Patent ID: 9704675
Date: 2017-07-11
CPC Classifications: H01H

Claim:
1. A contact module for a circuit breaker comprising: a base, a cover, an operation mechanism, at least three single-pole switches and a release mechanism, wherein the cover is mounted on the base to form an accommodation space, in which the operation mechanism, the at least three single-pole switches and the release mechanism are disposed; the operation mechanism is connected to one of the at least three single-pole switches, and the release mechanism is connected to the at least three single-pole switches; all of the at least three single-pole switches are asymmetrical, each single-pole switch comprises a strong side and a weak side; for each single-pole switch, a contact housing on the strong side is thick and is connected to a thick shaft, while a contact housing on the weak side is thin and is connected to a thin shaft; a rotor component in each single-pole switch only has a single contact spring and the single contact spring is mounted on the weak side; rotating shafts of adjacent single-pole switches are connected by a linkage shaft so that the single-pole switches are connected, and a strong side of one single-pole switch is connected to a weak side of another single-pole switch.