Patent ID: 6020802
Filing Date: 2000-02-01
Classification: H01H

Abstract:
A circuit breaker for interrupting the flow of electric current in a line comprising:a switch connected in series with the line, the switch having an open position and a closed position;at least one positive temperature coefficient resistivity element (PTC element) connected in series with the line;a yoke;a first magnetic coil positioned around the yoke and connected in parallel with the PTC element;a second magnetic coil positioned around the yoke and connected in series with the line and the switch, providing a direct line current path for the circuit breaker;a voltage limiting device connected in parallel with the at least one PTC element;an armature pivotally mounted in relation to the yoke wherein the yoke and the armature form a magnetic circuit with the first magnetic coil and the second magnetic coil; anda trip lever connected to the armature and the switch, the trip lever effecting movement of the switch from a closed position to an open position wherein the flow of electric current in the line is interrupted.