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Eberle - The traditional German company Eberle Controls was founded in 1932 by Dr. Phil. Otto Eberle and can look back on many decades of successful history. It was the first specialist company for industrial relays in Europe and quickly developed into a manufacturer of industrial and bimetallic temperature controllers. Over the years, Eberle Controls expanded its business areas and began developing and producing heating and air conditioning controllers and relays for electronic and household appliances. Today, Eberle Controls belongs to Schneider Electric, an internationally active group that offers product and system solutions for household appliances as well as air conditioning and security components. As a result, you can use its worldwide sales structures effectively and, in addition to your own development, you also have access to international know-how. At the Nuremberg location, production is very traditional "Made in Germany" and focuses on solutions for temperature regulation, air conditioning and control in the field of building services. The focus is on convenient operation and saving energy. A central part of the corporate philosophy is a modern design of all production areas. Not only the employees benefit from this. This also ensures the required quality and achieves the highest level of delivery reliability. The optimization of these workflows essentially contributes to the fact that Eberle Controls is a very reliable and flexible trading partner of the eibabo® technology store. As a leading supplier of electrical material and smart home components, we also rely on the latest technology and proven Eberle quality. In the eibabo® shops from eibmarkt® you will find, for example, load shedding relays, room temperature controllers, actuators, radio transmitters, clock thermostats, hygrostats, memory relays and frost monitors from the Eberle brand.

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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
Load shedding relay - Have you connected several devices with high power in your electrical installation that would overload your main connection if used simultaneously? Then you should use a load shedding relay. If you are able to prioritize the devices, this component can ensure that the subordinate device is always disconnected from the power supply as long as the priority consumer is in operation. Such a circuit is also referred to as a priority circuit and the relay as a priority switch. As soon as the prioritized consumer no longer consumes any power, the relay switches over and releases the power capacity that has been released to the subordinate consumer or consumers. Order your inexpensive load shedding relays from well-known manufacturers such as ABB, Eberle, Eaton or Doepke in the eibabo shop and prevent your installation from being overloaded.Catalogue content:In this eibabo® catalogue Devices for distribution board-/surface mounting > Load shedding relay for distribution board you will find items from the following product groups:Item overview:Load monitoring deviceLoad monitoring relayLoad relayLoad shedding relayLoad shedding relay for distribution boardLoad shedding relay for series installationOvercurrent relayOverload relayPower relayPower switchPriority switchWater heaterfrom the following manufacturers:Manufacturer overview catalogue Load shedding relay:ABBDoepkeEatonEberleHager
Room thermostat - The correct setting of the room temperature is an important aspect for well-being in our apartment or house. If you are not sure which room temperature controller you should choose, here are a few tips and hints.Are you also one of those people who react sensitively to temperature changes, who quickly freeze or sweat? Setting an incorrect temperature can cause discomfort and even health problems. With a room temperature controller, you are able to keep the temperature in your home constant. You don't have to worry about rooms that are too warm or too cold. In the office, warmer room temperatures are not only beneficial for employees, but also have a positive effect on productivity. If the temperature is too cold, employees get sick more often and cannot concentrate as well. It is all the more important that the temperature in the office is right. With a room temperature controller, you can easily regulate the temperature yourself and ensure a pleasant working atmosphere.Tips for searchingThis catalog is located in the main category 'Electrical Material'. Here you will find analogue room temperature controllers, programmable devices, room temperature inserts and actuators. If you are looking for KNX room temperature controllers for your building automation, please use our search or visit the main category 'Smart Home'.There are many different types of room temperature controllers on the market. We will help you to find a device that is suitable for your needs.What types of room temperature controllers are there?There are different types of room temperature controllers. These differ in structure, mode of operation, type of operation and price. The simplest room temperature controllers are the analogue devices. These are easy to use and inexpensive to purchase. The temperature is usually regulated steplessly by means of a rotary disc. Some models also have an ON/OFF switch. The installation is usually flush-mounted. There