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Wieland - It was 1910, more than 110 years ago, when the 'Elektrische Industrie Fritz Wieland' company started production. Initially, signaling devices for measuring power losses and junction boxes were manufactured. With the invention of a divisible slotted terminal, Fritz Wieland helped his company achieve a breakthrough. The component that became known as the Wieland clamp proved to be of particularly high quality and was the first safe electrical cable clamp connection that has proven itself a million times over. But it didn't stay with the terminal and the company grew into an internationally active solution provider and market leader for pluggable electrical installations in building technology and into a provider for safety and automation technology. The independent subsidiaries Wieland Electric and STOCKO Contact operate under the Wieland Holding umbrella. With a market share of 80 percent, Wieland Electric, for example, is the market leader in pluggable building installations with its gesis system. The company's product range now includes over 20,000 different components for automation technology and building installation. This means that the company and its products fit very well into the range of eibabo® shops from eibmarkt®. The areas of application of the components can be found in industry as well as in building and lighting technology, in wind turbines or in network communication with IIoT in machines. The company's headquarters are in Bamberg. However, with its numerous branches, Wieland feels at home in all markets worldwide. Despite a strong international orientation, the majority of the products are still manufactured in Bamberg. Further production facilities were set up in Canada, the Czech Republic and Serbia. As a well-known online mail order company, the eibabo® technology store sells, among other things, installation terminals, plug parts, feed-through terminals, socket parts, monitoring devices, fuse terminals, terminal blocks, connectors, protective conductor terminals, isolating terminals and numerous other products from the Wieland range.

Found in shop categories: 9

Through terminal - Which feed-through terminals should you use for your control cabinet? Are terminal blocks the same as feed-through blocks? Find out here what the differences are between feed-through terminals and what they are used for. In the eibabo® technology store you can get feed-through terminal blocks from all well-known manufacturers such as ABB, Eaton, Eberle, Hager, Metz, Phoenix, Schneider Electric, Siemens, Spelsberg, TE Connectivity, WAGO, Weidmüller, Wieland and Wöhner at great prices and in large quantities. We deliver our range worldwide.Feed-through terminals fulfill several functions and are among the most important components within a control cabinet. It is mounted on the DIN rail. Feed-through terminals are connecting elements between the incoming cables and lines of an installation and the actual control cabinet installation.What is the difference between feed-through terminals and terminal blocks?Feed-through terminals are terminal blocks. 'Terminal block' is a generic term that also includes other types of terminals. These include, for example, fuse terminals and relay terminals. Other terms describe the way a terminal is constructed or its ability to connect the conductors. In these contexts, one often hears about one-tier terminals, three-tier terminals, spring-loaded terminals, push-in terminals or screw terminals. We would like to briefly discuss some of these types in the following sections.Why are feed-through terminals indispensable components in the control cabinet?Feed-through terminals offer the necessary flexibility in the control cabinet to connect rigid incoming cables and lines to the relevant fuses, actuators or other devices. A direct connection without feed-through terminals does not make sense. A clear installation would not be possible. First, the cables and lines are clearly laid out on the terminal blocks. They then lead them from there to the devices in the control cabinet. As a result, the entire installation remains flexible because there are connection points and nodes for checking and changing the system structure.Image: Phoenix PT 2.5-3L feed-through terminalEach connection that is made takes on a function previously defined in the circuit diagram. The installation of the system and the function of individual connections remains traceable. This makes later additions, repairs and maintenance easier. If you want to make changes, these can be done by reconnecting individual wires. The rigid supply lines remain unaffected.And there are other advantages: For example, you can only connect two wires to many modular installation devices. The feed-through terminal blocks offer further advantages here. An example: A fuse is intended to protect several lines. However, you can only connect the cores of one line. In order to also integrate the other lines, you can create clear bridge connections on the feed-through terminals. The electrician can also carry out insulation measurements and other control work directly on the terminal blocks. Troubleshooting is made much easier and faster.What different feed-through terminals are there?Each manufacturer builds the feed-through terminals slightly differently. However, the principle is the same. There are single-level terminals and multi-level terminals. While you