Device for controlling and pressurising a switch for an electric cut-off device with at least two positions

摘要

The device has a cage (11) compressing an end (14a) of a compression spring (14), when a mobile contact (5) is in contact with a fixed contact (3). A piston (15) assures pressurization of contact of the mobile contact with the fixed contact, during the compression of the end of the spring. The piston compresses another end (14b) of the spring, when the mobile contact is in contact with a fixed contact (4). The cage assures pressurization of contact of the mobile contact with the fixed contact (4), during the compression of the end (14b) of the spring.