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Weidmüller - Hardly any branch of industry today can do without electronics and electrical connection technology. On the contrary, internationalization and technological change are progressing faster and faster. However, it is not only complex products that master the diverse challenges of a technological world. There would be no modern industry without cables and lines for the transmission of energy, signals or data. The same applies to the connection technology required for this. The Weidmüller company has specialized in the development of exactly this connection technology. She calls it Industrial Connectivity. The Weidmüller company has existed since 1850 and has its headquarters in Detmold. As a global industrial company, it has dozens of agencies on all continents and is one of the leading manufacturers in this field. As an original manufacturer or original equipment manufacturer, the company sets global standards in electrical connection technology. The products are characterized by precise processing and the highest quality. We at the eibabo® technology store have been selling the Weidmüller range with great success for many years. Complaints are extremely rare. The company's developments are used, among other things, in machine and vehicle construction, in the energy industry, by device manufacturers, in traffic engineering and in the building infrastructure. The Weidmüller product range includes plug and circuit board connectors, terminal blocks, protected assemblies, Industrial Ethernet components and relay couplers. The product portfolio also includes power supply and overvoltage protection modules for all connection types. Components for electrical installation and equipment labeling as well as basic I/O components round off the range. The innovative products of the Weidmüller brand are also available in the eibabo® shops of eibmarkt®. In addition to high-quality tools, you will also find feed-through terminals, installation terminals, protective conductor terminals, potential distributor terminals, end brackets, couplings, cross-connectors, voltage testers, network switches or mounting plates in numerous product categories.

Found in shop categories: 9

Heating actuator - A comfortably warm bath after getting up or a cool bedroom at night - automatically. Who does not want that? Modern building automation makes it possible. The interaction of room temperature controllers, heating actuators and valve drives offers almost unlimited possibilities. The setup can be set up in all rooms according to the needs of everyday life.What are heating actuators?If you want to regulate the temperature in the room, in the apartment or in the entire building automatically, heating actuators play a central role. In principle, these are switching actuators. However, these are not equipped with mechanical relays. Thermoelectric valves (low ohmic loads) work here, which use electronic circuits (Triac) to ensure closed hot water circuits or chilled water (chilled ceiling). As a result, these devices are noiseless and wear-free.How is room temperature controlled via a heating actuator?The control difference determined by a KNX room temperature controller, i.e. the difference between the setpoint temperature and the actual temperature, is converted into a command value telegram. It is sent to the corresponding channel of the heating actuator via the KNX bus. Connect the thermoelectric (conventional) actuator to the duct using a suitable cable (e.g. NYM-J 3x1.5). The heating actuator can switch directly (1 bit) or independently process a received 1-byte command value signal internally. With the latter, the KNX bus is relieved because there is no flood of control telegrams from the room temperature controller to the actuator. Only the calculated control difference is sent to the actuator as a 1-byte command value telegram (0-100%). This converts the information into switching signals (on/off) directly to the assigned heating channel. This is called pulse width modulation (PWM). TIP:Make sure there are enough control channels on the heating actuator, ideally at least one per room. This creates maximum flexibility when controlling. The following small example illustrates the rough functionality, not the actual, manufacturer-specific control algorithm:The current temperature (controlled variable) is 20 degrees Celsius. The desired room temperature is 25 degrees Celsius and represents the set value for the controlled variable (command variable). The difference between the desired room temperature (set value) and the current temperature (actual value) is the control difference. The control difference is 5 degrees Celsius and is used to determine the manipulated variable that influences the room temperature. Assuming the manipulated variable is 20%. This value is sent to the heating actuator in the form of a 1-byte telegram (0-255 = 0-100%). The value 51 is therefore transmitted to the actuator. The time for opening/closing the actuator is stored in the parameters of the actuator using ETS. You can