1Premium Material: Made of high strength, erosion resistant, spark proof aluminum alloy, this lockout device is sturdy and not easily deform, suitable for various harsh working environments. 2Easy Locking: Circuit breaker lockout uses a universal small screw, simply clamp it on the circuit breaker handle and tighten the screw to securely clamp the locking device on the handle, then hang an insulated padlock to prevent loosening. 3Secure Design: Circuit breaker lockout features an internal clamping design that securely grips the circuit breaker handle, ensuring the effectiveness of the locking tag during use and isolating and securing the circuit breaker switch. 4Wide Application: Professionally designed for various micro circuit breakers (no need to modify panels or breakers themselves), to protect employees from electrical accidents during equipment maintenance. 5Recommended Combination: The circuit breaker lock is recommended for use with insulated padlocks and safety tags to achieve energy isolation, equipment locking, and prevent accidental operation.