can only connect one line in the single-level terminal, several incoming and outgoing lines can be installed in multi-level terminals. Use a three-tier terminal for a three-wire cable. The is designed for connecting the protective conductor, the L conductor and the N conductor. This arrangement saves an enormous amount of space in the control cabinet. Three-tier terminals are mainly found in the control cabinets of private households and in smart home installations. TIP:On some models, the protective conductor has no connection point for the outgoing line. The protective earth contact is made directly by the clamp connection with the DIN rail. Another feature that distinguishes feed-through terminals is the way the wires are fastened. The screw terminal fixes the respective wire with a screw connection. This method takes a comparatively long time, especially when the plant is complex. A spring-loaded terminal makes electrical contact with a mechanical spring. This consists of a bent, flat copper contact. The wire must be inserted through a hole in the copper contact. This is only possible if the contact is clamped with a pointed tool. When the clamping tool is removed, the spring pulls back and the wire is jammed. The connection is released in the same way. The push-in connection is another fastening variant, similar to the spring-loaded terminal. Here, too, a spring presses against the wire. In contrast to the spring-cage connection, installation is tool-free and therefore even faster. The wire is inserted into the spring shaft of the feed-through terminal and the spring locks automatically. If you want to loosen the connection, you need a pointed tool. A small screwdriver is usually sufficient, which bends the retaining spring to the side and loosens the wire. This method saves a lot of time with cores with solid conductors. Wires with flexible conductors can also be attached using wire end sleeves using this method.Solid and flexible veinsYou can connect cables with solid cores and flexible strands in feed-through terminals. Both variants and combinations are permitted. Flexible cores can easily fan out. The use of ferrules makes handling easier with spring connections.The attachment of the wire using cutting terminals is rather rare. Use this variant if your veins are particularly thin. Here, the contact is made through a small cut in the insulation.Depending on the function and area of application, cables and wires with different cross-sections are used in the electrical installation. This affects the feed-through terminals. Appropriate feed-through terminals are available for all common cable cross-sections. Whether a clamp can be used for a specific cross-section is indicated on the clamp. It is usually possible to bridge the L conductor and the N conductor using several feed-through terminals, sometimes on several levels. Suitable cable bridges are available here in the shop.markLabeling the lines helps with orientation, especially when a new employee or another electrical company takes over the system. Some terminals have labeling fields. We recommend using this option and labeling all devices and connections in a meaningful way.The design of the neutral conductor contact is another distinguishing feature. In addition to models for classic wiring, there are feed-through terminals with which an N busbar can be used. The neutral contact on these terminals is designed accordingly so that the connection can be made with one hand. When using a busbar, you need an additional terminal for feeding. To securely fix the rail, use suitable support blocks or the fastening levers on the end clamps at the beginning and end of the row. Longer rails are additionally fixed every 20 cm. To be able to use cables with five cores, use multi-level terminals to connect the outer conductors.How to use feed-through terminals in the KNX area?In addition to the classic feed-through terminals, you can get special terminal blocks for low-voltage or KNX use. These have a different color and can therefore immediately be distinguished from other terminal blocks. This also contributes to order and clarity in the control cabinet. In terms of function, these terminal blocks hardly differ from conventional terminal blocks. You can connect cables with a cross-section of up to 1.5 mm2 to these terminals.Why are feed-through terminals not closed on one side?The available space in the control cabinet is specified in modular widths (HP). These provide information about the capacity of a control cabinet. Feed-through terminals are not manufactured according to this pitch, but as narrow as possible. The narrower a terminal, the more terminals can be installed on a specific area of the DIN rail. Good to know:Feed-through terminals are not closed on one side. The missing cover saves a little space. In relation to the length of a top-hat rail, more terminals can be mounted. Since feed-through terminals are mounted directly next to each other on the DIN rail, there is no danger of touching the contacts on the open sides. Without a side cover, a terminal is narrower. A cover is only attached to the last terminal in a row.Which installation aids and which accessories are available for feed-through terminal blocks?For the construction of a control cabinet, you receive numerous well thought-out components that simplify your work. For feed-through terminals, for example, the cross-bridges and busbars already mentioned are available. In addition, you will receive separator plates and end plates, covers, feeds or end blocks as well as test plugs, fuses, labeling fields and other components.  