发明授权
- 专利标题： Adjustable magnetic trip unit and a circuit breaker incorporating the same
- 专利标题（中）： 可调式磁力脱扣装置及其组合的断路器
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申请号： US10771671申请日： 2004-02-03
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公开(公告)号： US06788174B1公开(公告)日： 2004-09-07
- 发明人: Farhad Afshari , Arthur D. Carothers
- 申请人： Farhad Afshari , Arthur D. Carothers
- 主分类号： H01H7510
- IPC分类号： H01H7510
摘要：
The magnetic trip device of a circuit breaker has a magnetic pole in which a magnetic field is generated by load current, and an armature assembly that includes: a bracket supported for pivotal movement relative to the magnetic pole; a spring biasing the bracket to a position spaced from the magnetic pole; an armature hinged on the bracket; and an adjusting screw for adjusting a gap between the armature and the magnetic pole for calibrating the trip device without affecting the spring bias, which can be separately and independently adjusted to select the load current at which the magnetic trip is initiated.
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