Overload protector with overcurrent and over temperature protect

Details Overload protector with overcurrent and over temperature protect Overload protector with overcurrent and over temperature protect

1997-01-31

1999-04-27

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361105, 361 25, H02H 504

Patent

active

058985557

ABSTRACT:
A motor protector (1) for use in an electrical circuit for supplying current to a motor (10) to be protected having two separate bimetallic disk actuated switches (4, 5) contained within the protector (1) electrically connected in series with each other and the current source (13) and motor (10). In one embodiment, one of the two switches (6) uses a two bimetallic disk design in which the disks have different temperature actuations and reset values for providing a fail-safe feature.

REFERENCES:
patent: 5023744 (1991-06-01), Hofsass
patent: 5367279 (1994-11-01), Sakai
patent: 5497286 (1996-03-01), Shimada et al.
patent: 5515229 (1996-05-01), Takeda

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