Catalogue content:In this eibabo® catalogue Terminal blocks > Feed-through terminal block you will find items from the following product groups:Item overview:Base clampBolt clampChangeover relayCompartment clampConnecting combsConnection moduleConnection technologyDistribution blockFeed terminalFour-level clampLightning arrowMarshalling boxMini clampMotor connection terminalMotor output terminalMulti-level clampMulti-wire terminalNeutral terminalPotential clampRelay terminalSocketSpring clampsSpring clipSwitching relayTerminal block connectorThermal voltage terminal blockThrough terminalUniversal clampfrom the following manufacturers:Manufacturer overview catalogue Through terminal:ABBEatonEberleHagerMetzPhoenixSchneider ElectricSiemensSpelsbergTE ConnectivityWAGOWeidmüllerWielandWöhner
Multi-level installation terminal - Which multilevel installation terminals are there and what functions do they have in the control cabinet? Are multi-level installation terminals the same as feed-through terminals? What's the difference? How is the assembly done? Here you will find answers to many questions. In the eibabo® technology store you can get multi-level installation terminals from all well-known manufacturers such as ABB, Hager, Phoenix, Siemens, WAGO, Weidmüller and Wieland at top conditions and in large quantities. Delivery is worldwide, fast and safe.Installation multi-level terminals are among the most important components within a control cabinet and fulfill several functions. The terminals represent connecting elements between the incoming cables and lines of an installation and the actual control cabinet installation. The assembly is carried out on the DIN rail.What are installation multi-level terminals?Installation multi-level terminals are multi-pole terminal blocks. The term 'terminal block' not only includes multi-level installation terminals, but also, for example, feed-through terminals, fuse terminals and relay terminals. Surely you have already heard or read about single-level clamps and triple-level clamps. These are other common names for feed-through terminals and tier terminals. When it comes to spring-loaded terminals, push-in terminals or screw terminals, the focus is on the type of wire attachment. But these terminals can also be counted among the multi-level installation terminals. The main feature of the installation multi-level terminals is the potential entries arranged one above the other.What is the difference to a feed-through terminal?The differences between feed-through terminals and multi-level terminals are small and mainly lie in the number and arrangement of the potential entries. A simple feed-through terminal usually only has one potential, while tier terminals can have several potentials. This saves space compared to feed-through terminals, since the feed-through terminals are arranged next to each other as individual terminals. A clear assignment of the different cores is guaranteed by the colored conductor entry openings in multi-level terminal blocks. Tier terminals are therefore more complex feed-through terminals and are often equipped with special functions for building installation, for example with N disconnect terminals, equipotential bonding terminals or distribution feed terminals.How important are multi-level installation terminals for control cabinet construction?With multi-level installation terminals, you achieve enormous flexibility in control cabinet construction. Rigid incoming cables and lines are clearly laid out on the terminals. You thus create flexible connection points to connect the actuators, fuses or other devices in the control cabinet with individual wires. This keeps the entire installation flexible, as there are nodes for testing and changing the entire system. A direct connection without installation multi-level terminals would not be clear and would lead to considerable effort in the event of changes.Image: WAGO 2003-7641 Multi-level installation terminalWith the implementation of a well-structured circuit diagram, each link created in this way takes on a comprehensible function. The installation of the system remains clear. Additions, repairs and maintenance in the future are made easier. Changes to the system are always possible by reconnecting individual wires. The rigid supply lines remain untouched.For a better overviewYou can attach labeling fields to some tier terminals. We recommend using this. Label all devices and connections sensibly. Matching labeling fields are available here in the shop.But this structure offers other advantages. During maintenance work, the electrician can carry out his insulation measurements and other control work directly on the tier terminals. This saves time and money when troubleshooting. For example, many DIN rail mounted devices (REG) only have two contact points for connecting the cables. With the use of installation clamps, you can expand this if necessary. An example: You want to protect several lines with one fuse. Unfortunately, you can only connect the wires from one line directly to the fuse. What can you do? In order to link further lines, establish clear jumper connections on the installation multi-level terminals.How can the cables be attached to the installation multi-level clamps?Each manufacturer builds the multi-level