These circuit breaker lockouts can be secured onto the breaker without the need for tools, utilizing a convenient thumbscrew for swift installation. Designed for 480/600V breakers up to 2 ¼″ wide and 7/8″ thick, the lockout measures 2¾ ″ H x 2⅝ ″ L x 3¾ ″ W. It accommodates one padlock with shackles up to 9/32″. Crafted from durable polypropylene and nylon, the device offers reliable lockout functionality.