Circuit breaker

Details Circuit breaker Circuit breaker

1997-07-29

1999-02-23

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335202, H01H 6702

Patent

active

058748776

ABSTRACT:
A circuit breaker with a completely electromagnetic type overcurrent tripping device has a flexibility for changes in the production schedule of the overcurrent tripping device. An overcurrent tripping device for each pole is integrally housed in a common unit case, which is then inserted into a case of the circuit breaker. In this case, a yoke of the overcurrent tripping device is combined with an oil dash pot inserted into a coil, and the combined parts are pressed and fixed in the unit case without soldering. Thus, the coil, which is changed depending on the rated current, and the yoke and oil dash pot which are common products, can be separately stored prior to assembly, thereby enabling flexible responses to changes in the production schedule. In addition, the yoke and the oil dash pot need not be soldered and are fixed individually to the unit case, thereby reducing the number of assembly operations.

REFERENCES:
patent: 5218332 (1993-06-01), Blanchard et al.
patent: 5231365 (1993-07-01), Kato
patent: 5576676 (1996-11-01), Koller et al.

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