find this time in the properties of the respective 230V AC or 24V DC thermoelectric actuator. For example, the actuator takes 2 minutes to fully open. With a command value specification of 20%, the actuator would switch on the valve drive for 24 seconds (20% of 2 min.) and switch it off for 96 seconds. This process is repeated until the room temperature controller calculates and sends another command value specification. Depending on the manufacturer of the actuator, you can integrate several actuators per channel.How do I find the right heating actuator?The selection of a suitable heating actuator is linked to certain requirements. Answering the following questions will help you make a decision:How many heating circuits does my system have?How many actuators do I have per heating circuit?Do I want to install the heating actuator centrally or directly in the heating circuit distributor?Do I want to protect the power supply of the device via a connection for auxiliary voltage?With what voltage do the actuators work?Which functions should the heating actuator have?Do I prefer a certain brand?and many more The range of functions of a heating actuator in particular can differ depending on the model. Things to keep in mind include the following:Is it controlled with 1bit (switching/PWM) and/or 8bit (continuous) control values?Is direct control with a temperature value possible via the KNX bus?Does the device have an integrated temperature controller?Are the setpoints saved in the event of a bus voltage failure?Is there an emergency operation if the cyclic command values fail?Are different operating modes available (comfort, night, frost protection, summer mode or winter mode)?Is there a short-circuit detection and a voltage failure detection?Does the device have a pump shut-off? High comfortDepending on the model, it is possible to set a minimum comfort temperature for the underfloor heating. An additional sensor measures the temperature of the floor and keeps it at your comfort level. This is very pleasant in barefoot zones such as a bath.Depending on what value you place on the individual properties, the range of products can be limited to just a few models.Can I connect a heating actuator directly to the actuators in my heating circuits?In the case of a decentralized installation, for example in the heating circuit distributor, models with L and N connections can be used for direct connection of the actuators.Are KNX actuators really bad?Thermoelectric actuators are not wear-free and should be replaced every year. That is why expensive KNX actuators, which combine the KNX actuator and actuator, have not caught on and are disappearing from the market.Image: Jung Triac 2336-REG-HZR-HE 6-fold KNX heating actuatorHow are thermoelectric actuators installed?Thermoelectric actuators (valve drives) are snapped or screwed directly onto the upper part of the valve used in the house. This connection with the valve spindle is usually made directly in the heating circuit distributor. You can use adapters made of PVC or metal to compensate for the manufacturer-specific distance differences between the drive and the upper part of the valve or the thread and the mount. In this way you ensure correct implementation of the manipulated variable.How do I prevent rapid wear and tear on my valve drives?The ETS parameter 'Flush' minimizes wear and tear on valves that are rarely used, for example in summer or in bedrooms. This function prevents rapid calcification of the heating valves. Good to knowWith actuators, a distinction is made between NC (normally closed) and NO (normally open). NC drives open when power is applied. In NO actuators, the current closes the valve. Please bear this in mind when planning your heating system, as it is ultimately your personal decision. In the event of a power failure or defect, NC drives close and you quickly notice a malfunction. These drives only consume electricity when heating. On the other hand, drives that open without current are more efficient during the heating period. In this case, switching off the pump by the heating actuator after the winter season would be advisable. Otherwise you would continuously use electricity to keep the heating closed by means of the NO actuators in the warm season.Who are the leading manufacturers of KNX heating actuators?The leading manufacturers of KNX heating actuators at eibabo® are, for example, ABB, Berker, Busch-Jaeger, EIBMARKT, Elsner, Gira, Hager, Jung, Lingg & Janke, MDT, Merten, Siemens and Theben. We have more than 25 years of experience in the field of building automation and have arranged the order of the products in this catalog accordingly. Price/performance, quality and range of functions are particularly good for the heating actuators listed first. Catalogue content:In this eibabo® catalogue Installation bus systems > Heating actuator for bus system you will find items from the following product groups:Item overview:Blind controlBlind functionCircuit controlConsumer controlCooling outletDIN railEnergy efficiencyEnergy efficientEnergy measurementExpansion moduleFan actuatorsHeater outputHeater plugHeater relayHeating actuatorHeating boxHeating controllerHeating thermostatic valveInstallation busLighting controlManual operationSocket controlStarter packSwitching actuator moduleSwitching outputThermostatic valveValve controlVentilation actuatorfrom the following manufacturers:Manufacturer overview catalogue Heating actuator:ABBAlre-itBerkerBusch JaegerEatonEltakoESYLUXGiraHagerJungMDTMertenSchneider ElectricSiemensTheben

