Schaltkontaktanordnung eines Niederspannungs-Leistungsschalter mit Kontaktkraftfedern

摘要

The invention relates to a switching contact (1) arrangement for a low-voltage power switch, comprising several contact levers (11) and at least two contact force springs (14) per contact lever (11). The contact force springs (14) do not act together along the entire travel of the contact lever (11), rather at first towards the end of the switching on process. The above is achieved by means of a pressure pin (22) which holds one of the contact force springs (14) in a pre-tensioned state and first engages the contact lever (11) towards the end of the switching-on process. The above switch contact arrangement (1) is characterised by a favourable relationship of the force necessary for switching on in relation to the switching travel and permits favourable dimensions for the drive device (25) of the power switch.