Abstract: An electrical terminal, for example a terminal block which includes a terminal housing having at least one terminal element located within, such as a tension spring terminal, and with at least one current bar. The terminal housing also includes at least one lead insertion opening for inserting an electrical lead to be connected, at least one actuating opening for inserting an actuating tool for opening the tension spring terminal and at least one test plug opening for inserting a test plug which is laterally offset from the plane of the actuating opening. This electrical terminal enables a test tap while also having smaller size than conventional electrical terminals.

Abstract: A housing for an electronic device which can be removably mounted onto a mounting rail which includes a locking element located in an underside of the housing. The locking element can be moved from a first position in which the housing can be fastened onto the mounting rail into a second position wherein the housing can be lifted off the mounting rail. The locking element is associated with a retaining element for retaining the locking element in the second position. The retaining element includes a spring section extending substantially parallel to the locking element and a retaining section extending substantially perpendicularly thereto.

Abstract: The object of the invention is to provide a slotted current acquisition coil according to the Rogowski principle in which the printed circuit board base of the measuring coil can be opened to insert an electrical conductor to be measured without having to interrupt the latter. To this end, the two printed circuit board segments linked together by a hinge are opened. Twisting a single-piece printed circuit board also opens the arrangement for inserting the conductor to be measured.

Abstract: The invention concerns a heterogeneous automation system (10) including a first physical network (15, 17, 20) in which all connected devices can communicate on the basis of a first communication protocol and at least one second physical network (52, 58, 59; 54, 56, 57, 60) which is connected to the first network (15, 17, 20) by way of a first control device (25, 30) functioning as a gateway, and in which all devices (54, 56, 57, 60) connected thereto can communicate on the basis of a second communication protocol, wherein the first and second networks and the first and second communication protocols are different. The object of the present invention is to provide a system and a connecting apparatus, by means of which communication is simplified, in particular upon start-up, configuration and maintenance of the system, in the entire automation system.

Abstract: A clamping spring device for an elastic clamp for attaching at least one electrical conductor includes a support and a clamping leg at an end of a spring leg. The support includes a freestanding edge. The clamping leg projects toward the support at an acute angle so as to form a receiving space between the clamping leg and the support. The receiving space narrows in a conductor insertion direction from a conductor insertion side toward a clamping point and is configured to receive the at least one electrical conductor inserted in a lengthwise direction. The clamping leg includes a clamping edge for clamping the electrical conductor between the clamping edge and the support at the clamping point. In the clamping position, the clamping leg is offset from the freestanding edge so that, when clamped, the at least one electrical conductor is bent around the freestanding edge, providing an interlocking effect.

Abstract: An electronic housing system is provided which includes at least two, especially plate shaped, electronic housings which can be snapped onto a mounting rail. The housing system includes a locking system including at least two housing portions, namely a starter unit and an end unit, and a key element. The starter unit is constructed as a key receptacle and the end unit is constructed as a lock complementary to the key element. The two housing portions can be locked with one another by rotation of the key element in the end unit. The locking system further includes an intermediate housing portion for positioning between the starter unit and the end unit, whereby the intermediate portion has an intermediate end unit for interlocking with the end of the key element, and an intermediate starter unit.

Abstract: An overvoltage protection means is described, with a first electrode (1), with a second electrode (2), with an air breakdown spark gap (3) which is present or which acts between the electrodes (1, 2), and with a housing which holds the electrodes (1, 2), when the air breakdown spark gap (3) is initiated an arc (4) forming between the first electrode (1) and the second electrode (2) As claimed in the invention, an overvoltage protection means is devised which is characterized by high line follow current extinguishing capacity, but which nevertheless can be implemented with a simple structure, by the fact that a third electrode (5) is assigned to the first electrode (1) and the second electrode (2) and between the first electrode (1) and the third electrode (5) a second air breakdown spark gap (6) is present or active, that the third electrode (5) is connected via at least one impedance, especially a varistor (7), directly or indirectly to the second electrode (2), and that after discharging the surge current

Abstract: A connecting device for connecting an electrical cable to an electrical device is provided. The electrical cable is connected to a plug connector, preferably of the RJ-45 plug configuration, for plugging into a corresponding socket of the electrical device. The connecting device is easy to assembly and ensures that the electrical cable and the plug connector are protected from mechanical damage. The electrical cable can be introduced into a housing together with the plug connector and maintained therein in this introduced state. The electrical cable, or the plug connector that is connected to the electrical cable, can be fixed to the socket or to the electrical device by means of snap-in elements which are located on the housing.

Abstract: A switch cabinet (1) comprises a case (2), several modules (3) and a supporting rail (4), the modules (3) being secured on the supporting rail (4). The disclosed switch cabinet (1) is characterised in that it is designed in functional blocks and modules, so that all modules (3) required by a machine and only those modules are mounted in the switch cabinet case (2).

Abstract: A control and data transmission installation and a process for transmission of safely-related data in a control and data transmission installation. In accordance with the invention, safety procedures of existing field bus systems, particularly the interbus, are improved in such a way that there is no need either for additional lines for the transmission of control signals or redundant, safety-related units. In the inventive control and data installation, a master control device and a number of bus subscribers each include respective safety-related devices for carrying out predetermined safety functions. The safety-related devices can communicate with each other by way of a field bus.

