Title:
回路遮断器の外部付属スイッチユニット
Document Type and Number:
Japanese Patent JP4093149
Kind Code:
B2
Abstract:
An external auxiliary switching unit includes a unit case, an auxiliary contact mechanism having contacts to be opened and closed in response to on/off operations of a circuit breaker, and an alarm contact mechanism operating in response to a tripping operation of the circuit breaker. An operating arm extends from a contact holder of the alarm contact mechanism and protrudes sideward from the unit case. The operating arm is inserted into a breaker housing when the auxiliary switching unit is mounted onto the circuit breaker. When the alarm output plate rotates upon tripping of the circuit breaker, the alarm output plate is released from the operating arm to detect the tripping and output an alarm signal. After the tripping, the circuit breaker is reset to cause the alarm contact mechanism to return to the non-detecting position via the alarm output plate, thereby stopping the alarm signal.
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Inventors:
Takeshi Emura
Yoshinobu Hamada
Kuboyama Katsunori
Yoshinobu Hamada
Kuboyama Katsunori
Application Number:
JP2003313032A
Publication Date:
June 04, 2008
Filing Date:
September 04, 2003
Export Citation:
Assignee:
Fuji Electric Equipment Control Co., Ltd.
International Classes:
H01H73/02; H01H71/46; H01H73/12
Domestic Patent References:
| JP9265890A | ||||
| JP2001297680A | ||||
| JP2002170473A |
Attorney, Agent or Firm:
Hiroshi Yamamoto