Abstract: A self-resetting current limiter includes: a first connecting contact for bringing the current limiter into contact with a first electrical conductor a second connecting contact for bringing the current limiter into contact with a second electrical conductor; a first movable contact member; and a second movable contact member, wherein the first and the second movable contact members are electrically interconnected in a first position of the first and the second movable contact member, such that a current path between the first and the second connecting contact is closed, and wherein the first and the second movable contact members are separated from one another in a second position of the first and the second movable contact member, such that the current path between the first and the second connecting contact is interrupted.

Abstract: A self-resetting current limiter includes: a first connecting contact for bringing the current limiter into contact with a first electrical conductor a second connecting contact for bringing the current limiter into contact with a second electrical conductor; a first movable contact member; and a second movable contact member, wherein the first and the second movable contact members are electrically interconnected in a first position of the first and the second movable contact member, such that a current path between the first and the second connecting contact is closed, and wherein the first and the second movable contact members are separated from one another in a second position of the first and the second movable contact member, such that the current path between the first and the second connecting contact is interrupted.

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: An electric protective switching device is configured as a modular system and includes a switching device base module including first mechanical guide elements and an installation space with electric contacts. A control module including control electronics, first mechanical elements and electric counter-contact elements is installable into the installation space. A communication module including second mechanical elements is configured as an interface between the control electronics and an electronic bus system. The control module and the communication module are connectable mechanically and electrically to the switching device base module.

Abstract: A switching arrangement includes a plug and a complementary mating plug for establishing and separating a connection between the plug and the mating plug. The plug includes a locking bolt disposed rotationally about an axis. The locking bolt includes a thread and the mating plug includes a mating thread. The plug is lockable to the mating plug by driving in the thread of the locking bolt into the mating thread. The switching device is configured to be moved to a connected position by driving in the thread of the locking bolt into the mating thread, and thereby providing a movement of the plug relative to the mating plug, and is configured to be moved to a disconnected position by driving out the thread of the locking bolt from the mating thread, thereby providing the movement of the plug relative to the mating plug.

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: An electric protective switching device is configured as a modular system and includes a switching device base module including first mechanical guide elements and an installation space with electric contacts. A control module including control electronics, first mechanical elements and electric counter-contact elements is installable into the installation space. A communication module including second mechanical elements is configured as an interface between the control electronics and an electronic bus system. The control module and the communication module are connectable mechanically and electrically to the switching device base module.

Abstract: A multipolar circuit breaker includes main circuits having main contacts and a latching mechanism for tripping the main contacts of main circuits. A tripping unit configured to actuate the latching mechanism in response to detection of an over-current in at least one of the main circuits. The tripping unit is plugged into a section of the circuit breaker and includes at least one bimetal strip connected in series with at least one of the main circuits and operatively connected with the latching mechanism.

Abstract: A tripping unit is configured to send an electrical tripping-signal to a switching unit of a circuit breaker so as to trip main contacts of main circuits of the circuit breaker in response to a detection of a current being above a predetermined level in at least one of the main circuits. The tripping unit includes a fuse configured to be connected in series to a main circuit of the circuit breaker and a detection unit connected in parallel with the fuse and configured to generate the tripping signal for the switching unit in response to the fuse being blown.

Abstract: An actuating unit or actuating mechanism and release for a circuit breaker. The magnetic mechanism of the release includes a magnet armature, which can move linearly in a magnet coil, is in the form of a tripping plunger and can be moved towards a permanent magnet counter to the force of a storage compression spring and is held fixedly by said permanent magnet in the case of a magnet coil through which no current is flowing. The tripping unit is in the form of a mechanical force store. After a tripping action, the mechanical force store needs to be reset manually again. For this purpose, a rotary movement of the drive shaft with an angular displacement of from 20 to 30 degrees takes place in the opposite direction to the ON switching rotary movement.

Abstract: An electrical switching device having at least one pole includes a housing of an insulating material, and an incoming terminal contact and an outgoing terminal contact associated with a first pole. Each of the terminal contacts includes a first connection device for connection of a first external electrical conductor. At least one of the terminal contacts includes a second connection device for pluggable connection of a second electrical conductor.

Abstract: An actuating unit or actuating mechanism and release for a circuit breaker. The magnetic mechanism of the release includes a magnet armature, which can move linearly in a magnet coil, is in the form of a tripping plunger and can be moved towards a permanent magnet counter to the force of a storage compression spring and is held fixedly by said permanent magnet in the case of a magnet coil through which no current is flowing. The tripping unit is in the form of a mechanical force store. After a tripping action, the mechanical force store needs to be reset manually again. For this purpose, a rotary movement of the drive shaft with an angular displacement of from 20 to 30 degrees takes place in the opposite direction to the ON switching rotary movement.

Abstract: A manually operated circuit breaker for motor protection and/or line protection includes a basic board including a switching mechanism, a contact device, and a main current path. The switching mechanism includes a switching apparatus and a breaker latching mechanism. The circuit breaker includes a manual actuating device disposed in a housing part protruding from an operating front and configured to activate the switching mechanism via a rotary knob and an actuating shaft disposed perpendicular to the operating front. The circuit breaker includes an electronic control unit module pluggable onto the basic board and configured to be set with at least one control variable for a fault scenario so as to activate the switching mechanism by indicating a settable fault scenario. The electronic control unit is supplied with a voltage from the main current path via the contact device.

Abstract: An electrical switching device having at least one pole includes a housing of an insulating material, and an incoming terminal contact and an outgoing terminal contact associated with a first pole. Each of the terminal contacts includes a first connection device for connection of a first external electrical conductor. At least one of the terminal contacts includes a second connection device for pluggable connection of a second electrical conductor.

Abstract: A rotation activated circuit breaker with a leading auxiliary switch, in which the auxiliary contacts of the auxiliary switch are actuated before the main contacts. An actuator element is provided, which contains a drive pinion that is rotation actuated by an actuating mechanism and a longitudinally movable first gear rack, which engages with the drive pinion and actuates the auxiliary switch. Furthermore, a second gear rack, which lags behind the first gear rack in the closing direction, and an output pinion, assigned to the second gear rack, which is connected to a drive shaft for the breaking mechanism of the circuit breaker, are provided. The tooth pitch of the output pinion and the second gear rack is greater than the tooth pitch of the drive pinion and the first gear rack so that the total rotation angle of the drive pinion and output pinion is the same over the full closing motion of the actuating mechanism.