Embodiment herein provide a vacuum Load break switch comprising a tank (Metallic or non-metallic) (1), an interruption system (2) enclosed in the tank (1), a drive lever (3) connected to the interruption system (2), a leak proof system (4) with multiple O-Rings connected to the interruption system (2), and a source side connector (5) and a load side connector (6) connected to the interruption system (2). During an open operation, a current inside the vacuum interruption system (2) is interrupted to move the interruption system (2) and create an isolation distance. Further, during a close operation, the vacuum interruption system (2) moves to make the isolation distance zero and then the current flow is started inside vacuum interruption system (2).

Explosion-proof pressure-resistant housing with a receiving part for electric operating components and with a closure part that closes the receiving part via a bayonet catch, wherein the closure part has a cylindrical segment that forms a flameproof joint when inserted into the receiving part, the cylindrical segment of the closure part has pins and the cylindrical outer wall of the receiving part contains longitudinal slots, at the ends of which longitudinal slots short transverse slots connect for receiving the pins, where a locking part is slid onto the closure part and includes locking elements distributed across the periphery and engaging in the longitudinal slots such that the pins are prevented from rotating out of the transverse slots, and where the locking part is fastened to the closure part via at least one fastener that detachable exclusively via a tool.

A switch device includes at least one switch module and at least one welding protective plate. The switch module includes an enclosure for receiving a plurality of control terminals and a driving member therein. The control terminals respectively have an end projected from an end or a rear side of the enclosure. The driving member is controllable to change an electrically connected or disconnected state between the control terminals. The welding protective plate is provided on the enclosure at the end from where the control terminals are projected. The projected control terminals further extend through the welding protective plate to be welded to a circuit board. The welding protective plate can withstand a high temperature and is located between the switch module and the circuit board to form a thermal insulation and protection mechanism, protecting the switch module from external deformation and inner damage by the high temperature during welding.

An operating element for finger operation, which has an improved tightness against the ingress of dust and water with simultaneously increased degree of freedom of movement is provided. The operating element includes a thumbwheel, wherein the thumbwheel as an operating lever, which can be rotated about at least one first axis of rotation, a mounting box, wherein a point of intersection of the first axis of rotation with the thumbwheel is formed within the mounting box, as well as an integral sealing system having at least one seal. The sealing system and mounting box can be connected by a two-component injection molding. The mounting box has injection channels for injecting a material of the sealing system, in which corresponding injection channel connections of the sealing system are formed. The seals are connected to one another via the injection channel connections, and wherein a seal partially surrounds the operating lever.

An electrical fuse assembly includes a housing defining a hermetically sealed chamber, first and second terminal electrodes mounted on the housing, a gas contained in the hermetically sealed chamber, a fuse element electrically connecting the first and second terminal electrodes, and at least one spark gap between the first and second terminal electrodes. The fuse element and the at least one spark gap are disposed in the hermetically sealed chamber.

Compliant electrical circuit protection devices are described for use in hazardous environments without presenting ignition risks for potentially explosive environmental conditions. Sensing features and systems may evaluate wiring limits and user selected settings for compatibility, detect loose connections and operating parameters to ensure safe operation of the device, and to intelligently diagnose and manage issues of concern for the circuit protection devices as well as the larger electrical power system.

A switch device includes an operating knob to receive an operation for a device to be controlled, a first detection electrode portion that is attached to the operating knob and detects a first operation position on the operating knob based on capacitance, a second detection electrode portion that is attached to the operating knob at a distance from the first detection electrode portion and detects a second operation position on the operating knob based on capacitance, a control unit to control the device to be controlled in accordance with the operation position detected by the first detection electrode portion and the second detection electrode portion, and a water droplet adhesion suppressing portion to suppress water droplet adhesion between the first detection electrode portion and the second detection electrode portion.

A switch device includes an operating knob to receive an operation for a device to be controlled, a first detection electrode portion that is attached to the operating knob and detects a first operation position on the operating knob based on capacitance, a second detection electrode portion that is attached to the operating knob at a distance from the first detection electrode portion and detects a second operation position on the operating knob based on capacitance, a control unit to control the device to be controlled in accordance with the operation position detected by the first detection electrode portion and the second detection electrode portion, and a water droplet adhesion suppressing portion to suppress water droplet adhesion between the first detection electrode portion and the second detection electrode portion.

A sensor and an electronic device are provided. The sensor includes a setting part and a seal ring in an annular shape. The setting part changes a setting of a sensor main body. The seal ring is provided to surround a shaft of the setting part and seals a gap between the shaft and a housing. The seal ring has a curved surface part and a pair of end parts. The curved surface part is curved convexly in a cross-sectional view. The pair of end parts have a shape different from the curved surface part and extend in an axial direction of the seal ring, on two sides of the curved surface part in the axial direction of the seal ring.

A sensor and an electronic device are provided. The sensor includes a setting part and a seal ring in an annular shape. The setting part changes a setting of a sensor main body. The seal ring is provided to surround a shaft of the setting part and seals a gap between the shaft and a housing. The seal ring has a curved surface part and a pair of end parts. The curved surface part is curved convexly in a cross-sectional view. The pair of end parts have a shape different from the curved surface part and extend in an axial direction of the seal ring, on two sides of the curved surface part in the axial direction of the seal ring.