are also models that can be surface-mounted. With digital controllers, enter the setpoints directly. There is no dial here. If these are programmable, set the room temperature for different days and times in advance. Such a device then adheres to the specified configuration over the programmed period of time. So-called 'smart' room temperature controllers offer many individual options for setting the temperature. These can be freely programmed and provide interfaces to building automation systems. It is usually operated using buttons on the device or a touch screen.Image: Gira 039603 room thermostatWhere should the room temperature controller be installed?A few things should be considered so that a room temperature controller can measure and regulate the temperature precisely. Basically, such a device determines a difference between the current room temperature and a target temperature. This can be done mechanically or via a sensor. Corresponding signals are then passed on to the heating, which lead to an increase or decrease in the room temperature. Attach the controls so that an accurate measurement can be made. Incorrect measurements mean that the heating is activated too early or too late and the room temperature does not match the desired temperature.Which circumstances could lead to incorrect measurements?The room air cannot circulate around the room temperature controller. Heat builds up in niches. The air exchange is also low behind cupboards or curtains. Here the controller may measure too high a temperature or react too slowly to changes. A measurement too close to the radiator is also critical. It gets warm too quickly here and the controller switches the heating off again. As a result, the desired temperature is not reached in the room. In contrast, installing it in areas with a lot of drafts or near a window that is often open will result in readings being too low. Here it can happen that the room gets too warm or a lot of heating energy is wasted. The controller does not switch off the heating correctly.AssemblyFlush-mounted room temperature controllers can be installed in a normal switch box or a cavity wall box. Surface-mounted devices are attached directly to the wall. In any case, please follow the manufacturer's instructions exactly when wiring. This is the only way to ensure trouble-free functionality.Please pay attention to the following during installation:a mounting at about 1.60m above the floorgood air circulation without heat build-up or draughtsa mounting location without direct sunlightattachment to an internal wall Which temperatures are ideal for well-being?The ideal living room temperature depends on personal preferences and the time of day. As a rule, however, the temperature in living rooms should not be below 16 degrees Celsius, otherwise the risk of catching a cold or other health problems increases. During the day temperatures can be a bit higher, while the bedrooms are usually cooler. In Germany, the following values are considered optimal:Living room: 20°C to 22°CChildren's room: 20°C to 22°C (18°C at night)Bedroom: 16°C to 18°CBath: 20°C to 23°C (depending on usage and time of day)Kitchen: 19°C  TIP:Each additional degree of room temperature increases the heating costs. Use the possibilities of modern heating systems and lower the room temperature in unused rooms by around 5°C during this time. To save energy, you can schedule heating breaks, for example. Adjust the devices so that the room temperature is lower when you are not at home. If you are away for a few days, reduce the temperature to 15°C or slightly lower. Based on this, you will reach the feel-good temperature after your return within 1 to 2 hours.Do room temperature controllers require a power connection?In order to work correctly, a room temperature controller needs a power supply. Unless it is a device with radio technology, you need a cable from the heating circuit distributor to the controller. This serves to supply the controller with power and to connect an actuator. You therefore need a cable with at least four conductors and a corresponding cross-section, of which the yellow-green protective conductor is used exclusively for protective earthing. When buying, make sure that you have a 24V or 230V system.How do I set the exact temperature with analogue room temperature controllers?Some analogue room temperature controllers with a rotary disk do not show the room temperature in °C, but rather a scale, often from 1 to 6. It can be a bit difficult to find the optimal temperature here. However, there is a reason for this. The manufacturers do not label the heating controllers with degrees, since other factors influence the room temperature. Deviations arise, for example, from accumulated heat or draughts. If this is the case, the temperature on the controller does not match the temperature in the room and differences arise. The scale roughly corresponds to the following temperatures:* (asterisk - if present) corresponds to approx. 