Circuit breaker with blow-open contact arm.,申请号EP20100006916-传众专利搜索

Circuit breaker with blow-open contact arm.

申请公布号：EP2228814(B1)

申请号：EP20100006916

申请日期：2006.01.12

申请公布日期：2016.05.04

申请人：

EATON CORPORATION

发明人：RAKUS, PAUL R.;PENDRICK, THOMAS C.;SHEA, JOHN J.;SCHULMAN, MICHAEL B.;CHIEN, YUN-KO N.;MILLER, JEFFREY A.;SISSON, GLEN C.

分类号：H01H77/10;H01H1/22;H01H83/00

主分类号：H01H77/10

摘要：A moving contact assembly for a high-current interruption electric power switching apparatus has an inner carrier for the contact fingers that is rigidly held in a withstand position in an outer carrier by a spring biased cam follower pin engaging a cam profile on the inner carrier and configured to positively seat an inner carrier stop against an outer carrier stop on the outer carrier and to rapidly drive the inner carrier to a blow open position in response to a fault. The cam profile has an extended width divided between spaced apart cam profile sections to absorb the high closing and withstand forces. An abutment on the outer carrier resists bowing of the cam follower pin between the cam profile sections. Complementary convex and concave partial cylindrical surfaces on the inner carrier and a gas shield on the moving assembly carrier body maintain an arc gas seal during blow open.