Electrical contact switch

摘要

The invention relates to an electrical contact switch, especially a door contact switch, having a contact element which can be moved in the longitudinal direction within a housing, against the influence of a spring, between limit positions which produce opened and closed contacts, one end of which contact element projects beyond the housing. The subject matter of the invention is distinguished by the fact that the contact element (10) can be moved beyond the first limit position (I) into an additional limit position (III) which produces open contacts, and can be locked there, and that the locking and its cancellation can be carried out via a sprung latching element (29), which is integrally formed in a recess (28) in the housing wall (27), has a latching tab (31) at one end and has an attachment (32) which is fitted on the contact element (10), which is secured such that it cannot rotate, the attachment (32) resting against the outside (36) of the latching tab (31) of the latching element (29) in the first limit position (I) of the contact element (10). <IMAGE>