Circuit breaker trip solenoid assembly

Details Circuit breaker trip solenoid assembly Circuit breaker trip solenoid assembly

1986-10-24

1988-03-15

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

335 22, 335 58, H03H 700

Patent

active

047316926

ABSTRACT:
An electronic circuit breaker having a trip solenoid assembly. The trip solenoid assembly includes a permanent magnet, plunger, trip coil and assist coil and is positioned adjacent to a phase conductor. At high current levels the phase conductor generates a flux that may cause the circuit breaker to nuisance trip. An assist coil is wound adjacent the trip coil. The assist coil is energized only when the current through the circuit breaker is of such a level so as to cause nuisance tripping. The assist coil is not energized during that time period when the trip coil is energized.

REFERENCES:
patent: 4019097 (1977-04-01), Miller et al.
patent: 4085393 (1978-04-01), Grenier
patent: 4110717 (1978-08-01), Grenier
patent: 4213165 (1980-07-01), Zylstra et al.
patent: 4521823 (1985-06-01), Link

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