Meter cabinet - complete - Do you operate a solar system on an open space or on a rented roof? Do you need an electricity meter or a grid connection, which serves as a connection between your system and the public distribution grid? Then we recommend our high-quality meter connection columns and converter cabinets. Even if you are looking for an inexpensive complete meter cabinet, this section of our eibabo® shop is just right for you.What does complete meter cabinet mean?As a specialist center for electrical engineering, the eibabo® shop offers meter cabinets and control cabinets for individual installation. These are empty and can be equipped by you according to your own ideas, taking into account legal regulations. In addition to numerous individual components for your electrical installation, you will also receive inexpensive and high-quality items that are already preconfigured. These include, for example, our system cabinets or our universal complete meter cabinets. These are already wired to a certain extent, meter locations are provided and connection rooms with busbars and distributor rows are available. TIP:By deciding in favor of such a product, you save time during installation and receive a distribution center that is precisely tailored to your needs. The complete meter cabinets are suitable for surface mounting, flush mounting or partially recessed installation.What are meter connection columns?You will also find ready-made meter connection columns in this catalogue. Such a system is also called an open-air column. This is a stationary control cabinet, usually anchored in the ground or on a foundation, with an integrated electricity meter. The meter connection pillar often serves as a transfer point between the distribution network operator (VNB) and the private energy distribution network.On the one hand, we offer you basic models and, on the other hand, systems that have been set up according to the technical connection requirements of the distribution network operator. The details of the respective distribution network operator can be found in the product description. The basic models correspond to the current technical application rules VDE-AR-N 4101 and 4102. These can also be expanded to ready-to-connect meter connection columns from the relevant distribution network operator using additional components. Depending on the size of the system, a direct measurement or a 'semi-indirect' measurement as a transducer is possible.In a nutshellIn contrast to direct measurement, currents and voltages in large systems cannot be recorded directly by the meter. Then a converter measurement is carried out. With the 'semi-indirect' measurement in the low-voltage range, a current transformer reduces the measured variable proportionally and makes it measurable for the meter again. In the case of medium voltage, an 'indirect' measurement is carried out by using an additional voltage transformer.All meter connection columns are usually characterized by the following properties:Suitability for outdoor installation for connection to the low-voltage network of the DSORobust housing made of glass fiber reinforced polyester, some including a burial baseinterchangeable door hinges with detachable doorssecurely lockable via an integrated locking cylinder, often with a multi-point lockOption for additional locking cylinders (e.g. from VNB locking system)Ventilation via labyrinthine ventilation channels (prevents the ingress of foreign bodies)high IP protection Meter connection pillars are usually used at property boundaries or when the network operator cannot access the building. In some cases there is no building on the property. Meter connection columns are also installed here.Image: GSAB 25.W250.001 transducer measurementThe eibabo® customer serviceYour satisfaction is very important to us. Control cabinets, complete meter cabinets, converter cabinets and other components for electrical installations are sensitive products that have to function safely and reliably in daily use. Therefore, in addition to a huge range and comprehensive consulting services, we also offer you:Recommendations based on around three decades of experiencecomprehensive buyer protectionmany secure payment methodsshort delivery timea Track & Trace shipment trackingworldwide shippinga fair complaint handling The articles are pre-sorted according to relevance for better orientation. To filter by special features, please use the detailed search. Catalogue content:In this eibabo® catalogue Meter panels > Meter cabinet equipped you will find items from the following product groups:Item overview:Base columnBooth distributorClosetClosetsComplete cabinetConnection roomCounter fieldEngineering centerFuse distributorHeat pumpJunction boxLow-voltage distributorMeasuring cabinetMeter boxMeter cabinetMeter connection columnMeter converter cabinetMeter space systemMultimediaMultimedia cabinetOutdoor cabinetPatch panelPedestalPower connectionStandard field cabinetStandard field distributorStanding cabinetSurface cabinetfrom the following manufacturers:Manufacturer overview catalogue Meter cabinet - complete:ABNEatonGSABHagerStriebel & John

