Power Circuit Limit Switches

Crane Power Circuit Limit Switches are mounted on a crane trolley to prevent over travel of the crane hook when hoisting. These enclosed switches are available as single and duplex types from 50-500 hp. Power Circuit Limit Switches utilize double pole - double-throw power circuit contacts to disconnect the main power to the hoist motor. On dc applications, a resistor is required with the limit switch to provide dynamic braking.