5°C and is designed as frost protectionLevel 1 corresponds to about 12°CLevel 2 corresponds to around 16°CLevel 3 corresponds to around 20°CLevel 4 corresponds to around 24°CLevel 5 corresponds to around 28°C If it is colder on the room temperature controller than in the rest of the room due to drafts, the set level 3 may already correspond to room temperature level 4. In the opposite case, the room temperature may only be 16°C, although for the controller it is in a niche Accumulated heat has already reached 20°C. The heating is switched off too early. In these circumstances you have to try something to find the optimal setting position.With a modern heating system, you can regulate the temperature in your immediate vicinity individually. In the eibabo® technology store you will find numerous room temperature controllers that you can integrate into your heating system depending on the requirements or equipment. When buying, pay attention to quality. Here in the shop you can get top devices from manufacturers such as Busch Jaeger, Eberle, Gira, Jung, Theben, Devi and dozens more.  Catalogue content:In this eibabo® catalogue Stats, switches and controllers > Room thermostat you will find items from the following product groups:Item overview:Control unitCooling systemElectronicsExternal controllerFloor temperature controlGlass heaterHeating technologyInfrared heaterMaster controllerMechanicallyOutside temperature controllerPanel heatingProtection temperature controllerRadiant heatRemote sensorRoom temperature controllerRoom thermostat insertSpace heatingSwitch rangeTemperatureTemperature sensorTemperature switchText displayTiled stove temperature controllerUnderfloor heatingVentilation controlWet room controllerWet room temperature controllerfrom the following manufacturers:Manufacturer overview catalogue Room thermostat:ABBAlre-itBerkerBusch JaegerCarelDelta DoreDeviEberleEGOEHT AEGElsoEthermaFricoGiraGlen DimplexGlenHagerHeliosJumoJungKraemer & KrausLegrand SEKOMaicoMertenRademacherSiemensSomfyStiebel EltronThebenVitramoWindowMaster
Installation relay - What is a relay and how does it work? What types of relays are there? Where are relays used? And which relay suits your project best? Here you can learn more about switching and controlling electrical circuits. Installation relays are used in many different applications. You will find relays in domestic electrical installations, in electrical appliances, in commerce and industry, and in vehicles.A look into historyThe first relay was invented by the American J. Henry in 1831 and was based on the electromagnetic principle of operation. Henry used the relay in his university lab as a 'gimmick' to entertain his students. However, it was not yet possible to switch gears. The first switching relay was invented by Samuel Morse in 1837. Morse refined Henry's device and adapted it to transmit signals (the Morse code) down miles of wire. This was also the basis for the telegraph.Did you know that the world's first computer was also built with only relays? It was a development by Konrad Zuse, which was presented in 1941. A lot has happened since then and relays are no longer used in modern computers. Nevertheless, the relay is still an important and popular component in electrical installations today. Think, for example, of switching on and off the lighting in the stairwell. The circuit works regardless of which floor you are on. However, there are numerous other areas of application. That is why different installation relays are also available in the eibabo® shop. Simply browse through our virtual catalogue. You will surely find some high-quality and inexpensive installation relays that arouse your interest.Image: Eltako ER12-110-UC switching relayWhat are relays?Relays are components within electrical installations of all kinds. They are mainly used as circuit breakers and control switches in electrical devices or are used as important components in many control processes. There are numerous types of relays, which differ in detail. The manufacturers develop the devices for special tasks and adjust the triggering characteristics accordingly. Relays that are often bought in this catalog are coupling relays, power relays, switching relays, interface relays, semiconductor relays and many more. The basic operating principle of a relay is to open and close circuits or contacts by reacting to electrical quantities such as current or voltage.How are relays differentiated?Relays are classified according to various criteria. These include:the type of physical inputs to which the relay respondsthe area of application that the relay assumes in control systemsthe structure of the device design and the principle of operationthe switching capacitythe shape and sizeand some others A relay consists of three main elements:entering / entering a valuethe intermediateof execution / actuation by actuator If we look at the type of physical input variable, we distinguish between electrical, thermal, optical, mechanical, magnetic or acoustic relays. NoticeNot all relays work with fixed physical quantities. Differential relays, for example, react to the difference in values. Polarized relays respond to a change in sign of a specific value. The acquisition of the measurand is the primary element of the relay. This converts the input value into another physical quantity. The receiving element can have different designs depending on the purpose of the relay and the nature of the physical quantity. In the case of a latching relay or a voltage relay, the receiving element consists of an electromagnet. In the case of a pressure relay, this can be a membrane or bellows. The sensing element of a level relay is usually a float and so on.The intermediate element compares the input value with the specified limit value of the device and, if it is