An ESD protection device includes first and second discharge electrodes and a discharge auxiliary electrode that is electrically connected to the first and second discharge electrodes. The first and second discharge electrodes are located on or in an insulating substrate to at least partially face each other. The discharge auxiliary electrode includes first metal particles, second metal particles, and a binding agent. The first metal particles have a core-shell structure including a core section mainly including a first metal and a shell section which mainly includes an oxide of a second metal and which includes at least one portion with a cavity. The second metal particles have a core-shell structure including a core section mainly including the first metal and a shell section which mainly includes the oxide of the second metal and which has no cavity.

A method for producing a gas-tight metal-ceramic join is disclosed. In an embodiment a method includes providing at least one ceramic main body having a first end face and a second end face, applying a metallization to at least a partial region of the end faces of the main body, applying a nickel layer to the metallized partial region of the end faces, applying a brazing paste to the metallized partial region of the first end face and/or the second end face of the main body, drying the brazing paste, and firing the brazing paste.

A method for producing a gas-tight metal-ceramic join is disclosed. In an embodiment a method includes providing at least one ceramic main body having a first end face and a second end face, applying a metallization to at least a partial region of the end faces of the main body, applying a nickel layer to the metallized partial region of the end faces, applying a brazing paste to the metallized partial region of the first end face and/or the second end face of the main body, drying the brazing paste, and firing the brazing paste.

An arrester such as an arrester for protection against overvoltages is disclosed. In an embodiment an arrester includes a housing configured to act as an external electrode, a central electrode arranged completely within an inner region of the housing, a discharge region arranged between the central electrode and the housing, a ceramic body separating the housing and the central electrode, wherein the ceramic body is arranged in an offset manner relative to the discharge region and a shielding element arranged on an inside of the housing, and wherein the shielding element extends over an entire longitudinal extent of the central electrode along the inside of the housing.

Systems, methods, and devices, for forming and using an arc flash mitigation switch are provided. In one exemplary embodiment, an arc flash mitigation switch includes a cylindrical shell having a first end cap and a second end cap located at either end of the cylindrical shell. A first and second conductive feed through extend through the first and second end cap, respectively, at one end, and at the other connect to a first and second electrode separated by a gap. The exemplary arc flash mitigation switch further includes a trigger feed through that receives a trigger current that commutates the external arc flash event into the arc flash mitigation switch, quenching the external hazard.

Systems, methods, and devices, for forming and using an arc flash mitigation switch are provided. In one exemplary embodiment, an arc flash mitigation switch includes a cylindrical shell having a first end cap and a second end cap located at either end of the cylindrical shell. A first and second conductive feed through extend through the first and second end cap, respectively, at one end, and at the other connect to a first and second electrode separated by a gap. The exemplary arc flash mitigation switch further includes a trigger feed through that receives a trigger current that commutates the external arc flash event into the arc flash mitigation switch, quenching the external hazard.

High voltage high power pulsed power switches relating to a laser triggered multi-stage vacuum switch. The laser triggered multi-stage vacuum switch has laser triggered vacuum gap, multi-stage self-breakdown vacuum gaps and trigger system. Multi-stage self-breakdown vacuum gaps are fixed on the top of laser triggered vacuum gap by connector. The grading ring is sheathed outside of upper insulation shell. By adopting the series connected laser triggered vacuum gap and multi-stage self-breakdown vacuum gaps, with the synergy of two type vacuum gaps, application of laser triggered multi-stage vacuum switch in the high voltage, high power, high repetitive frequency pulsed power system can be realized. With multiple laser beams shot onto multiple targets, more initial plasma can be generated as the irradiation area of laser on target surfaces is enlarged, and the trigger performances of laser triggered multi-stage vacuum switch can be enhanced.

Systems, methods, and devices, for forming and using an arc flash mitigation switch are provided. In one exemplary embodiment, an arc flash mitigation switch includes a cylindrical shell having a first end cap and a second end cap located at either end of the cylindrical shell. A first and second conductive feed through extend through the first and second end cap, respectively, at one end, and at the other connect to a first and second electrode separated by a gap. The exemplary arc flash mitigation switch further includes a trigger feed through that receives a trigger current that commutates the external arc flash event into the arc flash mitigation switch, quenching the external hazard.

A method is provided for manufacturing a plurality of arresters as a composite structure. A ceramic carrier having a plurality of holes and two electrode bodies are provided. The ceramic carrier and the two electrode bodies are assembled into a base under gas atmosphere. The ceramic carrier is located between the electrode bodies. The electrode bodies are soldered to the ceramic carrier. The base body is separated into a plurality of gas-filled arresters is carried out. In addition, a gas-filled arrester is provided which has a height of maximal 2 mm and electrode surfaces of maximal 1.21.2 mm.sup.2.

An arc quenching device includes a frame, at least one controlled-arcing device supported by the frame, and at least one contact assembly supported by the frame and electrically connected to the at least one controlled-arcing device. The device further includes a racking mechanism supported by the frame and including a motor and at least one actuator member driven by the motor and configured to engage a feature in an electrical equipment unit compartment to move the arc quenching device within the compartment and engage the at least one contact assembly with a bus of the electrical equipment unit. The arc quenching device may be configured to be installed in a cassette in the electrical equipment unit and the actuator member may be configured to engage a feature of the cassette.