Circuit Breaker Lockout Ring Black/Indo S4933959-537

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.