EP 1115132 B1 20060809 - Pole for electrical circuit breaker with arc extinguishing chamber provided with dielectric shields
Title (en)
Pole for electrical circuit breaker with arc extinguishing chamber provided with dielectric shields
Title (de)
Pol für elektrischen Lastschalter mit Lichtbogenlöschkammer, versehen mit dielektrischen Schirmen
Title (fr)
Pôle pour disjoncteur électrique, muni d'une chambre d'extinction d'arc à écrans diélectriques
Publication
Application
Priority
FR 0000199 A 20000107
Abstract (en)
[origin: EP1115132A1] 2232 The commutator switch has a fixed contact, a movable contact and an associated arc extinction chamber. The moulded case encloses an operating mechanism (14) linked to that of the other poles by a transverse rotatable bar (16), coupled (54) in each unit to a moving contact assembly (60/64). When closed, this is forced by springs (52) against a fixed contact (28/30) assembly. Each assembly includes main current-carrying contacts, and an arcing contact, arranged to open slightly later than the latter when the circuit-breaker opens. The arc thus struck is centrally located in front of the arc extinction chamber (24). Contacts are connected to the unit's terminals along the underside of the case (20;49;40). The fixed arcing contact (30) is integral with an arcing plate (34) covering the insulated floor of the extinction chamber. A series of regularly spaced flat metal separators, parallel to this floor, is installed between this arcing plate and a top arcing plate (96), bent down (98) at the front to be close to (99) the moving arcing contact (60) when opening is complete. Separator front edges are alternately notched to left and right of center, the plates extending laterally and rearwards to the chamber sides and back, the latter perforated to relieve gas pressure. Insulating side-wings, e.g. of PTFE, restrict the chamber entry, much more at the top than near the bottom.
IPC 8 full level
H01H 33/08 (2006.01); H01H 9/34 (2006.01); H01H 9/46 (2006.01); H01H 33/20 (2006.01); H01H 73/18 (2006.01)
CPC (source: EP US)
H01H 9/34 (2013.01 - EP US); H01H 9/342 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
EP 1115132 A1 20010711; EP 1115132 B1 20060809; CN 1187774 C 20050202; CN 1304149 A 20010718; DE 60029919 D1 20060921; DE 60029919 T2 20070405; ES 2267482 T3 20070316; FR 2803686 A1 20010713; FR 2803686 B1 20020222; JP 2001216881 A 20010810; JP 4493859 B2 20100630; US 2001007318 A1 20010712; US 6348666 B2 20020219
DOCDB simple family (application)
EP 00410152 A 20001207; CN 01101371 A 20010103; DE 60029919 T 20001207; ES 00410152 T 20001207; FR 0000199 A 20000107; JP 2001001874 A 20010109; US 75505001 A 20010108