Electronic trip unit conversion kit for high ampere-rated circui

Details Electronic trip unit conversion kit for high ampere-rated circui Electronic trip unit conversion kit for high ampere-rated circui

1996-03-29

1997-12-23

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Plural magnets or flux sources

335 23, 335172, 335167, H01H 900

Patent

active

057011117

ABSTRACT:
A field-installable circuit breaker trip actuator unit includes a flux shifter unit that interfaces with the circuit breaker operating mechanism and is installable without dismantling the circuit breaker components. The flux shifter unit responds to an electronic trip unit to articulate the circuit breaker operating mechanism and separate the circuit breaker contacts upon occurrence of an overcurrent condition. A reset arrangement allows the trip actuator unit to be automatically reset upon completion of the contact separation process.

REFERENCES:
patent: 3073936 (1963-01-01), Baird
patent: 3761778 (1973-09-01), Willard
patent: 4672501 (1987-06-01), Bilac et al.
patent: 4931758 (1990-06-01), Bagalini
patent: 5006826 (1991-04-01), Knoben et al.
patent: 5453724 (1995-09-01), Seymour et al.
U.S. application No. 08/551,640, Castonguay & Lord, filed Nov. 1, 1995.

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