Abstract: A switching device has a housing-mounted contact and a movable contact. The movable contact is provided for making contact with the housing-mounted contact. The switching device has a switch lock with a latch and a latch support, wherein the latch support has a latching location for latching the latch to the latch support, wherein the switching device furthermore has a hand switching lever. A connecting rod is mounted movably on the latch support, the connecting rod bearing against a projection of the hand switching lever when the hand switching lever is arranged in the position in which the contacts are in contact. An actuation of the hand switching lever—for separating the movable contact from the housing-mounted contact—moves the connecting rod and thereby releases the latching of the latching support to the latch.

Abstract: In a method for adapting an arc sensor (35) to a position in an electrical installation system, according to the invention a specifiable number of specifiable arcs are simulated and/or produced at least at a first position in the installation system, wherein after each simulated or produced arc, at least one current curve and/or voltage curve is recorded in a measured-value recording unit (2), wherein at least one characteristic of the recorded current curves and/or voltage curves is determined and stored, and the arc sensor (35) is trained for the electrical installation system.

Abstract: A method for distinguishing an arc from a luminous gas at least containing metal vapor includes sensing light in a monitoring region and determining a first intensity I?1 of the sensed light at a first wavelength ?1 and a second intensity I?2 of the sensed light at a second, greater wavelength ?2. The ratio I?1/I?2 between the first intensity I?1 and the second intensity I?2 is determined. The sensed light is associated with an arc if said ratio I?1/I?2 is greater than a specifiable first threshold value and/or with a luminous gas at least containing metal vapor if said ratio I?1/I?2 is less than a specifiable second threshold value.

Abstract: A switching device has a first switching path having first switching contacts and has a second switching path having second switching contacts, wherein the first switching path has a first electromagnetic tripping apparatus having a first coil winding, wherein the first coil winding has a first winding direction, wherein the second switching path has a second electromagnetic tripping apparatus having a second coil winding, and wherein the second coil winding has a second winding direction. The first switching contacts and the second switching contacts are coupled for substantially simultaneous actuation. The first switching path and the second switching path are arranged adjacent to each other in the switching device. The first winding direction is opposite the second winding direction.

Abstract: A shifting device has a contact which is fixed to the housing; a movable contact; a shift lock which has a latch and a latch support, the latch support having a latching point for latching the latch to the latch support; a manual shifting lever which is connected to the latch using a first bracket in order to contact the movable contact with the contact that is fixed to the housing; and a sudden disconnect mechanism for manually causing a sudden separation of the contacts, the manual shifting lever additionally having a second bracket such that an actuation of the manual shifting lever releases the latch connection between the latch support and the latch in order to separate the movable contact from the contact which is fixed to the housing.

Abstract: A switchgear has a housing with a fastening device for mounting the switchgear on a supporting rail arranged on the housing. The fastening device has a stationary first fastening lug and a second fastening lug arranged opposite the first fastening lug. The second fastening lug can be stationary, a spring is arranged in the region of the second fastening lug and is preloaded in the direction of the first fastening lug, and the spring projects partly into a groove which is delimited by the second fastening lug.

Abstract: A residual-current circuit breaker includes switching contacts and at least one residual current detector configured to determine a residual current signal. The residual-current circuit breaker is configured to bring about an opening of the switching contacts upon the detection of a residual current greater than a pre-definable tripping current. A first circuit arrangement is configured to inhibit tripping of the residual-current circuit breaker when a residual current occurs that has a duration that is shorter than half a period of a grid frequency of an associated electrical grid.

Abstract: A residual current circuit breaker having a core-balance current transformer for detecting a residual current, wherein a secondary winding is arranged on a core of the core-balance element transformer, wherein the residual current circuit breaker has an AC measurement arrangement and a DC measurement arrangement, wherein the AC and DC measurement arrangements are designed to operate simultaneously and in parallel.

Abstract: A switching device includes at least a first input and a second input, as well as at least a first output and a second output. The first input is connected with the first output through a first controller and a first switch contact pair. The second input is connected with the second output through a second controller and a second switch contact pair. The switching device further includes a transformer with a core. The first controller forms at least a first coil of the transformer and the second controller forms at least a second coil of the transformer. A switch arrangement is configured to maintain an unsaturated state of the core.

Abstract: A switching device includes at least a first input and a second input, as well as at least a first output and a second output. The first input is connected with the first output through a first controller and a first switch contact pair. The second input is connected with the second output through a second controller and a second switch contact pair. The switching device further includes a transformer with a core. The first controller forms at least a first coil of the transformer and the second controller forms at least a second coil of the transformer. A switch arrangement is configured to maintain an unsaturated state of the core.