Earthed plug - Electricity is essential in all areas of daily life these days. Whether household appliances, entertainment or even driving a car - nothing works without electricity. But not only the use of electricity is important, the secure connection of the electrical devices is also crucial. SCHUKO plugs are used here. These plugs are reliable and guarantee a stable connection between the devices and the mains. SCHUKO is the abbreviation for protective contact and a system of plugs and sockets. The SCHUKO plug is part of this plug-in system, which can be plugged in and unplugged under electrical voltage or load.What is a SCHUKO plug?SCHUKO is a system of mains plugs and sockets of the CEE 7/4 standard. These are also known as Type F connectors. Type F plugs are used, for example, in Germany, the Netherlands, Portugal, Austria, Spain, Sweden, Finland, Norway and many countries in Eastern Europe.Already knewThe grounded SCHUKO plug in its current form was patented in 1929 by Siemens-Schuckertwerke AG. This was preceded by a patent by Albert Büttner, who designed the basic shape of the plug and held all the necessary parts together with just a single screw.SCHUKO plugs and the associated sockets are usually equipped with a protective earth and are intended for use in 230-volt networks with a current of 16 amps. SCHUKO plugs and sockets are unpolarized. That means: outer conductor and neutral conductor are randomly connected. In addition to the outer conductor and the neutral conductor, the system has a green-yellow protective conductor, which takes over the protective earthing with two flat contacts at the top and bottom of the plug. When plugged into a socket, the SCHUKO plug closes the connection cavity of the socket and thus prevents contact with conductive components when making contact. First, a ground is established between the flat contacts of the plug and the grounding terminals located in the socket. Only then do the phase conductor connections and the neutral conductor connections come into contact with one another. And it is precisely this fact that is special about the SCHUKO system and gives it its name: the protective contact connection diverts dangerous voltages as soon as the electrical circuit is closed by the other two poles. This design with leading protective contact ensures that there are no dangerous voltages on accessible parts of the device.Additional lateral guide slots in the socket are required for reasons of stability. These enable the use of large and heavy SCHUKO plugs, for example with a built-in transformer or timer.Image: Mennekes 10837 Schuko plugBasic information on the typification of plugs and socketsThe plugs and sockets that exist worldwide are numerous and correspondingly different. Their design and structure is often historical and adapted to the conditions of the power grid in the respective region. Worldwide, we distinguish between two standards for wired AC transmission. On the one hand, this is the 230 volt standard with a frequency of 50 Hertz / 60 Hertz. On the other hand, it is the 110 volt technology with a frequency of 50 Hertz / 60 Hertz. Based on this, individual countries and manufacturing companies began to offer their own connectors. This led to a high degree of individualization. The introduction of a globally standardized plug system failed on the one hand because of political sensitivities, wars and conflicts and, of course, because of the two already established transmission standards. Because there would be a risk of devices being damaged or short circuits or fires occurring if a device were connected to a network with a voltage other than its nominal value. As a result, the development of adapters and transformers was accepted instead to achieve cross-system international compatibility.NoticeThere are currently 15 plug / socket standards worldwide, referred to as plug types A to O. Here in Central Europe, types C, E and F are used, some of which are also compatible with each other.The Type-C plug is an unearthed two-pronged plug that used to be standard in most European countries as well as in the countries of the former USSR. This type is considered the forerunner of today's French type E and the German type F. Type C plugs are still often found in the form of flat plugs on many devices such as fairy lights, floor lamps, razors, hair dryers and other small household appliances. In the international CEE system, this plug shape is referred to as the CEE 7/16 standard. Type C plugs fit perfectly into a Type F SCHUKO socket.With the French type E plug, there