installation terminal blocks slightly differently. However, the principle is the same. While single-level terminals connect only one line as simple feed-through terminals, the installation of several incoming and outgoing lines is possible in multi-level terminals / tier terminals. A three-tier terminal block is designed for the connection of the protective conductor, the N line and the L line. The arrangement in tiers saves a lot of space in the control cabinet. Multi-level terminal blocks are used very frequently, especially in the smaller switch cabinets in private households and in smart home installations. TIP:If a terminal block does not have a connection point for the outgoing protective conductor, snapping it onto the DIN rail ensures 100 percent contact with the protective conductor contact foot. The types of attachment for the cables represent a special distinguishing feature. There are screw terminals, spring-loaded terminals and push-in terminals.With the screw terminal, a screw fixes the respective wire. This method is comparatively time-consuming, especially when dealing with a large system with many connections. Fastening with a screw must be done carefully so as not to damage the solid or flexible cable too much.With the spring-loaded terminal, the electrical contact is made with a mechanical metal spring. The spring is in the form of a curved flat contact with a hole. The wire must be put through the hole to connect. This is only possible if the spring is stretched with a pointed tool. The line will bind as soon as the tool is removed and the spring relaxes. The connection is released in the same way.The push-in connection is a variant of the spring-loaded terminal. Here, too, a spring-loaded metal contact presses against the wire. Installation is tool-free. The wire is inserted into the spring shaft of the multi-level terminal block and the contact is locked directly by the spring force. You need a tool to loosen the connection. Using a small screwdriver, bend the spring contact to the side and the wire will come loose. These connections save a lot of time with cables with solid conductors. Wires with flexible strands can also be fixed using this method, but they should be stabilized with a ferrule.The attachment of the cores using insulation displacement terminals is rare and is only used if your cable is particularly thin. With this method, the conductive contact is made by cutting the wire insulation.Special features of the neutral conductor contactIn addition to models with screw attachment and spring clamps, there are multi-level terminals where you can use an N busbar. With these terminals, the neutral conductor contact is designed in such a way that a busbar can be connected with a flick of the wrist. In this case you need an additional terminal for feeding. To ensure that the rail is held securely, use suitable trestles at the beginning and end of the row. Some clamps also offer mounting levers. Please also fix longer rails every 20 centimetres.Are there different tier terminals for the different cable cross-sections?Cables and lines with different cross-sections are used in electrical installations. This affects the tier terminals. Appropriate terminals are available for all common cable cross-sections. The suitability for certain cross-sections is indicated on the terminals. In addition, there is the option of bridging the N lines and the L lines via several tier terminals, sometimes on several levels. Suitable cable bridges are available here in the shop.Why are multi-level installation terminals open on one side?As you may know, the space available in the control cabinet is specified in modular widths (TE). The specification of the pitch units provides information about the capacity of a control cabinet and helps with the purchase decision. Installation multi-level terminals do not correspond to this grid dimension, but are manufactured as narrow as possible. So the narrower the individual terminal is, the more terminals you can install on a certain area of the DIN rail. Good to know:A pitch unit is 18 millimeters according to DIN 43880:1988-12. The installation width of the devices is 17.5 millimeters (deviation plus 0.5 millimeters) and its multiples. Installation multi-level terminals are typically mounted directly next to each other on the mounting rail. There is therefore no risk of touching the contacts on the open sides. This saves material in production and some space. Without a side cover, a terminal is slightly narrower. Only the last terminal in a row is covered.What are N disconnect terminals?Electrical systems must be checked regularly. The insulation measurement (e.g. between neutral conductor and protective conductor) is an essential part of such a test. As a result, possible insulation faults, which can cause fires and the associated damage to persons or property, are detected at an early stage. To do this, the neutral wire of each circuit must be disconnected. The use of neutral conductor disconnect terminals is therefore necessary in this country in public facilities, workplaces in trade and industry and in fire-endangered premises.  Catalogue content:In this eibabo® catalogue Terminal blocks > Multi level installation terminal block you will find items from the following product groups:Item overview:Cage clampDouble clampFeed blockFeed-through terminal blockFuse plugGround terminalInsta clampInstallation clampMulti-level clampPhase terminal blockSingle clampSpring clampSpring clipSpring terminalTerminal blockThree-wire terminalTier clampTripod clampUniversal clampfrom the following manufacturers:Manufacturer overview catalogue Multi-level installation terminal:ABBHagerPhoenixSiemensWAGOWeidmüllerWieland
