Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CIRCUIT BREAKER FOR RAPIDLY BREAKING LOW VOLTAGE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2008/049336
Kind Code:
A1
Abstract:
A circuit breaker for rapidly breaking low voltage circuit. The circuit breaker drives with expulsive force to cut off an execution unit rapidly to realize overload and short circuit protection. The circuit breaker includes a plastic casing, a moving contact, a static contact, an explosion chamber, an operating mechanism for breaking and closing the circuit, and a release mechanism for controlling tripping. The circuit breaker further includes an execution unit that can realize rapid breaking and current limiting. The execution unit has a passive part and an active part. When the current passing though the moving contact and the static contact exceeds a predetermined threshold, the expulsive force caused by the current drives the moving contact and the static contact to detach from each other. The detachment action directly drives the passive part and the active part, wherein the action of the active part causes a release lever to release, thereby directly driving the circuit breaker to trip.

Inventors:
XIE DONGWEN (CN)
Application Number:
CN2007/003032
Publication Date:
May 02, 2008
Filing Date:
October 24, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZHEJIANG CHINT ELECTRICS CO LT (CN)
XIE DONGWEN (CN)
International Classes:
H01H3/00
Foreign References:
US6069544A2000-05-30
US5082996A1992-01-21
CN1601687A2005-03-30
Attorney, Agent or Firm:
KING & WOOD PRC LAWYERS (Office Tower A 39 Dongsanhuan Zhonglu, Chaoyang District, Beijing 2, CN)
Download PDF: