Circuit breaker lockout is mainly used to prevent the sudden start of electrical equipment during maintenance and protection of personal safety. Our breaker lockout device isolate and secure almost any breaker switch. Provides snap-in and clamp options covering most circuit breakers. Oversize clamps and universal multipole breaker lockout devices are also available. It should be noted that the circuit breaker lockout only plays an isolation role. To lock the circuit breaker and mark the isolation state, it must be used in conjunction with safety padlock and lockout tag of the LEDS.