A mobile application including a motive power circuit including a power storage device and an electrical load electrically coupled through a power bus; a power distribution unit (PDU) electrically interposed between the power storage device and the electrical load; wherein the breaker/relay includes: a fixed contact electrically coupled to the power bus; a movable contact selectively electrically coupled to the fixed contact; an armature operationally coupled to the movable contact; a first biasing member biasing the armature into a position; a contact force spring operationally interposed between the armature and the movable contact, such that in response to the armature being in the second position, the contact force spring is at least partially compressed; and a means for adjusting an opening velocity of the moveable contact, wherein the opening velocity comprises an initial velocity of the moveable contact away from the fixed contact in response to a physical opening response.

An electrical DC switching system for extinguishing an electric arc, wherein the electrical DC switching system includes: a contact arrangement having a first contact and a second contact, a current injection circuit including a resonance circuit configured to be connected across the contact arrangement, and a first switch connected to the resonance circuit and to the first contact, wherein the first switch is configured to be switched between an open state and a closed state, wherein in the closed state the first switch is configured to enable an injection current to flow through the resonance circuit in a first flow direction and into the contact arrangement in a direction opposite to a flow direction of a contact arrangement arc current, and an arc chute assembly including a plurality of splitter plates configured to extinguish an electric arc across the first contact and the second contact, wherein each splitter plate of the plurality of splitter plates has a layered configuration including a magnetic layer and two non-magnetic layers.

An electrical DC switching system for extinguishing an electric arc, wherein the electrical DC switching system includes: a contact arrangement having a first contact and a second contact, a current injection circuit including a resonance circuit configured to be connected across the contact arrangement, and a first switch connected to the resonance circuit and to the first contact, wherein the first switch is configured to be switched between an open state and a closed state, wherein in the closed state the first switch is configured to enable an injection current to flow through the resonance circuit in a first flow direction and into the contact arrangement in a direction opposite to a flow direction of a contact arrangement arc current, and an arc chute assembly including a plurality of splitter plates configured to extinguish an electric arc across the first contact and the second contact, wherein each splitter plate of the plurality of splitter plates has a layered configuration including a magnetic layer and two non-magnetic layers.

An electronic circuit breaker comprises an arc interruption mechanism that would enhance arc attraction to arc plates and would reduce the possibilities of an arc escaping from the arc plates. The arc interruption mechanism includes an enhanced arc extinguishing chamber. The arc extinguishing chamber includes a plurality of arc plates having first and second sides. The circuit breaker further comprises a stationary contact plate that includes a first arc runner disposed near the first side of the plurality of arc plates. The circuit breaker further comprises a load terminal that includes a second arc runner disposed near the second side of the plurality of arc plates. As an arc is attracted by the plurality of arc plates and the arc enters the plurality of arc plates, a length of a current path associated with the arc is reduced through the first arc runner and the second arc runner by reducing a resistance of the current path for the arc or by reducing a voltage across the circuit breaker.

An electromagnetic relay includes a fixed contact part including a fixed terminal and a fixed contact connected to the fixed terminal, a movable contact part including a movable contact spring and a movable contact connected to the movable contact spring, an armature to which the movable contact part is connected, an electromagnet configured to move the armature, a magnet configured to stretch an arc generated between the fixed contact and the movable contact, and a first arc extinguishing plate and a second arc extinguishing plate configured to extinguish the stretched arc. The fixed contact and the movable contact are disposed between the first arc extinguishing plate and the second arc extinguishing plate. The magnet is disposed between a first pair of the fixed contact part and the movable contact part and a second pair of the fixed contact part and the movable contact part.

An electromagnetic relay includes a fixed contact part including a fixed terminal and a fixed contact connected to the fixed terminal, a movable contact part including a movable contact spring and a movable contact connected to the movable contact spring, an armature to which the movable contact part is connected, an electromagnet configured to move the armature, a magnet configured to stretch an arc generated between the fixed contact and the movable contact, and a first arc extinguishing plate and a second arc extinguishing plate configured to extinguish the stretched arc. The fixed contact and the movable contact are disposed between the first arc extinguishing plate and the second arc extinguishing plate. The magnet is disposed between a first pair of the fixed contact part and the movable contact part and a second pair of the fixed contact part and the movable contact part.

Disclosed is a switch device with at least one contact point and a permanent magnetic arc blowing device which is paired with the contact point, wherein the arc blowing device has at least one second permanent magnet (15) as an auxiliary magnet, and the auxiliary magnet is arranged in the direct vicinity of the contact point (7.1), such that at least one section of the magnetic field (17) of the auxiliary magnet (15) amplifies the blow-out field in the transition region.

Disclosed is a switch device with at least one contact point and a permanent magnetic arc blowing device which is paired with the contact point, wherein the arc blowing device has at least one second permanent magnet (15) as an auxiliary magnet, and the auxiliary magnet is arranged in the direct vicinity of the contact point (7.1), such that at least one section of the magnetic field (17) of the auxiliary magnet (15) amplifies the blow-out field in the transition region.

A switchgear includes a circuit breaking section having a moveable contact bridging element and at least one first arc chutes adjacent the contact bridging element, each arc chute including a base plate for connecting to the contact bridging element and a group of splitter plates placed adjacent the base plate, where the splitter plates of the groups are separated from the base plate and each other via air gaps and resistors interconnect at least some of the plates in at least a first of the arc chutes for bypassing corresponding air gaps, wherein the resistors have values in the range 5 k-1 M, current ratings below 100 mA and power ratings below 1 W.

An arc chamber for a DC circuit breaker includes an entry side adapted to receive an electric arc, which was generated outside of the arc chamber and which propagates in a forward direction, a plurality of stacked splitter plates, and at least one inhibitor barrier. The at least one inhibitor barrier is arranged on the entry side to inhibit a reverse propagation of the electric arc out of the arc chamber in a reverse direction. DC circuit breaker comprising an arc chamber. Use of an arc chamber with a circuit breaker in a DC electrical system.