A contact system in a low-voltage switch and a low-voltage switch are provided. The contact system comprises a bifurcated contact and a movable contact. The bifurcated contact has an upper bifurcated end and a lower bifurcated end. Electrical contact portions are respectively arranged on insides of the upper bifurcated end and the lower bifurcated end. Electrical contact portions are respectively arranged on upper and lower surfaces of an execution end of the movable contact corresponding to the electrical contact portions of the bifurcated contact. When the contact system is switched on and powered up, electrodynamic repulsion forces produced at the electrical contact portions of the bifurcated contact are offset, so that the contact system can stably maintain an ON state, thereby improving a short-time current withstand capability of a low-voltage switch using the contact system. (FIG. 1)

An interrupter module (10) of a molded case circuit breaker (2) includes two stationary electrical contacts (20), and a blade carrier assembly (100) with a blade assembly (130) and a carrier (160) for the blade assembly. The blade assembly includes two conductive blades (140A, 140B). Each blade includes a movable electrical contact (150A, 150B) for engaging a corresponding stationary electrical contact in a closed position and for disengaging from the corresponding stationary electrical contact in an open position. Each blade has an independent over travel and contact force to maintain contact between the movable electrical contacts and corresponding stationary electrical contacts in the closed position.

The present invention relates to an air circuit breaker, in which a recess is formed on one side or each of both sides of each contact plate provided in an insulating cage so as to reduce a contact area between a movable contactor and the contact plate when the movable contactor and the contact plate are brought into contact with each other, thereby preventing a contact portion between the movable contactor and the contact plate from being melted due to heat generation.

A movable contact assembly for an electrical switching apparatus is provided. The movable contact assembly includes a number of shunts, and, a carriage assembly including two sidewalls and a contact arm assembly. The carriage assembly sidewalls are disposed in a spaced relation. The contact arm assembly includes a plurality of contact arms, a number of isolation members, a number of movable contacts, and an axle. Each contact arm defines an opening. One movable contact is disposed on each contact arm. Each contact arm is rotatably coupled to the axle with the axle extending through the contact arm opening. Each isolation member is disposed adjacent at least one contact arm. Each isolation member is coupled to, and in electrical communication with the adjacent contact arm. The shunts are coupled to, and in electrical communication with, the isolation members. In this configuration, no shunt operatively engages a contact arm.

Provided is a switch that can reliably bring contacts into contact with each other with a small load, and can be prevented from malfunctioning. A switch is provided with a plunger, a lower torsion spring in which a biasing direction changes according to the movement of the plunger. The lower torsion spring biases the plunger in an opposite direction to a returning direction when the plunger is in the operation position, and biases the plunger in a direction different from the opposite direction to the returning direction when the plunger is in the reference position.

An exemplary movable contact for an electric switch having a first contact blade and a second contact blade. Each of the first contact blade and the second contact blade includes an assembly hole. The movable contact having an assembly pin wherein the assembly pin includes a separation portion having a diameter greater than the assembly holes of the first and second contact blades thereby keeping the first and second contact blades separated from each other. The assembly pin includes a contact blade portion on each side of the separation portion for insertion to the assembly holes of the contact blades.

An exemplary movable contact for an electric switch having a first contact blade and a second contact blade. Each of the first contact blade and the second contact blade includes an assembly hole. The movable contact having an assembly pin wherein the assembly pin includes a separation portion having a diameter greater than the assembly holes of the first and second contact blades thereby keeping the first and second contact blades separated from each other. The assembly pin includes a contact blade portion on each side of the separation portion for insertion to the assembly holes of the contact blades.

A solid-state circuit breaker comprises an airgap operating mechanism including components and a housing that houses the components of the airgap operating mechanism such that each component in the operating mechanism is configured to operate in a way that only limited amount of space is required to achieve functions of ON, OFF, and TRIP. The components of the operating mechanism include a contact arm, a handle, and an interface feature to interface between the handle and the contact arm to apply a force thereon. The interface feature is configured to adjust the contact arm ensuring an optimal positioning. The components of the operating mechanism include a double pivot of the contact arm and a handle feature in that the contact arm has two-pivot legs, an armature, an armature pivot feature and a stopper feature, a cradle, and a stopper pin configured to stop the cradle during TRIP operation.

A movable contact assembly for an electrical switching apparatus is provided. The movable contact assembly includes a number of shunts, and, a carriage assembly including two sidewalls and a contact arm assembly. The carriage assembly sidewalls are disposed in a spaced relation. The contact arm assembly includes a plurality of contact arms, a number of isolation members, a number of movable contacts, and an axle. Each contact arm defines an opening, One movable contact is disposed on each contact arm. Each contact arm is rotatably coupled to the axle with the axle extending through the contact arm opening. Each isolation member is disposed adjacent at least one contact arm. Each isolation member is coupled to, and in electrical communication with the adjacent contact arm. The shunts are coupled to, and in electrical communication with, the isolation members. In this configuration, no shunt operatively engages a contact arm.

A movable contact assembly for an electrical switching apparatus is provided. The movable contact assembly includes a number of shunts, and, a carriage assembly including two sidewalls and a contact arm assembly. The carriage assembly sidewalls are disposed in a spaced relation. The contact arm assembly includes a plurality of contact arms, a number of isolation members, a number of movable contacts, and an axle. Each contact arm defines an opening. One movable contact is disposed on each contact arm. Each contact arm is rotatably coupled to the axle with the axle extending through the contact arm opening. Each isolation member is disposed adjacent at least one contact arm. Each isolation member is coupled to, and in electrical communication with the adjacent contact arm. The shunts are coupled to, and in electrical communication with, the isolation members. In this configuration, no shunt operatively engages a contact arm.