Patent ID: 7345569
Filing Date: 2008-03-18
Classification: H01H

Abstract:
1. A protection device comprising: a bi-metallic plate having a first end fixed to a first terminal and a second end of the bi-metallic plate being a free end which has a first contact point connected to an underside thereof; a carrier having a second contact point connected on a first end thereof and the second contact point located beneath the first contact point, the carrier being clamped between two positioning members with a second end of the carrier and one of the positioning members forming a gap; and a contact plate having a first end being in contact with a second terminal and a second end of the contact plate being forced to be connected to the second end of the carrier by a breakable piece which supports the second end of the contact plate in the gap, wherein the breakable piece melts or collapses to separate the second end of the contact plate and the carrier when the protection device is overloaded.