Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Patent
1996-07-26
1998-05-26
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
337104, 337333, 337380, 361105, H01H 3714, H02H 504
Patent
active
057572615
ABSTRACT:
A temperature controller 10 comprises a bimetallic switching device 35 which switches at an excess temperature to protect an electrical device. The bimetallic switching device is accommodated in a housing 12 which has an electrically conductive base and an electrically conductive cover to close this. The cover and the base are connected by an insulation. A first electrical component 17 is connected in series between terminals of the temperature controller at least when the bimetallic switching device is open. A second electrical component 25 being arranged on the bottom of the base is also provided for the bimetallic switching device. The second electrical component 25 is connected in series with the bimetallic switching device 35 between the terminals 37, 39 of the temperature controller 35 at least when the bimetallic switching device 35 is closed. The first electrical component is a he a ting resistor R.sub.H or an insulator 41 with a comparable mechanical construction. The second component 25 is a protective resistor R.sub.V or a short-circuit part 43 with a comparable mechanical construction, so that temperature controllers with purely overheating protection, overheating protection with self-locking function, overheating protection with current sensitivity and overheating protection with self-locking function and current sensitivity can be provided with the same mechanical construction.
REFERENCES:
patent: 5367279 (1994-11-01), Sakai
Becher Michael
Guttinger Edwin
Gandhi Jayprakash N.
Picard Leo P.
Thermik Geratebau GmbH
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