Abstract: An electronic control device has a power switch for driving and supplying an electrical drive for a fitting which is to be controlled. The invention provides for the power switch to be driven by an electronic computer assembly arranged inside the housing of the control device and which can be supplied with parameterization data for driving the electrical drive for the fitting.

Abstract: The invention relates to an apparatus for electronic monitoring of the supply current of modules connected to a bus, in particular for monitoring the supply current of bus devices of an automation bus system. The object of the invention is to provide an apparatus for electronic monitoring of the supply current of modules connected to a bus, which on the one hand, if required, carries out reliable isolation from the supply voltage, and simultaneously maintains the diagnostics capability for the purpose of fault locating. The invention achieves this by virtue of the fact that the apparatus has at least one device for detecting and at least one device for limiting and/or disconnecting the supply current.

Abstract: Electrical connector with a contact element and an additional spring element, the contact element having a contact zone formed by two contact legs and a bent spring area that applies a contact force to a mating contact element inserted into the contact zone, the additional spring element having two legs and a bridge which connects the legs. The contact force is increased by the additional spring element which is arranged relative to the contact element such that the stretching of the additional spring element is in the direction of the contact force.

Abstract: An overvoltage protection device (1) with a first electrode (2) which has a first arcing horn (3), with a second electrode (4) which has a second arcing horn (5), with an air-breakdown spark gap (6) which is active between the arcing horns (3, 5), and with a housing (7) which accommodates the electrodes (2, 4), has the two arcing horns (3, 5) shaped and arranged relative to one another such that they diverge from a lower ignition area (8) to their outer ends (9, 10), so that the air-breakdown spark gap (6) widens outwardly, proceeding from the ignition area (8). The overvoltage protection device (1) has a current carrying capacity which is as high as possible and a high network follow current extinction capacity with an overall height which is as small as possible by the first arcing horn (3) being made in the shape of a truncated cone and the second arcing horn (5) being located concentrically around the first arcing horn (3).

Abstract: Apparatuses for level adjustment are essential to make adjustments to signals between integrated circuits having differing signal levels in electronic circuits. To assure signal adjustment for a large number of signals, as occur in parallel busses, an apparatus for level adjustment is used. This digital level adjustment uses the I/O cells already present in the integrated circuits with an externally wired pullup resistor and an internal digitally programmed or constructed signal connection for controlling output drivers.

Abstract: An overvoltage protection element for diverting transient overvoltage, with two electrodes (3, 4), each of which has a current terminal (1, 2), an air-breakdown spark gap (5) between the electrodes (3, 4) and a housing (6) which holds the electrodes (3, 4). The overvoltage protection element with an air-breakdown spark gap (5), with reference to the operating voltage, the lightning surge current and network follow current carrying capacity behavior and the network follow current extinguishing behavior meets current requirements in a special way by the electrodes (3, 4) being located parallel to one another.

Abstract: A cable terminal or joint connection for making electrically conductive connection of a multi-core cable to an electrical device or to another multi-core cable, including a cable terminal component having a union nut and a wire receiving and guide part and including a device terminal component having a clamping and terminal unit which is provided with insulation piercing connecting devices and with terminal elements, and having a sleeve-shaped terminal body which is provided with an outside thread corresponding to the inside thread of the union nut. When the wire receiving and guide part is assembled with the union nut, the wire receiving and guide part is axially fixed via at least one slotted elastic locking ring in the union nut and the wire receiving and guide part is able to turn while in the axially fixed position relative to the union nut. Additionally, loss of the locking ring prior to assembly is prevented by fabricating the locking ring in one piece with the wire receiving and guide part.

Abstract: An electrical modular terminal, especially for latching onto a mounting rail, with a base terminal (2) and with at least one plug (3, 4), the base terminal (2) having a terminal housing (7) which made of insulating material, at least one terminal element (8, 9) located in it and at least two sockets which are electrically connected to the terminal element (8, 9) or to terminal elements (8, 9), the plug (3, 4) having a plug housing (13, 14) which is made of insulating material, at least one terminal element (15) located therein and a plug-in contact which is electrically connected to the at least one terminal element (15), and the at least one plug (3, 4) being mechanically connected by means of a fastener to the terminal housing (7) of the base terminal (2).

Abstract: An over-voltage protection element for limiting transient over-voltages and for discharging transient currents which includes at least two electrodes defining a spark gap in which an arc is formed when the over-voltage protection element is initiated. Each of the electrodes is composed of a conductive ceramic material.

Abstract: An electrical terminal, for example a terminal block which includes a terminal housing having at least one terminal element located within, such as a tension spring terminal, and with at least one current bar. The terminal housing also includes at least one lead insertion opening for inserting an electrical lead to be connected, at least one actuating opening for inserting an actuating tool for opening the tension spring terminal and at least one test plug opening for inserting a test plug which is laterally offset from the plane of the actuating opening. This electrical terminal enables a test tap while also having smaller size than conventional electrical terminals.