exceeded, transmits an impulse to the executing actuator.The actuator transmits the pulse from the relay to the working circuits. Each relay basically contains a control circuit and one or more operating circuits. Depending on the type of actuator, the relays are divided into contact relays and contactless relays. Contact relays act on the outgoing circuit with the help of electrical contacts. Their closed or open state allows either full closure or full mechanical break of the work circuit. Contactless relays act on the working circuit by a sudden change in parameters in the control circuit. This is achieved via resistance, capacitance, inductance or a change in voltage level or current level.How does an installation relay work?Depending on the requirement and application, relays are simple or complex. However, the basic functional principle does not differ significantly. In the center is the coil with an iron core. When current flows through the coil, an electric magnetic field builds up. A movable, ferromagnetic armature reacts to this magnetic field and is attracted. This change in position connects two contact springs with each other and the so-called working contacts in the relay close. In this case, the relay acts as a closer. In some designs, so-called break contacts are opened when the magnetic field is created. These are called openers. Combinations of openers and closers are also possible. These are changeover contacts or changeover contacts.Already knew?If the coil of a relay is suddenly de-energized, high voltage peaks can occur. Therefore, depending on the model, resistors or diodes are used to prevent these voltage peaks from flowing back into the control circuit. Sensitive components remain protected.As soon as the coil no longer generates a magnetic field, the armature is returned to its original position by spring force. The make contacts are no longer closed and the break contacts are no longer open.What are Solid State Relays?More and more relay functions are currently being taken over by semiconductor circuits, so-called solid-state relays (SSR). A solid state relay is an electronic device that turns on and off a high power circuit with low voltages. There are no mechanically moving elements in this type of relay. The device consists of:a sensor that responds to an input signala solid-state electronics with high-performance circuitry Solid state relays can be used with both direct current and alternating current. With the help of thyristors and transistors it is possible to switch currents of several hundred amperes. Compared to electromechanical relays, semiconductor relays have a significantly higher switching speed. Solid-state relays are less suitable for switching under short-term overload conditions. Compared to electromechanical relays, solid state relays offer the following advantages:smaller dimensionshigh switching speedsnoiselesspowerfulmore energy efficientspark-free circuitmaintenance freelong lifetimelow sensitivity to adverse conditions What should I look out for when buying an installation relay?In the eibabo® shop there is a huge selection of different relays with numerous specifications. Choosing the right installation relay can be difficult. Before you buy, you should determine the function of your circuit and then define the task of the relay. Then select a suitable relay for your project. Decision criteria include:What kind is the physical input quantity?Will the device be subjected to vibration and shock?Where will the installation take place?Are dust, moisture or temperature fluctuations to be expected?What is the switching voltage and the switching current?Which current magnitudes and voltage magnitudes occur?What is the expected switching frequency?What requirements do I place on the durability of the relay?Are special functions or additional programming required?  Notice:When switching active and inductive loads, opening the circuit for the contacts is the most difficult. In this case, arcing occurs, which puts a lot of strain on the contacts. The switching relays offered by eibabo® are high quality, inexpensive, versatile, reliable and universally applicable. The best-known manufacturers in our range are ABB, Doepke, Dold, Eaton, Eberle, Eltako, Finder, Hager, Jung, Schalk, Schneider Electric, Siemens and WAGO.  Catalogue content:In this eibabo® catalogue Devices for distribution board- / surface mounting > Installation relay you will find items from the following product groups:Item overview:AC contactorAC voltage relayBoiler relayBuilt-in distributor deviceCan relayCoupling relayDC contactorExpansion moduleInstallation relayInstallation switching relayMemory relayModular installation devicePower relayPreset relayRelay interfaceRelay stationSwitching relayUniversal voltage relayfrom the following manufacturers:Manufacturer overview catalogue Installation relay:ABBDoepkeDoldEatonEberleEltakoFinderHagerJungSchalkSchneider ElectricSiemensWAGO
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