is a grounding contact for the protective conductor in the center above the pins for the phase conductor and neutral conductor. The counterpart to this is a pin that protrudes from the French Type E socket. Classic plugs of this type are usually round and do not fit into the Type F SCHUKO socket because the lateral guide grooves and the recess for the earthing contacts attached at the top and bottom are missing. However, these are only very rarely found and are increasingly being replaced by CEE 7/7 plugs, which fit both type E sockets and type F SCHUKO sockets.The German Type F SCHUKO plug is widely used throughout Europe, as well as in Russia, Belarus and Ukraine. This is characterized by the grounding clamps at the top and bottom and by a guide groove on the right and left. In the international CEE system, this plug shape is referred to as the CEE 7/4 standard and is not compatible with the French Type E socket due to the lack of a recess for the grounding pin. This is why it is now considered obsolete. In the course of a homogenization of the European market, this plug is often replaced by the CEE 7/7 plug, which is a hybrid E/F plug. The CEE-7/7 SCHUKO plug is therefore the current, grounded and universal continental European standard:with grounding clips on both sides to match with Type F socketwith a socket contact to accept the ground pin of the Type E socket by the wayThe socket of the SCHUKO socket is set back by 15 mm so that there is no risk of electric shock if the plug is partially inserted. Both the SCHUKO system and the French counterpart are designed for a nominal voltage of 230 volts at 50 hertz. All components are designed for 16 amps as standard. At 230 volts, this corresponds to an output of 3,680 watts.What is a contour plug?In connection with SCHUKO plugs, we often hear the term contour plug. A contoured plug is a two-pole (i.e. unearthed) plug that has the necessary recesses for the German grounding clamps, the guide grooves and an additional hole for the French protective conductor contact on the rounded edge of the plug. The plug thus fits into both systems, but does not use the protective contacts.At eibabo® you will find not only classic SCHUKO connectors, but also 2KT SCHUKO connectors (for difficult conditions), duroplastic connectors, flat connectors, flat cable connectors and flat connectors. Rubber plugs and PVC SCHUKO plugs as well as assembly plugs, angled plugs and wall plugs are also available for the SCHUKO system. In addition to the protective contact plugs of the SCHUKO system, we also carry protective contact plugs of the Swiss system and the English plug system. Please noteSCHUKO plug connections are not always compatible with other safety plug systems. SCHUKO plugs from all approved and well-known manufacturers are offered here in the shop, including ABL Sursum, Berker, Bachmann, Merten, Mennekes, Gira, Busch-Jaeger and Apsa. Catalogue content:In this eibabo® catalogue Domestic switching devices > Plug with protective contact you will find items from the following product groups:Item overview:Angle connectorBelgium clutchBelgium plugConnectorConnectorsDevice connectorElamide connectorEuropean plugFrance clutchFrance plugFrench plugHousehold plugProtective contactRubber plugSafety plugSchuko plugSocketsSolid rubber plugfrom the following manufacturers:Manufacturer overview catalogue Earthed plug:ABLBachmannBalsBerkerBusch JaegerE+P ElektrikElsproGiraHartingHirschmannJungKleinhuisLegrand BticinoMennekesMertenMeyerSchulteWalther

Radio transmitter - Would you like to automate an existing electrical installation at low cost without having to open walls and lay many lines or cables? Do you want to retrofit or expand your smart home? Then both radio transmitters and radio receivers belong on your shopping list. Find out more here about the possibilities that radio transmitters and radio receivers offer you. Radio technology has become an integral part of our everyday life. Think of radio signals, television and mobile phones, the Internet and many other things.WLAN or Wi-Fi?WLAN is a wireless radio network limited to a local area. Wi-Fi is more of a brand name of a consortium of companies (Wi-Fi Alliance). For example, devices labeled 'Wireless Fidelity' receive WiFi.In the field of radio transmitters, there are numerous device types and standards, such as Wi-Fi, Bluetooth, NFC and cellular.What are radio transmitters?A radio transmitter is an electronic device that generates radio waves. In the field of electrical engineering, the device mainly transmits control signals, switching signals, error messages and status messages. In telecommunications, radio transmitters are used to transmit or send data using an antenna. The transmitter converts the information into a high-frequency alternating current, which is radiated from an antenna as radio waves. Already knew?The Solt transmitter of the Hungarian 'Kossuth Rádió' is the most powerful radio transmitter in Europe. The program can be received in the USA and South Asia. Depending on the type of device, the radio waves are emitted in a specific