An electromechanical switch includes first and second stationary contacts and a movable contact. Each of the first and second stationary contacts has a respective protrusion at a mating end thereof. The movable contact defines a first depression and a second depression along a mating side thereof. The movable contact is reciprocally movable into and out of a closed position relative to the first and second stationary contacts. In the closed position, the mating side of the movable contact engages the mating ends of the first and second stationary contacts such that the protrusion of the first stationary contact projects into the first depression and the protrusion of the second stationary contact projects into the second depression.

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.

Provided is a drive structure for a high-voltage direct-current relay, the drive structure comprising: a retaining frame, a stopper piece, a movable spring piece, and an elastic member. The retaining frame comprises two retaining side arms, a support plate, and a drive rod. The two retaining side arms are disposed at two sides of the support plate, and the drive rod is connected to a bottom portion of the support plate. The stopper piece has one end connected to a terminal end of one of the retaining side arms, and the other end connected to a terminal end of the other retaining side arm. The elastic member has one end pressing against the support plate and the other end pressing against the movable spring piece, the movable spring piece presses against the stopper piece, and the stopper piece is provided with an arc isolation portion. The drive structure for a high-voltage direct-current relay has an bottom-up assembly manner, in which the elastic member, the movable spring piece, and the stopper piece are stacked sequentially, and the stopper piece is connected to and retained by the two retaining side arms, thereby realizing a simple and fast assembly process, and increasing assembly efficiency of high-voltage direct-current relays. In addition, the arc isolation portion has an effect of isolating arcs, thereby improving a service life of high-voltage direct-current relays despite reverse arcs.

A probe switching device comprising at least two switching switch assemblies and at least two probes, wherein each of the switching switch assemblies corresponds to each of the probes, each of the switching switch assemblies comprises a first switch component and a second switch component, the first switch component is provided with a force applying block, and the second switch component mainly consists of two fixed contactors and a bridge contactor, each of the probes corresponding to each of the switching switch assemblies is connected to one of the two fixed contactors. Thereby, the probe can be switched using the switching switch assembly without using a relay, the force applying block acts on the bridge contactor to connect the first switch component and the second switch component.

Methods, apparatuses and systems for providing a switching component are disclosed herein. An example switching component may include: a housing, a moveable carrier disposed within the housing, a set of moveable contacts, wherein a central body of the set of moveable contacts is disposed flush between a first surface of the moveable carrier and a second surface of the moveable carrier, and a set of stationary contacts adjacent the set of moveable contacts, wherein the set of moveable contacts is configured to move with a degree of freedom to make contact with the set of stationary contacts in order to actuate an electrical bridge in response to movement of the moveable carrier.

A probe switching device comprising at least two switching switch assemblies and at least two probes, wherein each of the switching switch assemblies corresponds to each of the probes, each of the switching switch assemblies comprises a first switch component and a second switch component, the first switch component is provided with a force applying block, and the second switch component mainly consists of two fixed contactors and a bridge contactor, each of the probes corresponding to each of the switching switch assemblies is connected to one of the two fixed contactors. Thereby, the probe can be switched using the switching switch assembly without using a relay, the force applying block acts on the bridge contactor to connect the first switch component and the second switch component.

A motor starter for operating an electric motor connected to a multiphase power supply includes a semiconductor switch arranged in a current-carrying phase of the multiphase power supply, and an electromechanical switch arranged in parallel relation to the semiconductor switch in the current-carrying phase. The electromechanical switch includes a movable switching piece configured tiltable to reduce a current gradient in the semiconductor switch.

An electromechanical switch includes first and second stationary contacts and a movable contact. Each of the first and second stationary contacts has a respective protrusion at a mating end thereof. The movable contact defines a first depression and a second depression along a mating side thereof. The movable contact is reciprocally movable into and out of a closed position relative to the first and second stationary contacts. In the closed position, the mating side of the movable contact engages the mating ends of the first and second stationary contacts such that the protrusion of the first stationary contact projects into the first depression and the protrusion of the second stationary contact projects into the second depression.

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.

A motor starter for operating an electric motor connected to a multiphase power supply includes a semiconductor switch arranged in a current-carrying phase of the multiphase power supply, and an electromechanical switch arranged in parallel relation to the semiconductor switch in the current-carrying phase. The electromechanical switch includes a movable switching piece configured tiltable to reduce a current gradient in the semiconductor switch.