Installation contactor mdrc - Do you want to know why an installation contactor hums? Find out here. Or would you like to activate and stop large consumers using a remote switch? Then you need a high-quality and inexpensive installation contactor from the eibabo® technology store. With us you will find a large selection of high-quality installation contactors from many well-known brands. We carry installation contactors (REG) and accessories from the following manufacturers: Schneider Electric, Eberle Controls, Siemens, Eltako, ABB Stotz S&J,Finder, Eaton (Moeller) and Legrand (BT).All offered installation contactors are characterized by:excellent processing qualitylittle to no hum during operationquiet switching operationsvery good industrial qualityhigh switching capacitylong lifetime What is an installation contactor in electrical engineering?An installation contactor is an electrical device that is primarily used to protect electrical systems and devices from overload and short circuits. Installation contactors are mainly used in building installation for automation. In many cases, this involves the automatic switching on and off of electrical devices and systems. The installation contactor assumes the task of a remote switch, which switches a larger current with a lower current. In the area of electrical distribution installation and control panel installation, installation contactors are used, among other things, as series installation devices (REG) for mounting on DIN rails or support rails (35 mm) according to DIN EN 50022.What are the typical areas of application of an installation contactor?An installation contactor can be used, for example, to switch heating systems on and off automatically to protect them from overheating. Other automation processes include switching and controlling three-phase motors, lighting systems, ventilation, pumps, cable pulls, gates, shading systems and other building automation drives.How does an installation contactor work?Installation contactors usually work with operating voltages of 230V or 440V and with actuating voltages of 230V or 24V. There are also versions where both voltages are 230V. In addition to the housing, an installation contactor consists of an excitation coil, coil core, metal armature, switching contacts and armature return spring. There can be multiple of these essential functional elements in the installation contactor. The device consists of a control circuit and a load circuit. If current flows through the control circuit, the load circuit closes and also carries current. In the idle state (OFF), the switching contacts do not touch. TIP:If a contactor hums, this is not yet a cause for concern. This is due to dust and dirt or the rivets in the coil core loosening over time. Incipient wear on the short-circuit ring can also be a reason. The task of the excitation coil is to generate a strong magnetic field when current flows. The coil core serves as a carrier for the coil and strengthens its magnetic field. This is the only way to overcome the force of the return spring. The magnetic effect becomes large enough to move the armature. As soon as the armature is attracted, the switch contacts touch and the contactor is active (ON). The return spring returns the armature to its original position when the coil's magnetic field disappears. The contacts loosen and the device goes back to sleep mode. This means that the device only stops by itself in the OFF position. The control circuit of the coil and the load circuit of the switch contacts are isolated from each other. The armature creates the connection between the circuits and enables the consumers to be switched on the load circuit. A contactor is therefore an electromechanical switch designed for high power, which is similar to a relay in terms of its function.Can several contactors be combined?You can combine multiple contactors to meet specific installation and automation needs. You have even more diverse control options if you use contactor relays to control the installation contactor or to display an operating status. Contactors of various combinations with a maximum of four contacts are often used (e.g. two NO contacts / two NC contacts or three NO contacts / one NC contact).Contacts in an installation contactorAn installation contactor is usually provided with different types of contacts. A distinction is made between main contacts and auxiliary contacts.Good to knowThe contacts of a contactor are divided into working contact (closer), break contact (opener) and changeover contact (changeover contact). The changeover contact is a combination of opener and closer. Opener and closer can also be combined in one installation contactor.The main contacts described in the function are used for the power to be switched. This makes it possible to connect large consumers. The auxiliary contacts are designed as signaling lines for contactor control and signal display.What is an auxiliary contactor?You have a wide range of control options when using contactor relays. Power contactors have a significantly higher switching capacity than contactor relays and switch load circuits of large consumers. Auxiliary contactors switch control voltages for small loads and are designed for small consumers and displays. You can use it to implement logical operations and control power contactors.Image: Schneider Electric A9C20844 installation contactorWhat is the difference between a contactor and a relay?Relays serve primarily as circuit breakers and control switches in devices and are important components in many control processes. There are different types of relays that perform different functions. The most common types include protection relays, monitoring relays, auxiliary relays and reclosing relays. Relays open and close circuits or contacts by responding