Cicruit breaker

A circuit breaker comprises first and second spring biased movable contacts 33x, (33y, Fig 1) engageable with respective fixed contacts 31x, (31y) and a link 48 connecting the movable contacts together for ganged movement. The link 48 has two legs, one of which 48a is coupled to an operating handle...

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Bibliographic Details
Main Authors TAKASHI KITAMURA, HIROFUMI KONISHI, YOICHI KUNIMOTO, TOMOYUKI SAWADA, YOICHI YOKOYAMA
Format Patent
LanguageEnglish
Published 23.07.1999
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:A circuit breaker comprises first and second spring biased movable contacts 33x, (33y, Fig 1) engageable with respective fixed contacts 31x, (31y) and a link 48 connecting the movable contacts together for ganged movement. The link 48 has two legs, one of which 48a is coupled to an operating handle 41 and the other of which 48b is coupled to the first movable contact 33x and to the lower end of a pivotable member (121) carrying the second movable contact (33y). The upper end of the contact carrier (121) is pivotable about an axis parallel to the other leg 48b of the link 48. In response to a leakage current detected by a current transformer (92), an electromagnetic actuator (100) is operated to trip the circuit breaker and to move an indicator (133) against the bias of a spring (134) to an actuation indicating position in which it is held by a latch (131).
Bibliography:Application Number: HK19980112993