1、Pc and Nylon: Our 3P circuit breaker transparent protection cover is made of Pc and nylon material, just place the protection cover on the circuit breaker, it can be locked and removed at will. 2、Applicable Scenario: Protection cover is suitable for 3P miniature circuit breaker, which can realize safety padlock (not included) locking with locking beam diameter less than or equal to 7mm. 3、Firm Installation: The transparent protection cover can be firmly installed on the circuit breaker switch without affecting the automatic tripping of the switch and can check the status of the electrical switch in time for the management of equipment maintenance personnel. 4、Industrial Backing: Transparent protection cover is equipped with industrial backing for easy installation, just fix the cover on the circuit breaker, which can effectively prevent accidental operation. 5、Matching Use: Our 3P circuit breaker transparent protection cover can be used with padlock (not included) to achieve better results.