Limit switch for P&H machinery

The limit switch 3100A4649F1 functions as an electromechanical sensor within the control and safety architecture of P&H heavy machinery. Its primary role is to detect the presence or passage of a mobile crane component at a predetermined position. Upon activation, the device transmits an electrical signal to the control system, which may trigger a stop command, initiate a specific sequence, or activate an alarm. This component is used to prevent the exceedance of operational limits, thereby protecting the equipment and surrounding personnel.

This part is compatible with various P&H crane models, including lattice boom and cable-operated cranes where precise monitoring of the hook, boom, or trolley movement is required. Limit switches of this type are integrated into the machine's control circuits to manage motion boundaries. They typically feature internal electrical contacts that may be configured as normally open or normally closed depending on the specific circuit requirements, with an actuation mechanism designed to respond to mechanical contact from the machine's moving parts.