This Circuit Breaker Safety Lock (S493959531) has a red "INOPERATIVE DO NOT OPERATE" tag.
Designed to prevent the inadvertent closing of circuit breakers connected to equipment that is under repair or removed from the aircraft. The tag measures 2 x 3/4 in and is easily installed and removed from Klixon and similar type circuit breakers.
AI disclosure: this description was generated with AI assistance from this product's own listing data.
Product Codes | |
|---|---|
| Mfr Part No: | S493959-531 |
| ECCN: | EAR99 |
| PMA: | PQ1810NM |
| PROAPP: | PQ1810NM |
| SCHEDULE B CODE: | 8803300010 |
- Stock: Warehouse
- Manufacturer Part #: S493959-531
Aircraft Fitment Finder
Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
- Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
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See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
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