End-intermediate plate - Don't you agree that you shouldn't skimp on safety when it comes to electrical installations in your own home? With terminal blocks or distribution terminals, you organize your electrical installations and a complex circuit diagram is created for supplying your house with electricity. The connections in the terminals are largely exposed so that the installer can easily reach them. To ensure that the system is well secured after the work is completed, these terminals are provided with cover caps, thus preventing open access to the flowing current. With end and intermediate plates for terminal blocks or distribution terminals, you protect yourself, other people and your electrical installation, because you can also separate individual circuits or parts of your installation from one another with separator plates. As a full-range supplier for electrical installations, we offer you a large selection of end and intermediate plates from all common manufacturers such as Wago, Phoenix, Weidmüller or Wieland at low prices and mostly immediately available in the eibabo shop.Catalogue content:In this eibabo® catalogue Terminal blocks > Endplate and partition plate for terminal block you will find items from the following product groups:Item overview:CoverCover plateCover segmentCutting discDepartment divider panelEnd and intermediate plate for terminal blockEnd plateEnd plate for terminal blockEndplate and partition plate for terminal blockInsulating panelIntermediate plateIntermediate plate for terminal blocksLidPartition platePartition wallReducer plateSeparating partitionSeparation plateSpacerSpacer capSpacer plateSpring clampsTerminal block dividerTerminal Block End PlateTerminal blocksTerminal coverTerminal panelUniversal platefrom the following manufacturers:Manufacturer overview catalogue End-intermediate plate:ABBHagerPhoenixSchneider ElectricSiemensSpelsbergWAGOWeidmüllerWeidm?llerWieland
Circuits monitoring device - Devices for monitoring safety-related circuits are also referred to as emergency stop switching devices or safety relays. But what is the difference to a normal switching relay? You will find out in the following sections. Rely on quality and equip your safety-related circuits with high-quality emergency switching devices from the eibabo® online shop.Image: Pilz PNOZ XV2 emergency stop switching deviceWhat are safety relays?Despite automation, people are always involved in the implementation of technological processes. Safety at work plays a central role in this. By selecting suitable protective measures, the risk of endangering the health or life of people in the working area of a machine can be reduced. The most important protective elements include safety relays. Their task is to switch off the power supply in the event of a fault, danger or defect. This protects the life or health of the operator and prevents damage to the machine, the facility or the system.Originally, safety circuits were equipped with a single electromechanical contactor and combined with a circuit-connected safety switch. However, this variant did not offer complete protection. If, for example, the contacts of the contactor stuck together, the machine or system continued to run despite the safety switch being actuated. The solution to this problem was to add an additional contactor to the circuit. This already reduced the probability of errors, but still did not provide complete protection. Electronic devices were therefore developed which were equipped with at least two relays and a microprocessor system. A safety relay is therefore protected several times and automatically checks with each switching cycle whether its own safety device is still working properly. Even if a component fails, the safety device remains effective. The function of these safety relays henceforth made it possible to eliminate the risks associated with the use of a single contactor while knowing the status of input devices and output devices.Where are circuit monitoring devices used?The classic place of use for circuit monitoring devices is industrial systems. These devices are used wherever a workplace is potentially dangerous due to moving parts of a machine. The following safety circuits are the most common:The emergency stop switchThe emergency stop button is a large, robust and strikingly designed button that you can use to manually activate the safety relay and bring a machine to a standstill in the event of a hazard.Tip for saving:Complementary to circuit monitors are emergency stop switches and other components to create a complete safety device. Benefit from our low prices and save costs with combined shipping.Two-hand operationAs the name suggests, a circuit in this circuit is only closed when you press two different buttons with both hands. This is to prevent you from accidentally reaching into a rotating machine, for example. As soon as you release one of the two buttons, the safety relay stops the machine.protective doorsDangerous working areas are often provided with protective doors. Opening such a protective door triggers the safety relay, which then immediately interrupts the circuit. The machine stops.Light grids / light