Abstract: A low-voltage switching apparatus is disclosed which comprises a switching device having one or more switch poles. Each switch pole comprises first and second pole terminals that can be coupled with corresponding line conductors of an electric line; a fixed contact assembly is connected to the first pole terminal and includes first fixed contacts and second fixed contacts electrically insulated from the first fixed contacts; and a movable contact assembly connected to the second pole terminal and including first movable contacts and second movable contacts. The switching apparatus comprises, for each switch pole, a current limiter connected with the second fixed contacts and the first pole terminal of the switch pole. Each current limiter is configured to limit a current flowing along a series circuit including at least the second fixed contacts, the current limiter and the first pole terminal, during an opening maneuver of the switching device.

Abstract: A switch system includes a mechanical switch for switching electrical currents, the mechanical switch operating in one of a closed state and an open state; the system further including an actuator configured to change the state of the mechanical switch, wherein the actuator comprises a Thomson-coil system including a Thomson coil, and wherein the mechanical switch and the Thomson coil are electrically connected in series.

Abstract: The present disclosure relates to a switching apparatus for DC electric grids. The switching apparatus comprises first and second electric terminals for electrical connection with corresponding conductors of an electric line. The switching apparatus further comprises a primary switching arrangement including primary switching devices configured to conduct or block a current along a conductive path between the first and second electric terminals. The switching apparatus additionally comprises a control stage configured to control one or more components of the switching apparatus and a power supply stage electrically connected to the control stage to feed the control stage with electric power. The switching apparatus also comprises a secondary switching arrangement including secondary switching devices controllable by the control stage. The secondary switching devices are configured to electrically connect the power supply stage with said first electric terminals or with said second electric terminals.

Abstract: A switch pole for a low voltage switching device including an insulating casing defining an internal space with a contact area and an arc extinguishing area of said switch pole, a fixed contact assembly and a movable contact assembly positioned in said contact area and including, respectively, one or more fixed contacts and one or more movable contacts, which can be mutually coupled or uncoupled, and an arc chamber positioned in said arc extinguishing area and including a plurality of parallel arc-breaking plates and a terminal arc-breaking element, which includes a plate portion arranged in parallel to said arc-breaking plates and having one or more through openings and an elongated portion protruding from said plate portion and extending across said arc-extinguishing area, from said plate portion towards said fixed contact assembly.

Abstract: A switch system includes a mechanical switch for electrical currents. The mechanical switch operates in a conductive state and in a non-conductive state. A first actuator is configured to change the state of the mechanical switch, wherein an actuation of the first actuator is based on a Thomson coil system. A second actuator is also configured to change the state of the mechanical switch and includes a loaded spring system locked by a latch system. Each of the first and second actuators is configured to change the state of the mechanical switch depending on a property of an electrical current passing through the mechanical switch.

Abstract: A switch pole for a low-voltage switching device is provided. The switch pole includes an insulating casing defining an internal space with a contact region and an arc extinguishing region of the switch pole, a first pole terminal and a second pole terminal couplable with corresponding line conductors of an electric line, a fixed contact assembly and a movable contact assembly positioned in the contact region and including one or more fixed contacts and one or more movable contacts, respectively, which can be mutually coupled or uncoupled, an arc chamber positioned in the arc extinguishing region and including a plurality of parallel arc-breaking plates, and a magnetic field generation arrangement configured to generate a magnetic field during an opening maneuver of the switch pole.

Abstract: A switch pole for a low voltage switching device including an insulating casing defining an internal space with a contact area and an arc extinguishing area of said switch pole, a fixed contact assembly and a movable contact assembly positioned in said contact area and including, respectively, one or more fixed contacts and one or more movable contacts, which can be mutually coupled or uncoupled, and an arc chamber positioned in said arc extinguishing area and including a plurality of parallel arc-breaking plates and a terminal arc-breaking element, which includes a plate portion arranged in parallel to said arc-breaking plates and having one or more through openings and an elongated portion protruding from said plate portion and extending across said arc-extinguishing area, from said plate portion towards said fixed contact assembly.

Abstract: A switch system includes a mechanical switch for electrical currents. The mechanical switch operates in a conductive state and in a non-conductive state. A first actuator is configured to change the state of the mechanical switch, wherein an actuation of the first actuator is based on a Thomson coil system. A second actuator is also configured to change the state of the mechanical switch and includes a loaded spring system locked by a latch system. Each of the first and second actuators is configured to change the state of the mechanical switch depending on a property of an electrical current passing through the mechanical switch.

Abstract: A switch system includes a mechanical switch for switching electrical currents, the mechanical switch operating in one of a closed state and an open state; the system further including an actuator configured to change the state of the mechanical switch, wherein the actuator comprises a Thomson-coil system including a Thomson coil, and wherein the mechanical switch and the Thomson coil are electrically connected in series.