| 摘要 |
<p>A switching contact arrangement (4) of a low voltage circuit breaker (1) has a stationary contact assembly (10), comprising a main contact (21), a preliminary contact (22) and an arcing horn (23). Said preliminary contact (22) and said arcing horn (23) are formed by a uniform subassembly (11) which is configured as a punched, bent part consisting of a sheet material. The housing (2) in which the switching contact arrangement is located has a support wall (24) which the subassembly (11) adjoins with the sub-area that forms the preliminary contact (22). Said support wall (24) relieves the subassembly (11) of the stress caused by a movable contact assembly (12) during switching on.</p> |
