An electronic component includes an internal component, an inner case, and an outer case. The inner case is hermetically sealed and houses the internal component. The outer case is arranged outside the inner case with a gap between the outer case and the inner case. The outer case includes an opening. The opening communicates the gap with an outside of the outer case.

A switching device is disclosed. In an embodiment a switching device includes at least one fixed contact and at least one movable contact, wherein at least one of the contacts includes a metal matrix composite material having a metallic matrix material and a filler dispersed within the matrix material, and wherein the contacts are arranged in a switching chamber with a gas and the gas contains H2.

An electrical switch element is disclosed. The electrical switch element has a switch chamber having contacts and an opening, a propulsion element extending through the opening in the switch chamber and having an annular flange, and a seal configuration having an annular protrusion surrounding the opening. The propulsion element is movable within the opening to open or close the contacts, and in an end position of the propulsion element, the annular flange abuts the annular protrusion.

Electrical switching devices that can have a housing cup having an opening and a header covering and making a seal with said cup. Internal components are included within the housing, with the internal components configured to change the state of the switching device from a closed state and an open state in response to input. The closed state allows current flow through said device and the open state interrupts current flow through said device. A plurality of fixed contact are included that are electrically connected to said internal components for connection to external circuitry, wherein the the fixed contact pass though the header with a portion exposed above the header. A plurality of glass/ceramic eyelets are included, each of which is mounted to a respective one of the fixed contacts on the exposed portion of its one of the fixed contacts. Each of the eyelets can be radially symmetric about its one of the fixed contacts, with the eyelets covering less than all of the header.

A relay includes an electromagnet, a plurality of springs having contacts which open and close in accordance with operation of the electromagnet and terminals, and a base which supports the springs, wherein at least one of the plurality of springs has a locked part which is locked on the base using resilience of the spring, and the base has a lock part which locks the locked part.

Contact assemblies are described herein having certain components, or portions thereof, that are formed integral to one another to reduce the complexity of manufacturing, improve the operation characteristics, and increase operational reliability of devices using the contact assemblies. New shapes to features and components of the contact assemblies are also disclosed, with the shapes providing the desired operational characteristics. Embodiments of the invention are also directed contactors or fuses (i.e., electrical switching devices) utilizing the contactor assemblies according to the present invention, and to electrical circuits and systems utilizing the electrical switching devices according to the present invention.

A relay includes an electromagnet, a plurality of springs having contacts which open and close in accordance with operation of the electromagnet and terminals, and a base which supports the springs, wherein at least one of the plurality of springs has a locked part which is locked on the base using resilience of the spring, and the base has a lock part which locks the locked part.

An electric device includes an electric component and a housing having a lower housing part and an upper housing part. The electric component is supported on the lower housing part. The lower housing part and the upper housing part surround a housing volume in which the electric component is sealingly encased. A weld is formed between the upper housing part and the lower housing part. One of the lower housing part and the upper housing part has a protrusion welded to the other one of the lower housing part and the upper housing part. A gap is disposed between the lower housing part and the upper housing part, the gap extending radially from the protrusion to an outside of the housing. A solidified molten material from the weld is at least partially received in the gap.

A rupture resistant relay. The relay has an outer housing with contacts extending through the outer housing. An outer core is positioned in the outer housing. A cover member is provided on the outer core. The cover member and the outer core encapsulate an interior chamber. A support member extends over the cover member. The support member is integrally attached to the outer core. The cover member prevents components the cover member and components of the interior chamber from projecting out of the envelope of the outer housing when an explosion occurs in the interior chamber.

An arc path formation unit and a direct current relay comprising same are disclosed. An arc path formation unit according to an embodiment of the present invention comprises a plurality of magnet parts. The plurality of magnet parts can form a magnetic field in a space inside an arc chamber to form an electromagnetic force for moving generated arc. The magnetic field formed by each magnet part forms an electromagnetic force toward the outside of the arc chamber. Electromagnetic forces formed adjacently to fixed contacts are formed in opposite directions. Therefore, the generated arc can be quickly moved to the outside and extinguished without damage to each constituent element of a direct current relay caused by the generated arc.