DISPOSITIF D'ETABLISSEMENT ET/OU DE COUPURE DE COURANT A CONTACTS PERMANENTS A USURE REDUITE

DISPOSITIF D'ETABLISSEMENT ET/OU DE COUPURE DE COURANT A CONTACTS PERMANENTS A USURE REDUITE

Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end o...

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Hauptverfasser: AITKEN OANA, FNINECHE CHAKIB
Format: Patent
Sprache:fre
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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creator AITKEN OANA
FNINECHE CHAKIB
description Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), designed to be in mechanical and electrical contact with the other permanent contact (4, 3) only during an operation for opening or closing the pair. The end protection portion (3.2, 4.2) is made of a single transition metal having a melting temperature that is strictly higher than that of the main portion (3.1, 4.1) to which it is secured, or of an oxide or carbide of such a metal, or even of zinc oxide. For application in particular to high- or medium-voltage circuit breakers.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
title DISPOSITIF D'ETABLISSEMENT ET/OU DE COUPURE DE COURANT A CONTACTS PERMANENTS A USURE REDUITE
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