EP 0164276 B1 19870909 - ELECTRICAL COMMUTATION APPLIANCE COMPRISING A GAS-PROOF CONTACT PROTECTING COVER
Title (en)
ELECTRICAL COMMUTATION APPLIANCE COMPRISING A GAS-PROOF CONTACT PROTECTING COVER
Publication
Application
Priority
FR 8404826 A 19840328
Abstract (en)
[origin: US4638275A] An electric switching unit for preventing oxidation of copper-base contacts in contactors comprises a body (2), comprises an electromagnet (11) having a stationary yoke (7) and a moving armature (15) in cooperating relation with a plurality of switches (36). A protective casing (42) is fixed on the body so as to contain the switches. The contact-studs (30, 31, 32, 33) of the switches (36) essentially have a base of cuprous materials while a non-oxidizing atmosphere is confined and maintained beneath the protective casing (42) by seals (55, 23, 47). The seals are placed on the one hand between the moving armature (15) and a first face (21) of the body (2) and on the other hand between the casing (42) and a second face (41) of the body which is opposite to the first face.
IPC 1-7
IPC 8 full level
H01H 50/54 (2006.01); H01H 1/66 (2006.01); H01H 9/04 (2006.01); H01H 50/22 (2006.01)
CPC (source: EP US)
H01H 1/66 (2013.01 - EP US); H01H 9/04 (2013.01 - EP US); H01H 50/22 (2013.01 - EP US); H01H 2050/025 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT SE
DOCDB simple family (publication)
FR 2562321 A1 19851004; FR 2562321 B1 19860801; DE 164276 T1 19860410; DE 3560612 D1 19871015; EP 0164276 A1 19851211; EP 0164276 B1 19870909; JP H0527933 B2 19930422; JP S60236428 A 19851125; US 4638275 A 19870120
DOCDB simple family (application)
FR 8404826 A 19840328; DE 3560612 T 19850308; DE 85400449 T 19850308; EP 85400449 A 19850308; JP 6219485 A 19850328; US 71492885 A 19850322