barriersWhere no protective doors or other physical barriers can prevent access to dangerous areas, the safety regulations are implemented using light grids or light barriers. If an object enters the monitored danger area, the safety relay is triggered and the machine stops.How is a safety relay structured?The typical structure of the safety relay uses a classic combination of 3 contactors. This system redundancy provides increased device reliability. Two relays ensure safe contact switching. Each is driven by one of the two input circuits. The operation of these circuits is not only determined by the signal present at their outputs, but is started by the starting relay. Between its outputs there is a control circuit (also a monitoring circuit) which checks the position of the actuators to be controlled and switched. What does that mean? After switching on, the device carries out a self-test. The input devices are checked first. If their circuits are closed, a safe state has been reached. The output devices are then checked. Here, too, the safety relay waits for a start signal, upon receipt of which the output devices are activated. The safety functions of the relay are now also activated and the device is ready to fulfill the required safety tasks.What are the advantages of programmable safety relays?There are applications where a conventional safety relay would not suffice. In such cases, using a programmable safety relay can be an excellent alternative. This is especially true in more complex systems where using a traditional relay would be cumbersome or impossible. Programmable safety relays are also referred to as control devices for circuit monitoring or programmable logic controllers (PLC). In a nutshell:Programmable logic controllers are devices that allow you to implement more safety functions than individual relays. While a separate safety relay is used for each device by default, one PLC can secure multiple devices. This saves a lot of space in the control cabinet. You can also use it to control processes that can be changed or corrected at any time. The programmable safety relays consist of input modules and output modules as well as a central unit. A processor executes the control algorithm stored in memory based on the data read from the input modules. The control signals are then sent to the output modules. These forward the signals to the corresponding actuators, which are connected to the relay outputs. Programming is done using a computer and the appropriate software or via the built-in keyboard or display. PLCs are most commonly found in modern security systems where sophisticated communication and complex data exchange takes place.Based on your requirements, you can now assess whether an emergency stop relay or a PLC is right for your application. Here you can get high-quality products from well-known brands such as Pilz, Siemens, Weidmüller, Wieland, Dold, Rockwell, ABB and many others.  Catalogue content:In this eibabo® catalogue Relays > Device for monitoring of safety-related circuits you will find items from the following product groups:Item overview:Compact power supplyContact extensionDC power supplyEmergency stop relayEncoder moduleIsolation guardLight barrier guardLight curtainMuting functionOff-delayedOutput expansion devicePress safetyPress safety valvePress valveProtective door monitoringProtective door monitoring deviceProtective door relayProtective gate guardRelay moduleSafety controlSafety relaySafety switching deviceSafety switching relaySecurity moduleSecurity technologyTransfer pointValve monitoring deviceValve monitoring modulefrom the following manufacturers:Manufacturer overview catalogue Circuits monitoring device:ABBDoldEatonElotechEuchnerIfm ElectronicLeuzePepperl + FuchsPeterPhoenixPilzRockwellSchmersalSchneider ElectricSickSiemensStahlWeidmüllerWieland
Protective conductor terminal - You take care of the structure of your control cabinet and use various terminal blocks to organize your electrical installation. If you are still missing protective conductor terminals to complete your system, then you have come to the right place in this catalog from our shop. Here you can get all common variants from well-known manufacturers at top conditions. Protective earth terminals belong to the series terminals and were developed for electrical distribution installation. These are capable of accommodating fine-wire, multi-wire or solid conductor cross-sections. Cables with attached ferrules can also be installed in protective conductor terminals.What is a protective conductor?The protective conductor or PE conductor (PE stands for protective earth) is primarily used to connect the masses of electrical devices and conductive elements to earth. The protective conductor is easily recognizable by its green-yellow color.Already knewThe nationwide establishment of the protective conductor in Germany, Austria and Switzerland took several decades. More than 50 years passed from the first proposal to introduce a 'neutral conductor' around 1914 to the uniform definition of the green and yellow marking in 1965.An example: Let's take the classic NYM-J 3x1.5 mm² sheathed cable. Two wires carry current here, the one with the blue insulation and the one with the brown insulation. The third wire is the green-yellow protective conductor, which normally does not carry any current. If a current-carrying phase touches a metallic housing, a so-called residual current flows