Patent ID: 7936541
Filing Date: 2011-05-03
Classification: H01H

Abstract:
1. A transformer switch, comprising: a rotor configured to be selectively positioned in a first position and a second position, the first position corresponding to a closed state of a circuit of a transformer associated with the transformer switch, the second position corresponding to an open state of the circuit; a trip assembly comprising a rocker and a first magnet coupled to the rocker, the trip assembly configured to open the circuit upon a fault condition in the transformer by overcoming a force required to cause the rotor to move from the first position to the second position; overload means for increasing the force required to be overcome by the trip assembly to cause the rotor to move from the first position to the second position; and a Curie metal element, wherein the force required to be overcome comprising a magnetic force between the first magnet and the Curie metal element.