EP 0358288 A3 19910102 - CONTACT ARRANGEMENT FOR A POWER CIRCUIT BREAKER WITH AUXILIARY AND MAIN CONTACTS
Title (en)
CONTACT ARRANGEMENT FOR A POWER CIRCUIT BREAKER WITH AUXILIARY AND MAIN CONTACTS
Publication
Application
Priority
US 24209488 A 19880908
Abstract (en)
[origin: JPH02117022A] PURPOSE: To prevent the damage by an arc from between contacts by providing such a structure as pressing the arc so as to leave contact members by the magnetic field adjacent to the contact members. CONSTITUTION: In order to open and close main contacts 10, 12, a rotating contact part 14 and a movable contact blade 24 are provided, and the blade 24 is formed so that a substantially U-shaped current loop 26 is present in the blade 24 near the main contacts 10, 12, the blade 24 has a notch 27 on the lower surface of the blade 24 adjacent to the contact 10 and a recessed part 30 on the upper surface of the blade 24, the dimension of the recessed part 30 can be changed on the basis of the required strength of the blade 24 and the parallel degree required for the legs 28, 29 of the U-shaped current loop 6. Thus, a magnetic field for pressing an arc from between the main contacts 10, 12 to secondary contacts 18, 20 on an arc hone 22 can be created.
IPC 1-7
IPC 8 full level
H01H 33/12 (2006.01); H01H 9/38 (2006.01); H01H 33/42 (2006.01); H01H 9/44 (2006.01)
CPC (source: EP US)
H01H 9/383 (2013.01 - EP US); H01H 9/44 (2013.01 - EP US)
Citation (search report)
- [Y] FR 1544437 A 19681031 - LICENTIA GMBH
- [Y] EP 0206882 A1 19861230 - MERLIN GERIN [FR]
- [A] FR 1100811 A 19550926 - VOIGT & HAEFFNER AG
- [AD] US 2777921 A 19570115 - ANDRE LATOUR
- [AD] US 3192344 A 19650629 - COLE THOMAS M
- [AD] EP 0222684 A1 19870520 - SIEMENS AG [DE]
- [AD] CH 531785 A 19721215 - WESTINGHOUSE ELECTRIC CORP [US]
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0358288 A2 19900314; EP 0358288 A3 19910102; EP 0358288 B1 19950308; CA 1333183 C 19941122; DE 58909080 D1 19950413; JP H02117022 A 19900501; US 4926018 A 19900515
DOCDB simple family (application)
EP 89250028 A 19890907; CA 610424 A 19890906; DE 58909080 T 19890907; JP 23026289 A 19890904; US 24209488 A 19880908