Temperature sensitive protection device for circuits

Details Temperature sensitive protection device for circuits Temperature sensitive protection device for circuits

2008-03-18

2008-03-18

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

C337S003000, C337S004000, C337S013000, C337S036000, C337S142000, C361S105000

Reexamination Certificate

active

11121257

ABSTRACT:
A protection device includes a bi-metallic plate electrically connected between the first and second terminals, and the bi-metallic plate is bent upward to separate two contact points when the protection device is overloaded to cut off the circuit. A contact plate has a first end in contact with the second terminal and a second end of the contact plate is forced to be connected to a second end of the carrier by a breakable piece that is made by low melting point metal. When the protection device is overloaded and the bi-metallic plate does not bend as expected, the breakable piece collapses or melts at a pre-set temperature to separate the second end of the contact plate and the carrier.

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