A circuit breaker

H - Electricity – 01 – H

Patent

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Details

H01H 71/74 (2006.01) H01H 71/02 (2006.01)

Patent

CA 2181727

A circuit breaker (1) includes an upper rail mounting device (26) defined by a line terminal (2) having a pair of spaced-apart jaws (31, 32). A bimetal (10) is adjusted by means of a calibration screw (12). An aperture (30) is provided in an upper sidewall portion (24a) of a base (20) of the circuit breaker for access to the screw (12) by a calibration device (35). The aperture (30) is positioned so that the calibration device (35) must pass through the jaws (31, 32) of the upper rail mounting device (26). This ensures that the calibration screw (12) can only be operated when the circuit breaker is disconnected from an electrical supply.

Disjoncteur (1) comprenant un dispositif supérieur de montage (26) délimité par une borne de conducteur (2) munie d'une paire de mâchoires (31, 32) écartées l'une de l'autre. Une bilame (10) est réglée au moyen d'une vis de réglage (12). Une ouverture (30) est prévue dans une partie supérieure (24a) de la paroi latérale du support (20) du disjoncteur afin de permettre à un dispositif de réglage (35) d'atteindre ladite vis (12). L'emplacement de l'ouverture (30) est tel que le dispositif de réglage (35) doit passer entre les mâchoires (31, 32) du dispositif supérieur de montage (26). Par conséquent, l'actionnement de la vis de réglage (12) n'est possible que lorsque le disjoncteur est déconnecté d'une alimentation électrique.

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