Abstract: A switching device comprising a first fixed contact, a second fixed contact, and a movable contact. The movable contact is mounted on a plunger configured to operate to change the state of the switching device from a closed state allowing current flow through the switching device to an open state which interrupts current flow through the switching device. The plunger is operable to move the movable contact between the open closed states in response to a magnetic field. The switching device further comprises a solenoid arranged to provide the magnetic field in response to an electrical signal. An arc chamber in included that housing the movable contact with arc chamber surfaces surrounding the moveable contact and having an arc suppressing material below the moveable contact.

Abstract: A manual disconnect switching device includes an external housing having a handle actuator. The manual disconnect switching device further includes a bellows actuator in communication with the handle actuator and hermetically sealed within an internal volume of the external housing. The bellows actuator includes a shaft and a biased bellows for switching the manual disconnect switching device between open and closed positions.

Abstract: Switching devices comprising a hermitically sealed switching modules with a core or housing structure that allow for the coil assembly to be mounted outside the hermitically sealed housing. This helps avoid some of the complex manufacturing and testing requirements necessary for conventional coil assemblies arranged inside the sealed housing. The present inventions also provides for improved and more reliable auxiliary switch arrangements, with some embodiments comprising an improved auxiliary arm and auxiliary carrier. The present invention also provides for an improved lunger or shaft structure that allows for operation at high voltage, with some embodiments comprising heat resistance and isolation components particularly arranged to accommodate high voltage operation.