Abstract: A method for adjusting a tripping unit for a safety switch, wherein the tripping unit has a first current path as pan of a magnetic tripping device, and wherein the tripping unit has a second current path as part of a bimetallic tripping device. According to the invention, a specifiable test current is applied to the tripping unit, a partial current in one of the two current paths is measured, and a cross-section at one of the two current paths is reduced on the basis of the magnitude of the measured partial current.

Abstract: A method for the production of an electric contact carrier includes producing a basic profile from a basic material. A contact material is applied on a contact accepting area of the basic profile. The contact material is formed into a contact of the contact carrier. Then, the contact carrier is removed from the basic material.

Abstract: In a method for adapting an arc sensor (35) to a position in an electrical installation system, according to the invention a specifiable number of specifiable arcs are simulated and/or produced at least at a first position in the installation system, wherein after each simulated or produced arc, at least one current curve and/or voltage curve is recorded in a measured-value recording unit (2), wherein at least one characteristic of the recorded current curves and/or voltage curves is determined and stored, and the arc sensor (35) is trained for the electrical installation system.

Abstract: An arc detector comprises an analysis unit for evaluating the first measurement signal according to at least one first evaluation scheme for detecting an arc or at least one electrical effect of the arc on the electrical load network (2), wherein the electrical installation arrangement (1) further comprises at least one first tripping unit (6), which switches off the first switch (3) and disconnects the load (4) (2) in such a way if an arc is detected by the arc detector (31), wherein in order to reduce false tripping events, a second analysis and/or evaluation scheme is provided, the first evaluation scheme has a higher sensitivity than the second evaluation scheme, the second evaluation scheme is provided if a first living being of a specifiable type is present in a specifiable first surrounding area around the first load (4), and the first evaluation scheme is provided if the first living being is present in the first surrounding area.

Abstract: A residual current circuit breaker having a core-balance current transformer for detecting a residual current, wherein a secondary winding is arranged on a core of the core-balance element transformer, wherein the residual current circuit breaker has an AC measurement arrangement and a DC measurement arrangement, wherein the AC and DC measurement arrangements are designed to operate simultaneously and in parallel.

Abstract: A residual-current circuit breaker includes a core-balance transformer, a first conductor and a second conductor of an electrical supply system which is to be protected being routed through the core-balance transformer, and a secondary winding being arranged on the core-balance current transformer. The secondary winding is connected to a release by circuitry. A test circuit connecting the first conductor and the second conductor has at least a first test resistor and a reset button, in order to provide accurate checking of an ability of residual current tripping to function, the test circuit has a second test resistor arranged in series with the first test resistor by circuitry. The second test resistor is bridged by a bypass line that is routed through the core-balance transformer and at least one first voltage dependent resistor is arranged in the bypass line by circuitry.

Abstract: A residual-current circuit breaker includes switching contacts and at least one residual current detector configured to determine a residual current signal. The residual-current circuit breaker is configured to bring about an opening of the switching contacts upon the detection of a residual current greater than a pre-definable tripping current. A first circuit arrangement is configured to inhibit tripping of the residual-current circuit breaker when a residual current occurs that has a duration that is shorter than half a period of a grid frequency of an associated electrical grid.

Abstract: A modular lighting system includes a mobile lighting unit and a stationary power supply network connection unit, wherein the lighting unit has at least one light source, wherein the lighting unit and the network connection unit have corresponding electrical contacts for electrical connection of the lighting unit to the network connection unit, wherein the network connection unit has electrical connections to connect the network connection unit to an electrical power supply network, wherein the electrical connections are formed as electrical connection terminals, and wherein the network connection unit has a rail mount for installation on a mounting rail of an electrical distribution system.

Abstract: A residual-current circuit breaker includes a core-balance transformer, a first conductor and a second conductor of an electrical supply system which is to be protected being routed through the core-balance transformer, and a secondary winding being arranged on the core-balance current transformer. The secondary winding is connected to a release by circuitry. A test circuit connecting the first conductor and the second conductor has at least a first test resistor and a reset button, in order to provide accurate checking of an ability of residual current tripping to function, the test circuit has a second test resistor arranged m series with the first test resistor by circuitry. The second test resistor is bridged by a bypass line that is routed through the core-balance transformer and at least one first voltage dependent resistor is arranged in the bypass line by circuitry.

Abstract: A connection arrangement includes a connector for connecting at least two bus bars in an electrically conductive manner. The connector has a first hook-shaped projection which engages in a receptacle of one of the bus bars. The first hook-shaped projection can be constructed to embrace a peripheral area of the receptacle.