Over Hoist A2B Switch

Over hoist limit switch is a crane safety device mounted on the hoist/crane head. The sensor activates when the hook block approaches close to the head pulley block avoiding a collision leading to an accident.Over hoist limit switch is a safety device that is provided to allow the setting of the hoist travel within a prescribed travel range. Hoist: The upper limit of hoist travel is achieved through a hook operated type limit switch and the lower limit of hoist travel is achieved through a drum-activated limit switch.