An example polarity inverter includes multiple contactors, each of which includes switches that are controllable to configure a current path. Each of the multiple contactors includes contacts, which are interleaved such that first contacts to receive voltage having a first polarity alternate with second contacts to receive voltage having a second polarity, where the first polarity and the second polarity are different. The polarity inverter also includes a first conductive plate to connect electrically to each of the first contacts, and a second conductive plate to connect electrically to each of the second contacts. The first conductive plate and the second conductive plate are in parallel. A dielectric material is between the first conductive plate and the second conductive plate.

A disc member is for a Thomson coil actuator of an electrical switching apparatus. The Thomson coil actuator has at least one generally planar coil. The disc member includes at least one annular-shaped conductive member structured to be driven by the coil, and a structural support member directly coupled to the conductive member.

Embodiments of the disclosure provide for a system and method for determining a circuit breaker position in a power distribution/load center. In one embodiment, the load center includes a plurality of circuit breakers. Each circuit breaker includes a base and a plurality of contact components coupled to the base. In that regard, an activation of a combination of the contact components indicates a position of the circuit breaker within the load center. The activation of the combination indicates that one or more of the contact components is in contact with one or more pegs coupled to the load center. When this occurs, a data transceiver coupled to each of the contact components transmits a data signal. The data signal includes a plurality of data bits, where each data bit indicates whether a corresponding contact component of the combination is activated or not activated.

A direct current interrupting switch assembly comprising a primary conductor and a secondary conductor integrated with a direct voltage source and a load. The primary conductor of the switch assembly has two branches, the first branch including a fuse with a melting member and the second branch including a pyroswitch with an interrupting member. In a first position, the second branch of the primary conductor is uninterrupted, and the interrupting member is a sufficient distance apart from the secondary conductor. When the interrupting member is moved to a second position, the current in second branch of the primary conductor is interrupted and the interrupting member contacts the secondary conductor of the switch assembly.

A breaker includes a stationary contact, a movable contact, an operation device including a link portion liked to the movable contact and including an output lever rotatably supported, the operation device operating rotation of the output lever in accordance with a first control signal for a command for pulling out the movable contact and a second control signal for a command for inserting the movable contact, and an auxiliary contact to switch between turn-on and turn-off of an input of the first control signal and the second control signal to the operation device in conjunction with operation of the output lever, the auxiliary contact being able to be used in a circuit configuration to monitor a state of the operation device. The output lever rotates so as to operate a first link portion on a side toward a first direction with respect to a rotational center of the output lever.

An electrical disconnecting device comprising a housing, a first terminal lug (4a) inserted into the housing, a second terminal lug (4b) inserted into the housing, a current path forming between the first and second terminal lugs (4a, 4b) in a closed state, a separation point (6) spatially located between the terminal lugs, the separation point (6) disconnecting the current path between the terminal lugs (4a, 4b) in the separated state, a actuator (8) influencing a separation of the separation point (6), a channel formed in the housing between the actuator (8) and the separation point (6), the actuator closing the channel on a side facing away from the separation point, and a connecting element which is arranged on the side of the actuator facing away from the channel and accommodates at least two electrical connections of the actuator, characterized in that the connecting element accommodates at least two contact elements of a switching path, in that the contact elements are each guided into the channel via connecting webs and are short-circuited to one another in the channel at a connecting point in such a way that, when the actuator is triggered, the connecting point is moved away from the contact elements, so that the connecting webs are mechanically disconnected.

The invention relates to a switch having a switch housing, a number of module-type individual interrupter chambers which can be arranged in particular side by side in the switch housing and having at least two switching contact elements, and an actuating device which closes off the switch housing above the individual interrupter chambers. This actuating device serves to adjust a cam element for the selective establishment of an electrical connection between the switching contact elements of an individual interrupter chamber. The switching contact elements can be arranged in at least two different orientations in each individual interrupter chamber in an explosion-protected manner. Furthermore, in particular the cam element of the actuating device can be arranged differently depending on the orientation of the switching contact elements. This results in a switch with a simple adaptation option for housing installation or front-panel mounting, wherein all requirements for explosion protection are also fulfilled at the same time.

The emergency stop switch unit 2 as an operation switch unit includes a direct operation part 20A and an alternative operation part 20B. The direct operation part 20A has an emergency stop button 21 adapted to be directly operated. The alternative operation part 20B is adapted to be linked with the direct operation part 20A and alternatively operates the emergency stop button 21 in place of the direct operation part 20A. The alternative operation part 20B has a reception part 32 that detects a remote operation of the emergency stop button 21 and an electromagnetic solenoid 3 that actuates the emergency stop button 21 on the basis of the remote operation detected by the reception part 32.

An apparatus includes a circuit breaker having main contacts configured to be coupled within an electrical line. The circuit breaker also has trip contacts and auxiliary contacts. A protection relay is electrically coupled to the trip contacts of the circuit breaker and is configured to trip the circuit breaker. A trip circuit supervision relay has a first coil electrically coupled to the auxiliary contacts of the circuit breaker and a second coil electrically coupled to the trip contacts of the circuit breaker. The first coil and the second coil are magnetically coupled to each other. The trip circuit supervision relay is single circuit supervision relay that includes both first coil and the second coil and is configured to be magnetically operated by either of the first coil and the second coil.

In an embodiment a switching device includes two fixed contacts and a rotary contact bridge in a switching chamber in a gas-tight region, wherein the rotary contact bridge is rotatable about an rotation axis, wherein, in a first switching state, the fixed contacts are electrically conductively connected by the rotary contact bridge, wherein, in a second switching state, the rotary contact bridge is rotatable about the rotation axis relative to the first switching state, and the fixed contacts are electrically insulated from one another, and wherein the gas-tight region includes H.sub.2.