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XR and XF

Screw limit switches and Overtravel limit switches

End of commercialisation

Screw limit switches and over travel limit switches

XR and XF
  • Features

    Screw limit switches XRB A and XR2 A types
    • Screw limit switches, standard duty, type XRB A: standard duty ac. or dc. (Ithe = 10 A)
    • Screw limit switches, heavy duty, XR2 A and XR2 B types: heavy duty ac .or dc. (Ithe = 10 A: XR2 A or 20 A: XR2 B).

    Over travel limit switches for power circuits, type XF9
    • XF9-D: in an alu allow housing, they are fitted with the head of an LC1-D contactor: With manual latching and resetting restricted by a padlockable device
    • XF9-F: in a sheet steel enclosure, they are fitted with the head of an LC1-F contactor: With manual latching and resetting or With counterweights and automatic resetting.


    The screw limit switches are designed to monitor the movement of an object via an input drive.
    The over travel limit switches for power circuit switching are specifically designed to ensure the safety of hoisting equipment.
    They directly break the power supply to the hoist motor if the load being handled accidentally exceeds the operating limits of the equipment.


    • Position control of moving parts of hoisting or materials handling equipment (winches, travelling cranes, gantries, cranes, rotary excavators, etc.).
    • Liquid level control in pumping systems.


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