Abstract: An interlocking arrangement for switching devices for blocking the operation of the switching device when a feeder door is open, including a feeder assembly with an interlock and a racking screw interlock assembly. The feeder assembly includes a switching device mounted on a feeder base plate of the feeder assembly and mechanically connected with an interlock slider by a locking clutch cable. The racking screw interlock assembly is mounted to the feeder channel by an interlock base plate, the racking screw interlock assembly including an interlock base plate to accommodate the locking clutch cable. The interlock slider is slidably mounted on the baseplate by a plurality of step screws and slots provided on the base plate.

Abstract: The invention generally relates to an arrangement/integration, particularly for Switching Devices with external feeder, more particularly relates to a separate package of interlock system to be used for withdraw able type MCCBs with Direct operating handle to prevent unintentional racking operation of feeder.