Patent ID: 7026906

Claim:
A circuit breaker comprising: a housing composed of two correspondingly assembled cases, wherein a first conductive plate and a second conductive plate are retained inside the housing, and a first end of each conductive plate is protruding from a bottom of the housing; a bimetallic strip placed in the housing and secured to the first conductive plate, wherein a movable node is provided at a second end of the bimetallic strip to electrically contact with the second conductive plate; a swing plate having a notch, wherein the swing plate is pivotally attached inside the housing and connected at the second end of the bimetallic strip near the movable node; and a switch having bottom from which a pivot block extends in the notch of the swing plate, wherein the switch is pivotally mounted on a top of the housing to place the circuit breaker in an open circuit mode in which said movable node and immovable node are separated from each other and a closed circuit mode in which said movable node and immovable node contact each other; wherein when current flow through the bimetallic strip exceeds a predetermined level, said bimetallic strip deforms to disconnect said movable node and immovable node thus placing the switch in the open circuit mode.