through it. If there is no protective conductor, the housing is not grounded and the residual current cannot flow. If a person touches the housing, the current is returned to earth via their body. This not only results in an unpleasant discharge, but in some cases leads to burns or, in extreme cases, to an electric shock, which can lead to cardiac arrest. However, if a protective conductor is properly installed, the enclosure is connected to earth through it. The residual current can thus flow off via the protective conductor.In the control cabinet, the incoming protective conductors are sorted and fastened via protective conductor terminals.What is a terminal block or a feed-through terminal block for protective conductors?Terminal blocks fulfill several functions and are among the most important components within a control cabinet. It is mounted on the DIN rail. In general, terminal blocks are connecting elements between the incoming cables and lines of an installation and the actual control cabinet installation. Technically, the special protective conductor clamps do not differ from the clamps for external conductors or neutral conductors, but they are specially designed to accommodate the green-yellow protective conductor. TIPMany ground terminals also have a coloured, mostly green-yellow housing. Their purpose is therefore unmistakable and the terminals in the control cabinet can be recognized as such at first glance. Feed-through terminals are also often mentioned. 'Terminal block' is a generic term that also includes other types of terminals. These include, for example, fuse terminals and relay terminals. Other terms describe the way a terminal is constructed or its ability to connect the conductors. In this context one often hears about one-tier terminals, three-tier terminals, spring-loaded terminals, push-in terminals or screw terminals.Why should I use protective conductor terminals?Feed-through terminals for protective conductors are required connecting elements in the control cabinet between the rigid incoming cables or lines and the following control cabinet installation. These offer the necessary flexibility to connect the protective conductors to the end devices easily and clearly. A clear installation would not be possible without the feed-through terminals. In practice, the incoming cables and lines are clearly laid out on the terminals and the individual wires then lead from there to the devices in the control cabinet. This keeps the entire installation flexible. There are connection points and nodes for checking and changing the system structure.Image: WAGO 2002-3207 three-level terminalEach protective conductor connection that is made assumes a protective function specified in the circuit diagram. This means that both the installation of the system and the function of individual connections are always traceable. This makes later maintenance, additions or repairs easier. Changes are possible at any time by reconnecting individual lines. The rigid supply lines remain unaffected.What is the difference between protective conductor terminals?Each manufacturer builds the protective conductor terminals slightly differently. However, the principle is the same. There are single-level clamps and multi-level clamps. While you can only connect one protective wire in the single-level terminal, several incoming and outgoing lines can be installed in multi-level terminals. A multi-level arrangement saves an enormous amount of space in the control cabinet.Another distinguishing feature is the way the wires are attached. With a screw terminal, the respective wire is fixed with a screw connection. This method is comparatively complex and takes a lot of time. Especially when the system is complex, you save a lot of time by using a spring-loaded terminal. This variant makes the electrical contact using a spring. The spring usually consists of a bent, flat copper contact. The protective conductor must be inserted through a hole in the copper contact. This is only possible if the contact is clamped with a pointed tool. When the clamping tool is removed, the spring pulls back and the protective conductor is jammed. This connection is released in the same way. Push-in mounting is another connection variant. This is similar to the spring-loaded terminal. But unlike the spring-loaded connection, installation is tool-free and therefore even faster. The protective conductor is inserted into the spring shaft of the terminal and the spring locks automatically. You need a tool to loosen the connection. Bend the retaining spring to the side with a small screwdriver and the protective conductor can be loosened. This method saves a lot of time, especially for cores with solid conductors. The use of ferrules is recommended for cores with flexible conductors (strands). Fastening the conductors using insulation displacement terminals is rather rare. Use this variant if your conductors are particularly thin. Here, the contact is made through a small cut in the insulation. Cheaper in a setProtective conductor terminal blocks are available individually or in sets of 25, 40 or 50 at an attractive price advantage. The cross-section of the protective conductor also affects the protective conductor terminal. Here in the shop you can get the right protective conductor terminals for all common cable cross-sections. Whether a clamp can be used for a specific cross-section is usually stated on the clamp.Why are protective