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Title:
MINIATURE CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2011/027120
Kind Code:
A3
Abstract:
A miniature circuit breaker (1) having a control unit (22) arranged to produce a trip signal to trigger a trip mechanism (20) into opening a pair of contacts (8,10) if it determines that an overcurrent condition occurs based on an output of a current sensor (23); an electric motor (25) operable to close the contacts via a contact closing mechanism (30a); a force transfer mechanism (70) arranged to transform a first trigger force into a second trigger force larger than the first trigger force, wherein the force transfer mechanism couples an electromechanical actuator (61) to a contact opening mechanism (30b) such that the second trigger force triggers the contact opening mechanism into opening the contacts; and/or a mechanical energy store (44, 46) arranged to accumulate mechanical energy from operation of the closing actuator (25) and subsequently to release accumulated mechanical energy to close the contacts.

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JPH0728675[Name of invention] A tripping device for a molded case circuit breaker
JP5905174The supporting structure and a switch using it
Inventors:
GANLEY SEAN CHRISTOPHER (GB)
STEVENS JOHN (GB)
Application Number:
PCT/GB2010/001669
Publication Date:
June 16, 2011
Filing Date:
September 03, 2010
Export Citation:
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Assignee:
EATON IND MFG GMBH (GB)
GANLEY SEAN CHRISTOPHER (GB)
STEVENS JOHN (GB)
International Classes:
H01H71/32; H01H71/12; H01H71/70
Foreign References:
US4679019A1987-07-07
EP0827251A21998-03-04
EP0880159A21998-11-25
EP1331658A12003-07-30
US20010022268A12001-09-20
US6218921B12001-04-17
Attorney, Agent or Firm:
LEACH, James et al. (33 Gutter Lane, London EC2V 8AS, GB)
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