to electrical quantities such as current or voltage. A contactor is an electromechanically controlled circuit switch. Here a circuit with a low power level is switching a circuit with a higher power level. A contactor is designed for operation with normally open contacts. If there is no power on the device, there is no switching connection. Relays can usually open and close. Another difference lies in the performance of the respective device. Contactors are used in control circuits with higher electrical voltages and higher currents. This results in further safety-relevant differences. Contactors work with tie rods and return springs, relays with hinged armatures or rotary armatures. Sparking caused by the separation of live contacts is reduced in the contactor with arc suppression. As a rule, relays switch much faster than contactors, are lighter, smaller and consume less energy. Due to the more complex structure, contactors are more expensive than relays.  Catalogue content:In this eibabo® catalogue Devices for distribution board- / surface mounting > Installation contactor for distribution board you will find items from the following product groups:Item overview:AC contactorBuilt-in contactorBuilt-in distributor deviceChangeover contactorContactor moduleControl contactorDC contactorHeater contactorHigh power contactorInstallation contactorInstallation contactorsInstallation relayLighting contactorLoad contactorMagnetic switchModular installation devicePower contactorSeries built-in contactorSmall contactorUniversal voltage contactorfrom the following manufacturers:Manufacturer overview catalogue Installation contactor mdrc:ABBDoepkeEatonEberleEltakoFinderHagerLegrand BticinoSchneider ElectricSiemens
Solar thermowell - In this eibabo® catalogue Spare parts for measurement and control instruments > Immersion tube you will find items from the following product groups:Item overview:Collector immersion sleeveDip tubeImmersion tubePressure thermometer immersion tubeProcess connectionProtective sleeveSensor pocketSolar dipping caseSolar immersion sleeveThermometer immersion tubeThermostat process connectionThermowellWeld-in sleevefrom the following manufacturers:Manufacturer overview catalogue Solar thermowell:Alre-itEberle
Humidistat switch cabinet - A hygrostat is a control and measuring instrument that determines the relative humidity and uses these values to switch systems, which then counteract the current situation in order to restore the required actual state. A hygrostat usually consists of a sensor and a switch. There are models with mechanical and electronic sensors. A mechanical sensor is triggered when, for example, real hair or plastic fibers change their length under the influence of humidity. Its electronic counterpart reacts when the electrical resistance in a polymer layer built into the sensor changes due to rising or falling humidity. You can get high-quality electronic and mechanical hygrostats in the eibabo online shop. You can use them, for example, to monitor the currently prevailing humidity in a control cabinet and, in the event of deviations, take countermeasures with the dehumidifiers or fans that are also available here in the shop.Catalogue content:In this eibabo® catalogue Cabinet enclosures > Humidistat switch cabinet you will find items from the following product groups:Item overview:Climate controlControl cabinet hygrostatHumidistatHumidity controllerHygrostatHygrostat (control cabinet)Hygrostat for control cabinetfrom the following manufacturers:Manufacturer overview catalogue Humidistat switch cabinet:EberleFinderHagerHäwaKraemer & KrausRittalSchneider ElectricSiemensStiebel EltronSwegon
Heating switch cabinet - Humidity and electrical systems - these are two things that don't really go together well. Condensation water, condensation water or splashing water should be avoided at all costs on electrical components with bare contacts. With a control cabinet heater, you regulate the temperature and the relative humidity in the distribution box, thereby preventing the temperature from falling below the dew point and thus the formation of condensate. Switch cabinet heaters are available with and without fans in the eibabo technology store. Models with fans also have the advantage of simultaneously moving the air inside the junction box. The removal of moist air is therefore faster. Avoid consequential damage caused by corrosion and can lead to electrical short circuits. So secure your system with a high-quality control cabinet heater if it is located in areas where there are greater temperature differences or high humidity.Catalogue content:In this eibabo® catalogue Cabinet enclosures > Heating (switchgear cabinet) you will find items from the following product groups:Item overview:Accessories for control cabinetAir conditioningCabinet heaterCable distribution cabinetsCable distributorCloset heaterControl cabinet accessoriesControl cabinet air conditioningControl cabinet heaterControl cabinet heatingEnergy distributorExpansion systemHeater for control cabinetHeatingHeating (control cabinet)Heating (enclosure/cabinet)Heating (switchgear cabinet)Heating for control cabinetHigh current systemPipe trace heatingfrom the following manufacturers:Manufacturer overview catalogue Heating switch cabinet:EberleFinderGrotheHagerRittalSchneider ElectricSiemensStriebel & JohnWalther
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