An inverter assembly includes an integrated coolant coupling port; a fluid connector having a chamfered lip and a fir tree circumferentially aligned with at least one O-ring on an outer body of the fluid connector; and a flexible hose configured to couple the integrated coolant coupling port to the fluid connector.

An electromagnetic relay includes a fixed contact holder, a moving contact holder, an electromagnetic device, and a magnet. The fixed contact holder extends in a predetermined direction and is provided with a fixed contact. The moving contact holder also extends in the predetermined direction, and is provided with a moving contact. The magnet is arranged perpendicularly to an opening/closing direction of the fixed contact and the moving contact. A stretch space in which an arc generated between the fixed contact and the moving contact is stretched is provided, in the predetermined direction, beyond respective tips of the fixed contact holder and the moving contact holder. The stretch space also faces a surface of the fixed contact holder and a surface of the moving contact holder.

A switching device includes: a first terminal contact; a first fixed contact arranged at the first terminal contact; a contact bridge; a contact bridge carrier arranged at the contact bridge and having a barrier; a first movable contact arranged at the contact bridge; a second terminal contact; a second fixed contact arranged at the second terminal contact; a second movable contact arranged at the contact bridge; and a magnetic drive assembly including a coil and an armature, the armature being coupled to the contact bridge. The first fixed contact is in contact with the first movable contact in a switched-on state of the switching device. The first fixed contact is free of contact with the first movable contact in a switched-off state of the switching device. The second fixed contact is in contact with the second movable contact in the switched-on state of the switching device.

A switching device includes: a first fixed contact; a second fixed contact; a contact bridge; and a first movable contact and a second movable contact that are arranged at the contact bridge. The first fixed contact is in contact with the first movable contact and the second fixed contact is in contact with the second movable contact in a switched-on state of the switching device. The first fixed contact is free of contact with the first movable contact and the second fixed contact is free of contact with the second movable contact in a switched-off state of the switching device. A load current that flows through the contact bridge between the first movable contact and the second movable contact in the switched-on state has a curved path. A path of the load current flows through the contact bridge between the first movable contact and the second movable contact.

This limiter pole (B) for a multipole DC electrical switch (2) comprises a compartment in which an input terminal and an output terminal for a direct electric current are provided, along with a first electrical contact connected to the input terminal and a second electrical contact connected to the output terminal, third and fourth electrical contacts connected to one another in series, the third and fourth contacts being capable of being moved simultaneously relative to the first and second electrical contacts, respectively, between a closed position, in which the first and third contacts and the second and fourth contacts make contact with one another so as to allow the direct electric current to flow between the input terminal and the output terminal, and an open position, in which said contacts are located away from one another, interrupting the flow of the current between the input terminal and the output terminal. The limiter pole (B) comprises a first electric arc formation chamber in which the first and third electrical contacts are placed, a second electric arc formation chamber in which the second and fourth electrical contacts are placed, and first and second electric arc extinguishing chambers which are associated with the first and second electric arc formation chambers, respectively.

Embodiments of the present disclosure provide a stationary contact assembly and a corresponding switch contact. The stationary contact assembly comprises: a stationary contact body (21); a stationary contact point (23) placed on the stationary contact body (21); and an arc-guiding member (25) fixed on the stationary contact body (21) and including an arc guiding portion (251), the arc guiding portion (251) comprising a first end (A) and a second end (B) that are opposite to each other, the first end (A) being close to the stationary contact point (23), a direction form the first end (A) to the second end (B) defining a main movement direction (F) of arc. The arc guiding portion (251) of the arc-guiding member (25) comprises an arc-guiding section (2511) at the first end (A), the arc-guiding section is adapted to guide the arc away from the stationary contact point (23) into the arc guiding portion (251), and the stationary contact point (23) is close to or in contact with the arc-guiding section (2511) in the main movement direction (F) of the arc. The stationary contact assembly of the embodiments of the present disclosure has an improved arc-guiding member that can guide the arc to quickly leave the contact point, enhance the mechanical strength of the stationary contact and reduce the production cost of the contact.

A contact device including a fixed contact member having a fixed contact; and a movable contact member which includes a movable contact and is movable between a position where the movable contact is in contact with the fixed contact and a position where the movable contact is away from the fixed contact, a first contact member which is one of the fixed contact member and the movable contact member further including a recess in a surface to which a first contact of the first contact member is provided. The first contact protrudes toward a second contact of a second contact member which is another of the fixed contact member and the movable contact member, and a periphery of the recess at least partially surrounding a periphery of the first contact in a surface perpendicular to a protruding direction of the first contact.

A contact device including a fixed contact member having a fixed contact; and a movable contact member which includes a movable contact and is movable between a position where the movable contact is in contact with the fixed contact and a position where the movable contact is away from the fixed contact, a first contact member which is one of the fixed contact member and the movable contact member further including a recess in a surface to which a first contact of the first contact member is provided. The first contact protrudes toward a second contact of a second contact member which is another of the fixed contact member and the movable contact member, and a periphery of the recess at least partially surrounding a periphery of the first contact in a surface perpendicular to a protruding direction of the first contact.

A low voltage switch pole including an insulating casing defining an internal space with a contact area and an arc extinguishing area, a fixed contact assembly and a movable contact assembly being position in the contact area, the movable contact assembly being movable between a closed position in which it is into contact with the fixed contact assembly and an open position in which it is spaced apart from the fixed contact assembly, an arc chamber including a plurality of substantially parallel metallic plates being position in the arc extinguishing area, wherein fixed contact assembly is provided with a contact support, a contact surface contacting the movable contact assembly in the closed position and positioned on the contact support, and a conductive expansion plate positioned on the contact support and extending toward the arc chamber, and wherein the fixed contact assembly is provided with a gasifying plate which is directly mounted on the conductive expansion plate.

A circuit breaker includes a switching unit for interrupting an electrical circuit. The switching unit has a stationary fixed contact and a moving contact to be moved relative to the fixed contact and to be switched from a closed position to an open position. A quenching device for quenching an arc when the contacts are opened includes a prechamber for guiding the arc from the contacts to a quenching chamber. The prechamber has two insulating side walls and a pair of arc guide rails situated therebetween. A ferromagnetic shaped part is disposed on each of the side walls, and a permanent magnet is disposed in the region of the fixed contact. The magnetic field of the permanent magnet guides the arc along one of the arc guide rails.