Operating mechanism of a low voltage electric circuit breaker

Details Operating mechanism of a low voltage electric circuit breaker Operating mechanism of a low voltage electric circuit breaker

1982-05-11

1983-08-30

Marcus, Stephen

Electricity: circuit makers and breakers

Liquid contact

Time delay

200322, 335 26, H01H 354

Patent

active

044018720

ABSTRACT:
A multi-pole circuit breaker having a molded case and a contact operating mechanism supported in said case. The mechanism is controlled by a handle and a trip device. To obtain the reset of the trip hook when said trip device has opened the contacts, a rocker secured to the handle engages a drive lever forming an extension of the upper link of a toggle joint of said mechanism. The catch of the trip device is biased into an intermediate balanced locking position by means of a spring and is positioned onto a pivot pin by means of radial projection insides the bore of the catch which fits into a matching groove of the pin.

REFERENCES:
patent: 2795670 (1957-06-01), Cellerini et al.
patent: 3134879 (1964-05-01), Gauthier et al.
patent: 3426301 (1969-02-01), Bodge
patent: 3460075 (1969-08-01), Yorgin et al.
patent: 3525959 (1970-08-01), Ellsworth et al.
patent: 3603755 (1971-09-01), Ranzanigo
patent: 4129762 (1978-12-01), Bruchet
patent: 4165453 (1979-08-01), Hennemann
patent: 4278958 (1981-07-01), Kandatsu

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