Clamp-on breaker lockouts are versatile and easy to install using the proprietary thumbwheel design - no screwdrivers needed! Widely used - suitable for wide range of single-pole and internal-trip multi-pole breakers Detachable cleat (included) expands the range of applicable breakers Clamp-on breaker lockouts is to complete the locking of the handle of the circuit breaker equipment by means of screw tightening, realize the safety management of locking and tagging, and prevent accidental operation. Electrical lockout lockouts body and button part are made of reinforced nylon PA material with wear resistance, corrosion resistance, good insulation and temperature difference resistance (-50℃~+177℃). The miniature circuit breaker lockouts do not require any installation tools! The lock body comes with a button buckle design, and the installation can be easily completed by manually pressing the button. And The lever-type circuit breaker lock uses a finger-turned first wheel for quick installation. Suitable for a variety of single-stage, multi-stage and any miniature circuit breakers to protect employees from electrical accidents during equipment maintenance.