Molded case circuit breaker bimetal with high calibration yield

Details Molded case circuit breaker bimetal with high calibration yield Molded case circuit breaker bimetal with high calibration yield

1987-10-29

1988-09-13

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

335 43, 335 45, 337 75, H01H 7116, H01H 7508

Patent

active

047712589

ABSTRACT:
A molded case circuit breaker bimetal trip unit arrangement substantially reduces the variation in trip characteristics between circuit breakers employing the improved bimetal. The number of circuit breakers failing the in-line calibration test is correspondingly substantially reduced.

REFERENCES:
patent: 2847532 (1958-08-01), Christensen et al.
patent: 2908782 (1959-10-01), Kiesel et al.
patent: 3599130 (1971-08-01), Murai et al.
patent: 4622530 (1986-11-01), Ciarcia et al.
patent: 4630019 (1986-12-01), Maier et al.
patent: 4679016 (1987-07-01), Ciarcia et al.

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