Safety switch with interlocked positions

摘要

The safety switch has a housing 10 with the contacts within a block 12 that has plunger actuation. A control head unit fits on top 13 and this has a slot to receive a mechanical part e.g fixed to a door, that has to be secured. Internally the control unit has a shaft with control rollers and an interlock that relates to a number of set positions X1,X2,X3 and is used to immobilise the mechanical part.