conductor terminals not closed on one side?The space in a control cabinet is almost always tight. The storage capacity of a control cabinet is generally specified in module widths (HP). Protective conductor terminals are not manufactured according to this grid dimension, but as narrow as possible. The width is determined by the design of the electrical connection and the cable cross-section. Since the terminals are mounted directly in line, there is no risk of touching the contacts on the open sides. Without the second side cover, a terminal is slightly narrower. A cover is only attached to the last terminal in a row. The narrower the individual terminal is, the more terminals can be accommodated on a specific section of the DIN rail.You can buy protective conductor terminals quickly and cheaply in the eibabo® technology store ? your competence center for smart homes and electrical installations. We offer branded products from ABB, Dehn, Hager, Phoenix, Pollmann, Schneider Electric, Siemens, WAGO, Weidmüller, Wieland in large quantities. We deliver our range worldwide.  Catalogue content:In this eibabo® catalogue Terminal blocks > Ground terminal block you will find items from the following product groups:Item overview:Actuator terminalBase clampsBuilt-in housingCage clampConnection technologyFeed terminalFeed-through terminal blockFour-level clampGround railGround terminalGround wire disconnect terminalInformation technologyInitiator terminalInstallation clampInstallation clampsMulti-level clampProtective conductorShield connection technologySingle clampSpring clampsSpring clipTerminal blocksTerminal stripTest disconnect terminalsThree-wire terminalThrough terminalTwin clampUniversal clampfrom the following manufacturers:Manufacturer overview catalogue Protective conductor terminal:ABBDehnHagerPhoenixPollmannSchneider ElectricSiemensWAGOWeidmüllerWieland
Contact insert - Would you like to transmit data, signals and services with a variety of connection technologies? Then universal contact inserts are the right components for you. This allows you to create compatible and flexibly combinable connections. The connection techniques can be different for the contact inserts. In addition to screw and press connections, quick connection technologies are also available, with which you can reduce the installation time enormously. Whether fixed-pole or modular, the right connection technology is available for every application. Combine the right modules for your application from our extensive range. Simply browse through our catalog and find the right contact insert for your signal, data and power transmission as well as for pneumatic applications. Use one of over 20 payment methods and have your items delivered quickly and securely worldwide.Catalogue content:In this eibabo® catalogue Connectors > Contact insert for rectangular connectors you will find items from the following product groups:Item overview:AdapterAxial screw connectionCable connectorCoded contact insertCompressed air plugConnectorConnector mounting plateContact carrierContact carrier insertContact insert for industrial connectorsContact insert for rectangular connectorsContact insert setCrimp connectionCrimp splice protectionFibre optic conductorFixed pole insertInsertModular connectorModule carrierNetwork technologyPen insertPneumaticPneumatic pinPower moduleSingle moduleSocket contact insertSocket moduleWinding connectionfrom the following manufacturers:Manufacturer overview catalogue Contact insert:ABBHartingIlmeLappODUPhoenixStäubliTelegärtnerWaltherWeidmüllerWeidm?llerWieland
Cross-connector-jumper - Connecting bridges are plug-in contacts that were developed to connect terminal blocks or terminal blocks. Depending on the version, the bridges have different numbers of poles with which you can simply couple the desired number of terminal blocks. Typically this is two to fifty poles per bridge. Simply select the jumpers that are right for you here in the eibabo online shop. The comb jumpers, also known as cross jumpers, are supplied with a plastic cover over the metal pins and correspond to the flammability rating according to V0. The distance between the poles corresponds to the standardized grid dimension for the component, and the maximum charging current for each bridge is also specified and must be observed. The simple plug-in bridge connection saves you a lot of time because you don't have to strip individual cables to use them as a bridge. Plus, the installation looks neat and changing components is a breeze with plugging and unplugging.Catalogue content:In this eibabo® catalogue Terminal blocks > Cross-connector for terminal block you will find items from the following product groups:Item overview:Box connectorBridgeBridge for terminal blockBridging combCable bridgeChain bridgeConnecting barConnecting bridgeConnectorConnector plugCross connectorCross connector/jumper for terminal blockCross-connector for terminal blockDistance pieceFixed bridge for terminal blockInsert jumperJumper combPhase busbarPlugPush-in type jumper barReducing connectorSeparating bridgerSeparating plugSwitchable jumperTerminal block bridgeTerminal block cross connectorWire commoning chainWire jumperfrom the following manufacturers:Manufacturer overview catalogue Cross-connector-jumper:ABBFinderHagerHartingMetzMurrelektronikPhoenixSchneider ElectricSiemensSpelsbergWAGOWeidmüllerWeidm?llerWieland
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