Switch arrangement having zero-voltage tripping

摘要

A switch arrangement having zero-voltage tripping by means of a trip coil whose prestressed armature acts on a tripping cam of the latching slide. The technical problem is for the trip coil to act directly on the latching slide without, however, impeding the other functions of the latching slide. The tripping cam (123) of the latching slide (110) has two profiled surfaces (124, 125), which are arranged parallel to one another and are aligned inclined with respect to the movement direction of the latching slide (110). Seated on the holder (120) of the armature (118) is at least one pivoting lever (127) having two profiled surfaces (36, 37) which are aligned parallel to one another and are also in each case aligned essentially parallel to the profiled surfaces (24, 25) of the tripping cam (123) of the latching slide. The inclination of the profiled surfaces of the tripping cam (123) and of the tab (135) is selected such that the latching slide is displaced into the free-tripping position during the de-energising movement of the armature. The pivoting lever (127) can be pivoted out freely during the attraction movement of the armature, but is blocked against pivoting out during the de-energising movement of the armature. <IMAGE>