Molded case circuit breaker braid conductor with strain relief

Details Molded case circuit breaker braid conductor with strain relief Molded case circuit breaker braid conductor with strain relief

1991-07-25

1992-06-30

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335172, 335167, H01H 7512

Patent

active

051267080

ABSTRACT:
A molded case circuit interrupter of the type employing a thermal-magnetic trip unit to interrupt circuit current utilizes a flexible electrical braid conductor to connect between the thermal-magnetic trip unit and the movable contact arm. A helical spring arranged around the braid conductor at the welded connection with the movable contact arm provides long-term strain relief. A metal phosphate coating on the surface of the circuit breaker operating cradle and latch assembly eliminates polishing while insuring release of the cradle from the cradle-latch interface surfaces.

REFERENCES:
patent: 3702387 (1972-11-01), Klein
patent: 4174563 (1979-11-01), Simpson
patent: 4583065 (1986-04-01), Favre-Tissot

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