band of the electromagnetic spectrum. The division into bands serves to fulfill a wide variety of communication tasks. This includes the transmission of voice, images or very general data. The transmitter uses the current of its power source to provide alternating current according to its bandwidth in the required wavelength. This is the frequency at which the alternating current changes direction per second. The electromagnetic waves or radio waves are radiated outwards as a weak signal via a carrier medium (e.g. the air) via the antenna. A corresponding receiver reverses this process and amplifies the incoming signal in order to be able to process the actual message or data. A transmitter can be a separate device or an electronic circuit in another device.Image: Eltako FSM61-UC wireless transmitter moduleHow is a radio transmitter structured?A radio transmitter requires an energy source that supplies the device with power and the energy for transmission. An electronic oscillator creates the radio waves and a modulator inserts the actual data into the radio wave. It does this through small variations in the properties of the carrier wave. A high-frequency amplifier increases the power of the signal. This increases the range. And finally, an antenna tuner matches the impedance of the transmitter to that of the antenna. This makes the energy transfer to the antenna efficient and prevents what is known as a 'standing wave' (reflection of the energy from the antenna back to the transmitter).How important are radio transmitters in building automation or the electrical installation?You use radio transmitters when there is no power line or bus line at a certain point in your installation. There you position a radio receiver, which receives the signals from the transmitter and takes over the desired tasks. These can be switching actions and control functions or the display of information. Radio transmitters are therefore an alternative when flexible installations are desired. Radio transmitters are also suitable if you want to retrofit existing analogue installations and device controls. Radio transmitters are a simple and inexpensive solution for home automation and are used to increase living comfort.You can get a large selection of radio transmitters in the eibabo® technology storefor flush mounting (radio transmitter modules, universal transmitter)for operation (radio buttons, KNX remote controls, hand-held transmitters)for control (wireless weather stations, multiple wall switches, room temperature controllers, wireless window contacts and other sensors) from all well-known manufacturers. These include top brands such as SOMFY, Rademacher, Warema Sonnen, Eltako, Schalk, Sommer and Jung. You will also receive devices and accessories from Hager, Eberle Controls, Berner Torantriebe and EVN Lichttechnik. We also offer elegant wall transmitters that are suitable for flexible installation on wallpaper, glass, mirrors, tiles or wood. Or you can select immediately functional wireless motion detectors, wireless switches or wireless sets from our range.What is the range of radio transmitters in electrical engineering?The range of radio transmitters can vary greatly. This depends both on the radio technology used and on the environmental conditions. Ranges between 20 meters and one kilometer are usually specified. The specifications in the product information about the maximum range are usually values under optimal conditions. These exist when there is a direct line of sight between the transmitter and receiver without obstacles and the area is not affected by interference signals from the same or a neighboring frequency band. Please keep in mind that these conditions rarely apply and the range will therefore be lower in practice. TIP:When installing radio transmitters, allow for a range reserve of 25%. The reserve is not only used to compensate for a lower range due to current obstacles. If further obstacles are added later (e.g. additional walls or growing trees), the devices can still be used.What is an I/O radio module?I/O radio modules are so-called transceivers, a combination of transmitter and receiver. These therefore have signal inputs and signal outputs. This makes it possible to control or monitor systems with just one radio link. In addition to digital interfaces, some models also offer analog inputs for transmitting sensor values and limit values.What do I have to consider when buying radio transmitters?If you want to use radio transmitters, you need additional receivers that pick up the signals, process them and react accordingly. This can be, for example, switching actuators, universal displays or radio-controlled sockets. To ensure that communication between transmitter and receiver works, all components are parameterized using the standardized 'Engineering Tool Software (ETS)'. In this way, each device knows under which conditions it should send or receive commands and how it has to react to changes. The ETS software is available from www.knx.org and is a tool that you need to commission and link KNX devices. Don't worry: