Circuit breaker

Details Circuit breaker Circuit breaker

H - Electricity

01

H

H01H 73/06 (2006.01) H01H 71/02 (2006.01) H01H 9/00 (2006.01)

Patent

CA 2370476

The invention relates to a circuit breaker having a crossbar (7) that is supported swingably onto a base (1B) to hold swingably movable contacts (4), and has the small reduction of overtravel in the elapsed years, and can reduce its size. The bending modulus of elasticity Eb, Ec of the base (1B) and the crossbar (7) at the ordinary temperature/ ordinary humidity satisfy following relationships. Eb+Ec>=17000 MPa ...(1) 8000 MPa<=Eb ...(2) 9000 MPa<=Ec ...(3)

L'invention concerne un disjoncteur comprenant un crossbar (7) supporté rotatif sur une base (1B) et maintenant rotatif un contacteur mobile (4), les dimensions pouvant être réduites tout en limitant la réduction sur la course avec le temps. Les modules de flexion Eb, Ec de la base (1B) et du crossbar (7) à une température et humidité normales satisfont aux relations suivantes: (1) (2) (3).

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