Aircraft Spruce Canada
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| Description | Tag | Ring Color / Tag Color | PN | Price | Buy |
|---|---|---|---|---|---|
| Circuit Breaker Lockout Ring S4933959-501 | -- | Red / -- | 11-04463 | $4.40 | |
| Circuit Breaker Lockout Ring S4933959-503 | -- | Yellow / -- | 11-14695 | $4.40 | |
| Circuit Breaker Lockout Ring S4933959-505 | -- | Blue / -- | 11-14696 | $4.40 | |
| Circuit Breaker Lockout Ring S4933959-507 | -- | Black / -- | 11-14697 | $4.40 | |
| Circuit Breaker Lockout S4933959-521 | Remove Before Flight | Red / Red | 11-04464 | $10.50 | |
| Circuit Breaker Lockout S4933959-523 | Remove Before Flight | Yellow / Red | 11-14698 | $10.50 | |
| Circuit Breaker Lockout S4933959-525 | Remove Before Flight | Blue / Red | 11-14699 | $10.50 | |
| Circuit Breaker Lockout S4933959-527 | Remove Before Flight | Black / Red | 11-14700 | $10.50 | |
| Circuit Breaker Lockout S4933959-531 | Inoperative Do Not Operate | Red / Red | 11-04465 | $10.50 | |
| Circuit Breaker Lockout S4933959-533 | Inoperative Do Not Operate | Yellow / Red | 11-14701 | $10.50 | |
| Circuit Breaker Lockout S4933959-535 | Inoperative Do Not Operate | Blue / Red | 11-14702 | $10.50 | |
| Circuit Breaker Lockout S4933959-537 | Inoperative Do Not Operate | Black / Red | 11-14703 | $10.50 |
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Overview
|
These Circuit Breaker Safety Locks with & without tags. Prevents the inadvertent closing of circuit breakers connected to equipment that is under repair or removed from the aircraft. Easily installed flush to the panel so they won't accidentally be knocked off during maintenance and removed from Klixon and similar type circuit breakers. All S4933959-Series lockout rings are the only Lockout devices that have FAA-PMA approval and are issued with 8130-3 Tag for use during flight along with FAA Standard Maintenance Support Hardware approved for ground maintenance also. |
Reviews
Has the words Feds require. Back of tag can be marked with grease marker to identify the discrepancy or MEL it is required by.
Verified Purchase
Circuit Breaker Lockout Ring / Idno S4933959-531 Red
Very easy to install and remove. Perfect lockout tool for inop systems. Don’t forget to add a placard when installing.
Verified Purchase
Circuit Breaker Lockout Ring S4933959-507 Black
Good quick lock for Klixon Circuit Breakers, but no good for the Tyco W23 Circuit Breakers (for which these were bought).
Q&A
Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
These come in one size and they fit most standard circuit breakers. Per the supplier: "Easily installed and removed from Klixon and similar type circuit breakers."
3/8" diameter x 1/4" length.