programming skills are not required. The ETS is also suitable for laypersons who are interested in the logic of the KNX. Please make sure that your radio transmitter can take over the transmission tasks you want and carry them out correctly. We therefore recommend that you carefully check the parameters and functions for the ETS provided by the manufacturer before purchasing. Catalogue content:In this eibabo® catalogue Optical and acoustic signalling equipment > Radio transmitter you will find items from the following product groups:Item overview:Access controlAdjustment toolAwning radio sensorBlind controlBuilt-in transmitterButton inputCall forwardingControl unitExternal controlFour-channel hand-held transmitterInterval transmitterMicrohand transmitterRadio remote controlRadio transmitterRain sensorReed contactRemote controlSecuritySetting aidShutter buttonSingle-channel hand-held transmitterSun protectionTransceiversUniversal transmitterWind automaticWindow contactWireless technologyWireless wall buttonfrom the following manufacturers:Manufacturer overview catalogue Radio transmitter:Berner TorantriebeBusch JaegerEberleEltakoEthermaEVNGiraGlen DimplexGrotheHagerHamaJungNovarPhoenixRademacherSchabusSchalkSchneider ElectricSiemensSomfySommerWAGO

Fuse terminal - Are you looking for high-quality and space-saving fuse terminals for your control cabinet? Are terminal blocks the same as fuse blocks? Here you can find out for which use the different fuse terminals are suitable. In the eibabo® technology store, you can obtain fuse clamps inexpensively and in large quantities from all well-known manufacturers. Shipping is worldwide. Fuse terminals are among the most important components in a control cabinet and have several functions. The terminals are snapped onto the top-hat rail of the control cabinet and form the connection between the distribution level and the installation level.What is the difference between fuse terminals and terminal blocks?The terminal block is a feed-through connection for one or more cables in the control cabinet. Depending on the application, it may be beneficial to protect a pass-through connection with a fuse. Fuse terminals consist of a base that takes on the function of the classic terminal block. A fuse is used in an additional fuse link carrier. The fuses may vary depending on the model and use case. Some variants have permanently installed circuit breakers. A fuse terminal block is therefore a terminal block with a separate fuse.Why are fuse terminals one of the most important components in the control cabinet?A large number of cables and lines arrive in a control cabinet. Depending on the complexity of the system, this can be several hundred pieces. These cables and lines are often very rigid and have a large cross-section. A direct connection to the respective fuses, actuators or other devices would therefore be very difficult. At this point, terminal blocks with and without fuses are used. The cables and lines arriving in the control cabinet are first clearly laid out on the terminals. The individual flexible wires can now be routed from the terminals to the respective devices in the control cabinet. This flexibility offers advantages during installation.Image: Wago 281-611 fuse terminalEach connection now established has a specific function. This function is usually defined in a circuit diagram. Even after the control cabinet has been installed, the individual functions must remain traceable. A good overview of the system should be ensured for later extensions, change requests and maintenance work. If you would like to make changes after a while, these can now be done very easily by changing the individual wires. The handling of the rigid supply lines is therefore no longer necessary.You can only connect two wires to many modular installation devices. Here, too, the clamps play to their advantage. If, for example, you have planned several cables for a modular installation device, you can provide these with clear jumpers on the fuse terminals. Control work and measurements can also be carried out very conveniently directly on the terminals. Relocating lines and troubleshooting are made much easier.The safety clamps in detailFuse clamps can be constructed somewhat differently depending on the manufacturer. It is divided into single-level terminals and multi-level terminals. You can only connect one incoming and one outgoing line in the single-deck terminal. Several lines can be connected in multi-level terminals. For example, use a three-tier terminal for a cable with three wires. In this way you connect the protective conductor as well as the L line and the N line. This saves a lot of space and is mainly used in the private environment and in the smart home area. It is usual for the protective conductor contact to be made directly by the clamp connection with the top-hat rail. Other models have a connection point for a protective conductor.Another distinguishing feature is the different ways of attaching a cable. With a screw terminal, the respective wire is attached to the terminal using a classic screw