Abstract: A contact mechanism includes a current path having a 360° winding formed by a plurality of conductor sections and having an axis that is perpendicular to a plane in which a rotary contact body is movable. The conductor sections include a first section with a first current conductor that extends to a fixed contact. A second conductor section extends through the fixed and rotary contacts. A third conductor section extends through the rotary contact. A final, conductor section, including a second current conductor, extends to the rotary contact body and runs parallel and in close proximity to the first current conductor. Each of the first and second current conductors are substantially parallel to the rotary contact body in the closed position and are formed as straight and rigid busbars having a length corresponding at least to a length of a contact arm of the rotary contact body.

Abstract: A polarity-independent switching device for carrying and disconnecting high DC currents has a gastight, encapsulated, electrically insulating housing which can be filled with an insulating gas, and at least one pair of contacts disposed in the housing and made up of a fixed contact and a mobile contact. The two contacts are in contact with each other in a switched-on state of the switching device and are not in contact in a switch-off state of the switching device. An arc driver arrangement is included which generates a magnetic field at least in the region of the pair of contacts, as well as a first arc routing arrangement with which an arc produced between the contacts is guided in a first current direction to a quenching area arranged at a distance from the contacts.

Abstract: A switch for multi-pole direct current service independent of polarity includes a plurality of switching chambers. Each chamber includes a double interrupter having two separate fixed contacts with a first contact area, a movable contact piece with two second contact areas, each for creating a connection between the contact areas in an ON state and for separating the contact areas in an OFF state, and at least two quenching devices for quenching arcs occurring when the OFF state is brought about. The switch also includes magnets for exerting a magnetic field in an area of the contact areas to exert a magnetic force on the arcs and drive the arcs, independent of their current direction, in the direction of one of the erasing devices. The contact pieces are disposed with the second contact areas essentially in a line perpendicular to a direction of motion of the arcs.

Abstract: A switch for polarity-independent multi-pole direct current operation includes at least two switching chambers. Each switching chamber includes a single circuit breaker with a stationary contact having a first contact region and a movable electrically conductive contact part having a second contact region. The stationary contact and movable contact part are configured to create a connection between the first and the second contact regions in the ON state and to disconnect the first and the second contact regions in the OFF state. Each chamber also includes two arc chutes for quenching an arc forming between the first and the second contact regions when switching to the OFF state. At least two magnets are configured to generate a magnetic field so as to exert a magnetic force on the arcs to divert each arc in a direction of an arc chute independent of the direction of current.

Abstract: A trigger device for a power switch includes a bi-metal which is arranged near to a current path of a power switch in order to control triggering, as well as a bi-metal mounting device into which the bimetal is inserted and which is designed to enclose the bi-metal, in an arrangement substantially parallel to a current path of a power switch, such that heat radiated from the current path heats the bi-metal more or less across its whole length.

Abstract: Arrangement for establishing and/or breaking a connection between a plug and a complementary mating plug, wherein a lever which can be pivoted about an axis is arranged on the plug. The connection between the plug and the mating plug can be broken when the lever is pivoted into a disconnection position and/or can be established when the lever is pivoted into a connection position. The plug is, in particular, a switch module, for example a tripping module for a mating plug which is in the form of a circuit breaker.

Abstract: A system for controlling bus-networked devices includes a gateway including a memory unit and having an interface to an open field bus. A power supply unit supplies primary power for the gateway and bus subscribers. An auxiliary power supply unit supplies auxiliary power for the bus subscribers independent of bus functionality. A pluggable connection cable is electrically connects the gateway to the bus subscribers and transmits the primary and the auxiliary power and control and/or status information between the gateway and the bus subscribers. An application bus networks the bus subscribers to each other and is operable by the connection cable. A bus controller writes a target bus configuration of the application bus and stores the target bus configuration in a non-volatile manner in the memory unit. The bus controller is also configured to overwrite the target bus configuration with a present, actual bus configuration.

Abstract: A withdrawable unit system for an electric switching device, having a housing containing a access door, which gives access to all control elements of the unit and can be closed as tightly as required by international standards, such as DIN EN 60529. The withdrawable unit system optionally has a moveable unit capable of blocking and releasing the electrical switching device in and from at least three defined positions withdrawn, test and plugged-in by using a slide, a lever, and notches with dedicated notch blocking devices.

Abstract: A switching device includes at least a first current path and a second current path, each of which have a first connection and a second connection, whereby the first connections are arranged on the first side of the switching device and the second connections on the second side of the switching device, each current path has at least one contact pair, that has a first contact and a second contact, whereby at least the second contact is arranged on a contact member that is movable to the first contact and whereby in the switched-on status of the switching device, both the contacts are in contact with each other, each contact pair has at least one extinguishing device, whereby the extinguishing devices of both the current paths are arranged in a direction from the first connections to the second connections, behind one another and at least partly covering each other.

Abstract: A latching device for a circuit breaker includes a manual operating toggle moveably arranged between an OFF-position and an operation-readiness position, a moveable contact and a fixed contact, wherein the moveable contact is configured to open and close a main circuit of the circuit breaker. An energy storage mechanism is configured to store an actuating force of the toggle by the toggle being moved from the OFF-position to the operation-readiness position and to exert the stored force to the moveable contact to close the main circuit of the circuit breaker. A removable retention lever is configured to prevent movement of the moveable contact into a closing position upon the energy storage mechanism exerting the stored force to the moveable contact. A holding mechanism is configured to hold the toggle in the operation-readiness position.

