Thermally responsive switch

H - Electricity – 01 – H

Patent

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Details

H01H 37/04 (2006.01) H01H 37/30 (2006.01) H01H 37/54 (2006.01) H01H 37/76 (2006.01)

Patent

CA 2725640

A thermally responsive switch (1) includes a movable contact (30) fixed to an end of a thermally responsive plate (29) and a fixed contact (34) which is conductively connected with a conductive pin (22) through a conductor (33) having a fuse part (33B) and a heater part (33A) to constitute a pair of switching contacts with the movable contact (30). The thermally responsive switch (1) is used for disconnecting an AC current flowing to a motor (5) inside a sealed electric compressor (2). The fixed contact (34) is fixed to an electrically insulating ceramic member (32) disposed between the fixed contact (34) and a sealing container (19).

L'invention porte sur un interrupteur à actionnement thermique (1) qui comprend un contact mobile (30) fixé à l'autre extrémité d'une plaque à actionnement thermique (29) et un contact fixe (34) qui est connecté de façon conductrice à une broche conductrice (22) par l'intermédiaire d'un conducteur (33) comprenant une partie fusible (33B) et une partie chauffante (33A) afin de constituer une paire de contacts d'interrupteur avec le contact mobile (30). L'interrupteur à actionnement thermique (1) est utilisé pour déconnecter un courant alternatif circulant vers un moteur (5) à l'intérieur d'un compresseur électrique hermétique (2). Le contact fixe (34) est fixé à un élément céramique électriquement isolant (32) agencé entre le contact fixe (34) et un contenant hermétique (19).

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