1、Multi Keyholes Design: With multiple keyholes, convenient for multiple staff to lock management at the same time, this product can be locked for three padlocks at the same time. 2、Strong Material: The product is made of PC material, which is a durable engineering material. The processing technology makes the product more resistant. 3、Energy Isolation: The air switch lock is applicable for small and medium sized moulded case circuit breakers and three phase circuit breakers to achieve energy isolation, equipment locking. 4、Easy to Lock and Unlock: With locking screws, there is no need to use other locking tools to lock the product, the locking state is more stable and convenient. 5、Widely Used: Circuit breaker lock, safe and firm, is widely used in chemical plants, automobile manufacturing, steel plants, valves and pipelines and other scenes.