The contact module is suited for safety switches with positive actuation. Because of the design with separate contact bridge this switching module is especially suited for the use as a switch for locking means in door interlocks. The separated assembly of the contact bridge allows a contact opening of any size. The same element is built into the KRONENBERG door interlocks, however in another plastic part with preformed lever for fixation at the latch bolt.

The switching module ER is suited for safety switches with positive actuation. This is only valid for one or several normally open contacts. Further precondition is the actuation over a sufficiently long distance, to result in a contact opening of minimal 2 x 2 mm results. The switching module is also used as auxiliary switch and is thus applied at door interlocks, key switches, limit switches etc. The plunger is equipped with a roller and can therefore be actuated by a ramped device.