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 contacting device for contacting an electrical conductor to an electrical conductor track includes a housing having openings for inserting the conductor and the conductor track into a cavity. A contact clip is in the cavity, and is a single element that includes a first portion having an end to press the conductor onto the conductor track, and a second portion from which a protrusion protrudes. The contact clip is bent in the cavity so that the first portion is under bending stress and the end of the first portion is pressed against the protrusion. The second portion is arranged in the housing such that it and the protrusion are displaced when a force acts on the second portion, as a result of which the end of the first portion is released from abutting the protrusion and is pressed against the conductor to hold the conductor on the conductor track.

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: A contacting device for contacting an electrical conductor to an electrical conductor track includes a housing having openings for inserting the conductor and the conductor track into a cavity. A contact clip is in the cavity, and is a single element that includes a first portion having an end to press the conductor onto the conductor track, and a second portion from which a protrusion protrudes. The contact clip is bent in the cavity so that the first portion is under bending stress and the end of the first portion is pressed against the protrusion. The second portion is arranged in the housing such that it and the protrusion are displaced when a force acts on the second portion, as a result of which the end of the first portion is released from abutting the protrusion and is pressed against the conductor to hold the conductor on the conductor track.

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 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 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: 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: 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 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.