H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 71/16 (2006.01) H01H 71/08 (2006.01) H01H 71/40 (2006.01)
Patent
CA 2316583
A circuit interrupter including a housing, separable main contacts disposed in the housing, and an operating mechanism disposed in the housing and interconnected with the contacts. A trip mechanism is disposed in the housing and has an automatic trip assembly that selectively generates a tripping operation which opens the contacts upon a predetermined current threshold. The automatic trip assembly includes a substantially planar bimetal, an electrical terminal, and a magnetic yoke. The bimetal has a first cutout region and a second cutout region on opposite sides thereof which form a neck portion and define a head portion. The head portion is connected to an end of the terminal. The magnetic yoke has a substantially planar portion and two arm portions. The bimetal is positioned substantially parallel with the planar portion with the neck portion positioned between the arm portions. The first cutout region terminates approximately just below the arm portions, and the second cutout region is longer than the first cutout region and terminates farther below the arm portions. The bimetal also includes rounded inner corners between the neck portion and the head portion.
Gundy Raymond P.
Hood Teresa I.
Juds Mark A.
Bereskin & Parr
Corporation Eaton
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