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Red Manufacturer P/N S4933959-511 Schedule B Code 3917.29.0090 Pack Quantity 1 Ship Dimensions 1 x 1 x 1 inches Color
Paco Plastics S4933959-513 FAA-PMA Yellow Circuit Breaker Lockout Ring with Hole - without Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Yellow Manufacturer P/N S4933959-513 Schedule B Code 3917.29.0090 Pack Quantity 1 Ship Dimensions 1 x 1 x 1 inches Col
Paco Plastics S4933959-521 FAA-PMA Red "REMOVE BEFORE FLIGHT" Tag Circuit Breaker Lockout Ring
Approvals and Conformities NSN 1240-01-523-0410 Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Red Manufacturer P/N S4933959-521 Schedule B Code 3917.29.0090 Pack Quantity 1 Ship Dimensions 2
Paco Plastics S4933959-523 FAA-PMA Yellow Circuit Breaker Lockout Ring with "REMOVE BEFORE FLIGHT" Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Yellow Manufacturer P/N S4933959-523 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Yellow Circuit Breaker Safety
Paco Plastics S4933959-525 FAA-PMA Blue Circuit Breaker Lockout Ring with "REMOVE BEFORE FLIGHT" Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Blue Manufacturer P/N S4933959-525 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Blue Circuit Breaker Safety Lock
Paco Plastics S4933959-527 FAA-PMA Black Circuit Breaker Lockout Ring with "REMOVE BEFORE FLIGHT" Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Black Manufacturer P/N S4933959-527 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Black Circuit Breaker Safety Lo
Paco Plastics S4933959-529 FAA-PMA Natural/Clear Circuit Breaker Lockout Ring with "INOPERATIVE" Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Clear Manufacturer P/N S4933959-529 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Clear Circuit Breaker Safety Lo
Paco Plastics S4933959-531 FAA-PMA Red "INOPERATIVE" Tag Circuit Breaker Lockout Ring
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Red Manufacturer P/N S4933959-531 Schedule B Code 3917.29.0090 Pack Quantity 1 Ship Dimensions 2 x 1 x 1 inches Color
Paco Plastics S4933959-533 FAA-PMA Yellow "INOPERATIVE" Tag Circuit Breaker Lockout Ring
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Yellow Manufacturer P/N S4933959-533 Schedule B Code 3917.29.0090 Pack Quantity 1 Ship Dimensions 3 x 1 x 1 inches Col
Paco Plastics S4933959-535 FAA-PMA Blue Circuit Breaker Lockout Ring with "INOPERATIVE" Tag
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Blue Manufacturer P/N S4933959-535 Schedule B Code 3917.29.0090 Pack Quantity 1 Color Blue Circuit Breaker Safety Lock
Paco Plastics S4933959-537 FAA-PMA Black Circuit Breaker Lockout Ring with "INOPERATIVE" Tag - 50/Pack
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 2.5 pounds ECCN 9A991.d Color Family Black Manufacturer P/N S4933959-537 Schedule B Code 3917.29.0090 Pack Quantity 50 Color Black Circuit Breaker Safety Lo
KLIXON® SDLM-80 Circuit Breaker - 80 AMP
Approvals and Conformities NSN 5925-01-552-7768 Product Attributes Country of Origin United States Size 80 AMP Shipping Weight 0.05 pounds ECCN 9A991.d Color Family Black Manufacturer P/N SDLM-80 Schedule B Code 8536.20.0040 Pack Quantity 1 Ship Dime
TE Connectivity Elcon W23X1A1G1 Circuit Breaker - W23 - 1A - Push/Pull
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.35 pounds ECCN EAR99 Manufacturer P/N W23X1A1G1 Schedule B Code 8536.20.0040 Pack Quantity 1 The Tyco Elcon W23X1A1G1 Circuit Breaker is a Potter and Brum
TE Connectivity Elcon W23X1A1G10 Circuit Breaker - W23 - 10A - Push/Pull
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.35 pounds ECCN EAR99 Manufacturer P/N W23X1A1G10 Schedule B Code 8536.20.0040 Pack Quantity 1 The Tyco Elcon W23X1A1G10 Circuit Breaker is a Potter and Br
W31X2M1G5 — TE Connectivity W31-X2M1G-5 Circuit Breaker - Single Pole
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.2 pounds ECCN EAR99 Manufacturer P/N W31-X2M1G-5 Schedule B Code 8536.20.0192 Pack Quantity 1 Tyco W31-X2M1G-5 Circuit Breaker - Single Pole Body Style: S
No. Category pages show PartsPerk-owned observations for sourcing review. Stock, price, trace, and airworthiness stay off the page until a separate publication review.
Yes. Submit quantity, required documents, and need-by date through the sourcing desk. Volume review is human — these pages do not auto-discount.