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Patent Searching and Data


Title:
CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP2017220348
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To surely prevent a coil of an electromagnet in a voltage tripping part from being burned and also to facilitate operation of a voltage tripping function without using a dedicated switch for putting the electromagnet in the voltage tripping part to an off state.SOLUTION: A circuit breaker includes: a circuit breaking main body 2 for cutting off a current flow toward a load side when overcurrent, short circuit failure or the like occurs; a voltage tripping part 3 for causing the circuit breaking main body to trip by applying a command voltage; and a tripping interlock member 41 for interlocking tripping operation of the voltage tripping part as tripping operation of the circuit breaking main body. The voltage tripping part includes an electromagnet 25 having an electromagnetic coil 28 that generates electromagnetic force by applying a command voltage thereto, and tripping mechanisms 9, 10 and 11 for tripping the voltage tripping part when the electromagnet generates electromagnetic force, and further it is configured such that when the voltage tripping part trips, the application of the command voltage to the electromagnet is stopped.SELECTED DRAWING: Figure 3

Inventors:
CHEN LUNG
EMURA TAKESHI
Application Number:
JP2016113558A
Publication Date:
December 14, 2017
Filing Date:
June 07, 2016
Export Citation:
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Assignee:
FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO LTD
International Classes:
H01H73/36; H01H71/12
Attorney, Agent or Firm:
Ichi Hirose
Hide Tanaka Tetsu