Vacuum Circuit Breaker, Contact Coil Assembly for Vacuum Circuit Breaker and Manufacturing Method of Circumferential Electrode Coil

摘要

A vacuum circuit breaker (10) includes a pair of detachable electrode assemblies (20,22) in a vacuum seal, each of the electrode assemblies having a contact (46) facing a contact of the other electrode assembly and a contact And an electrode coil assembly (40) positioned behind the contact (46) to generate a magnetic field within the electrode coil assembly (40). The electrode coil assembly 40 is activated by the AC current of the circuit breaker and includes a plurality of slots extending radially between the outer surface 52 and the inner surface 54 and defining a substantially circumferential current path And a generally annular member (42). The slot has an axially extending slot 56 and a circumferentially extending slot 60 which defines a coil 62 and a circumferential slot 60. The electrode coil member 42 is connected in series between the terminal posts 50 and the contacts 46 of the electrode coil assembly. The electrode coil assembly 40 also includes a tubular support 78 for the contacts 46.