1、PREMIUM MATERIAL: The lock body and button part of circuit breaker lock are made of reinforced nylon PA material, which is wear resistant, prevent corrosion, insulated and temperature difference resistant. 2、SAFE AND DURABLE: PA circuit breaker lock is strong and durable, and not easy to deformation, suitable for industrial electric isolation area, to guard employees from electrical accidents during equipment maintenance. 3、EASY TO INSTALL: This circuit breaker lock comes with a button buckle design, which can be easily installed by manually pressing the button. Standard pin out ensures a perfect fit for installation. 4、WIDELY APPLICABLE: Professional circuit breaker switch lock for all kinds of single stage, multi stage and any miniature circuit breaker (without modifying the panel or the breaker itself). 5、SUGGESTIONS FOR USE: The breaker lockout device is recommended to be used with insulated padlocks and safety tagout to achieve energy isolation, equipment lockout, and prevent misoperation.