connection. That's safe, but more time consuming. A spring-loaded terminal makes the electrical contact using a mechanical spring. The spring consists of a bent copper contact with a hole. The contact is clamped with a pointed tool and the conductor can be inserted. If you remove the clamping tool, the spring is relieved and the conductor gets stuck.Good to knowFuse clamps are suitable for fastening solid conductors and flexible strands. Both variants are permitted. The use of ferrules makes handling flexible wires easier, as they do not accidentally fan out.There is usually a pressure point for releasing this clamping connection, which can be pressed with a screwdriver or another narrow object. If you use particularly thin wires, insulation displacement terminals can be used. With these, contact is made through a small cut through the insulation.Cables and wires are selected in different cross-sections depending on their function and area of application. This affects the selection of the appropriate fuse terminal. There are suitable fuse terminals for the common cable cross-sections. Which cross-sections are suitable in each case is indicated directly on the terminal. Fuse terminals typically offer the option of bridging the L conductor and the N conductor using several terminal blocks, sometimes on different levels. The matching cross bridges are also available here in the shop. well thought outSome terminals offer fields for labeling. Use this option to keep track of the installation at all times. In addition, a distinction is made between fuse terminals in the design of the neutral conductor contact. Models marked 'NT' have special contacts for connection to an N busbar. When using a busbar, you need a clamp for the infeed as well as support blocks for secure fixing at the beginning and end of the busbar. When using 5-wire cables, you can also use multi-level terminals to connect the phase conductors.What does push-in connection mean for a fuse terminal block?A distinction is currently made between fuse terminals with three connection variants. These are the screw connection, the spring-cage connection and the push-in connection. Which connection variant you choose depends on the area of application, the costs and the expected time savings during installation. The push-in connection is the latest of these three variants. This is similar to the tension spring connection. As with the tension spring, a spring presses against the insulated conductor. The connection is therefore vibration-proof and maintenance-free. In contrast to the tension spring connection, the advantage is the tool-free installation. The wire is simply inserted into the terminal and a spring automatically locks. A standard screwdriver is sufficient to loosen the connection. This means that wiring can be carried out in a significantly shorter time. This applies in particular to cores with solid conductors. Wires with flexible conductors can also be fixed with this method using wire end sleeves. TIP:Please use square crimped ferrules for this. These offer more surface area for the spring to open. Front crimping pliers with square crimping are particularly suitable for working in hard-to-reach places and tight spaces. Small gauge conductors may not be strong enough to open the spring. Here the support of the spring opening with a screwdriver is necessary.Are there other accessories for fuse terminals?Additional accessories are available for most fuse terminals. These include the cross-bridges and busbars already mentioned, test plugs, fuses, separator plates, end plates, feeds or end blocks.Why are fuse terminals open 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. Fuse clamps are not manufactured according to this grid dimension, but as narrow as possible. The narrower a terminal, the more terminals can be installed on a specific area of the DIN rail. Since fuse terminals are typically mounted directly next to each other on the DIN rail, there is no risk 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.Are there fuse terminals with a defect indicator?Some models show defects. For example, some fuse terminals have an integrated LED, which is powered by the current present. If there is a defect, the LED does not light up and the installer can quickly localize the problem. Catalogue content:In this eibabo® catalogue Terminal blocks > Fuse terminal block you will find items from the following product groups:Item overview:AC circuit breakerActive power meterBlade fuse terminalConnection clampControl circuit breakerDevice circuit breakerDirect current machineElectricity meterEnergy meterFour-wire meterFuse clipFuse terminal blockGlass fuse clipGround terminalGuard clampMulti-level clampPlug-in circuit breakerProtective terminal blockReactive power meterScrew cap clampSpring clipSpring terminalTerminal blockTerminal blocksTerminal stripThree-phase meterTransducer counterTransfer blocksfrom the following manufacturers:Manufacturer overview catalogue Fuse terminal:HagerPhoenixSiemensWAGOWeidmüllerWieland

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