Abstract: A method for controlling a multi-color signal assembly with a multi-color LED, a connection for voltage supply, and a control input. The control input is connected to a control output of a first control unit for controlling the signal assembly by pulse-width modulation signals (PWM signals) or to a signal assembly control output by the bus communication. After a supply voltage UB is connected, voltage UDI/BUS at the control input is measured within a predetermined time span ?t, wherein the first and second control units have respective first and second voltages at the control input within the time span ?t, wherein the first and second voltage are different. The signal assembly is placed in a BUS mode or in a PWM mode depending on the measured voltage UDI/BUS, can be controlled by bus communication in the BUS mode, and can be controlled by PWM signals in the PWM mode.

Abstract: A lockable manually-operated rotary actuator for an electrical switching device includes a turning handle mounted on a housing and connected to an operating axle of the switching device. A pivotably or displaceably mounted locking member in or on the turning handle is configured to lock the turning handle in a locking position via an operative connection with the housing. At least one released locking opening is present in the locked position with at least one padlock. A protective cap is disposed over the turning handle and provides access to the at least one released locking opening, a shape of the protective cap being such that the protective cap conforms to a shape of the turning handle and is fixed to the housing via a positive connection.

Abstract: A switching device suitable for DC operation includes at least a pair of contacts having a first and second contact, wherein at least one of the two contacts is mobile and the two contacts are in contact with one another in a switched-on state and are not in contact with one another in a switched-off state, having an arc driver arrangement which generates a magnetic field at least in the region of the pair of contacts, and comprising a first arc guiding arrangement by which an arc which is produced between the contacts is guided in a first current direction to a quenching device for quenching the arc, wherein a second arc guiding arrangement is provided, by means of which an arc which is produced between the contacts is guided in a second current direction, which is opposite the first current direction, to said quenching device for quenching the arc.

Abstract: A permanent magnet assembly for an arc driver assembly of an electric switching device, having a permanent magnet and a cover made of electrically insulating material, wherein the cover is connected directly to the permanent magnet.

Abstract: An electronic overcurrent release for circuit breakers includes a first setting device connected to at least one control input of a microcontroller and configured to set a selected suitable nominal current value in a range between a minimum nominal current value and a maximum nominal current value. A second setting device is connected to at least one control input of the microcontroller and configured to set a selected suitable lag level, the second setting device having a test position. In the test position, the microcontroller has a set fixed test current value, which is less than the minimum nominal current value, and a set fixed test delay time, the microcontroller providing a release signal at a release signal output upon at least one of the phase currents exceeding a value of the set fixed test current value and a time of the set fixed test delay time.

Abstract: A contactor for DC operation includes a first and a second contact that are fixed contacts and a contact bridge that has a third and a fourth contact. The contact bridge, in a closed position, provides a tactile contact between a first contact pair, which comprises the first and the third contact, and between a second contact pair, which comprises the second and the fourth contact. The contact bridge is movable via a guide along a direction of movement. A magnet arrangement is configured to generate an electromagnetic force on an electric arc, which arises on opening the contacts. The contact bridge has at least one recess, which is arranged between the guide and the third contact. The recess is configured to provide an opening at the contact bridge through which the arc, generated at the third contact, is deflected in the direction of movement of the contact bridge.

Abstract: A switching device, wherein the switching device has a switch cabinet, which has a switch cabinet housing, a switching apparatus that is attached in the switch cabinet, and an external module. The external module is attached to the switch cabinet housing and connected to the switching apparatus. The external module also comprises a display element and/or an operating element. The display element is visible from outside of the switch cabinet housing, and the operating element can be operated from outside of the switch cabinet housing.

Abstract: A system for controlling bus-networked devices, the system including a gateway, an open field bus electrically connected to the gateway, and a first power supply unit electrically connected to the gateway and configured to supply primary power for the gateway and a plurality of bus subscribers. An auxiliary power supply unit is included configured to supply auxiliary power for the plurality of bus subscribers independent of bus functionality. A pluggable connection cable is included configured to electrically connect the gateway to the plurality of bus subscribers and configured to transmit the primary and the auxiliary power and at least one of control information and status information between the gateway and the plurality of bus subscribers.

Abstract: A switch suitable for DC applications includes: two fixed conductive contacts with first contact areas; a movable conductive bridge with two second contact areas for being connected to the two first contact areas in the on-status and for being disconnected from the two the first contact areas in the off-status; and two arc-extinguishing units configured to extinguish electric arcs occurring between the first and second contact areas after disconnecting the second contact areas from the first contact areas. First conductive arc-guiding elements extend from each first contact area into the corresponding arc-extinguishing unit and at least one second conductive arc-guiding element extends into the arc-extinguishing units suitably shaped to guide the electric arcs from each of the second contact areas of the movable bridge into the arc-extinguishing units.

Abstract: A switching device suitable for DC operation includes at least one pair of contacts having a first contact and a second contact, wherein at least one of the two contacts is mobile and the two contacts are in contact with one another in a switched-on state of the switching device and are not in contact with one another in a switched-off state of the switching device, further having an arc driver arrangement for generating a magnetic field and an arc guiding arrangement for guiding an arc, which is produced between the contacts, to a quenching device. The problem of quenching arcs independently of the current direction in just one individual quenching apparatus in each case is solved with a substantially homogeneous magnetic field which is generated by permanent magnets.