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Relay sockets - Did you know that relays made both the development of the first computers and telegraphy possible in the first place? As early as the middle of the 18th century, people were thinking about the idea of the telegraph. But it was only through the invention and further development of the relay that this idea could become a reality. Incidentally, the term relay is derived from the relay stations of the post office. This is where the post riders exchanged their horses. A total of 2,000 relays were installed in the first Z3 computer (1941) by Konrad Zuse. Today, relays are indispensable in many places. At eibabo you can get various relay sockets of the best quality for your project. We carry models with dismantling and holding levers, EMC suppression circuitry in the coil, integrated LED display, screw connection and snap-on fastening.Catalogue content:In this eibabo® catalogue Relays > Relay socket you will find items from the following product groups:Item overview:BaseChangeover relayCircuit board socketDIN rail footEmpty CaseJack for time moduleLamp holderLoad relayMiniature switching relayMounting basePlug-in relayPower relayPower supplyPrint versionRelay AccessoriesRelay socketRelay terminalScrew socketScrew terminal socketScrew terminalsSocketSocket relaySocket socketTerminal blockTime blockTube socketUniversal relayVersionfrom the following manufacturers:Manufacturer overview catalogue Relay sockets:ABBComatETAFinderKüblbeckLützeMetzOmronPhoenixPilzRockwellSchneider ElectricSiemensTeleWAGOWeidmüller
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
Timer - A conventional time switch usually switches an electrical relay contact at set times. This is used to realize specific control and automation functions. However, in this eibabo catalog you will find special timers for various automation bus systems, such as radio bus or KNX bus system. KNX time switches, generally, do not dispose of direct switching contacts, but provide the status in digital form as telegrams on the respective bus system or by radio. Depending on the manufacturer, the KNX time switches have diversified but also different characteristics. Most KNX switches feature a day program, week program and year program. Some KNX timers offer a connection option for a DCF or GPS antenna. An automatic summer / winter changeover as well as astro programs. A definition of the geographical location of the building extends the range of options. Switching functions with output of dimming values, switching ON / OFF or UP / DOWN for blinds or shutters, heating control for comfort / standby or night mode, scene release as well as master / slave function are other possible options of KNX time switches. Updating the date and time at KNX displays or other KNX devices in the system by sending the information to the bus are further advantages. Some manufacturers also offer holiday databases, countdown timers and operating hour counters, as well as random programs for simple presence simulations in case of absence to deter potential burglars. A standby in case of power failure is also often standard. What is different is the way to get started. Some manufacturers offer the possibility of direct commissioning of times at the display, programming keys or a separate add-on software or programming solely via the ETS. One should also consider whether another KNX device, which already contains timer programs, is planned in the system, for example KNX weather stations with astro function and GPS / DCF, KNX visualizations (KNX server) KNX displays or complex KNX control and display panels. eibabo provides KNX time switches, KNX time transmitters, wireless timers, KNX year timers, KNX radio switches, KNX week timers, KNX radio blind switches, KNX synchronization timers, digital time switches as well as KNX UP timers of all leading manufacturers, such as ABB, Berker, Busch-Jaeger, Eltako, Hager, Issendorf, Jung,Legrand, MDT, Merten, Peha, Siemens, Theben or Warema.Catalogue content:In this eibabo® catalogue Installation bus systems > Time switch for bus system you will find items from the following product groups:Item overview:Application moduleAstro timerBus systemBus system timerColor displayDistribution timerEIBEnergy efficientLight controlLighting controlMounting rail timerNikobusProgram clockProject clockRadio timerTime switchTime switch for bus systemTimerTimer clockTimer moduleTimersWeek clockWeekly timerYear time switchYear timerfrom the following manufacturers:Manufacturer overview catalogue Timer:ABBBerkerBusch JaegerEltakoHagerMDTMertenSomfyTheben
Switch actuator - Do switch actuators only differ in the number of channels? If you would like to know what you should consider before buying a switch actuator, we have put together some helpful information for you in the following article. The possibilities are therefore very extensive and actuators from the eibabo® range take on very central control and switching functions. But what exactly does that mean? We clarify.Briefly summarizedSwitch actuators are components of modern building automation.You can plan these in the new building, retrofit them in the old building and use them flexibly if you are renting.It is possible to digitally network and switch almost all devices and components of building technology.Switch actuators are parameterized with the standardized ETS software.Private areas of application are, for example, switching operations on lamps, sockets, household appliances, entertainment devices and kitchen appliances.In the commercial sector, for example, you switch access systems, escalators, revolving doors and so on.   How does a KNX switch actuator work?Every bus system consists of actuators and sensors. KNX actuators are active switching elements or drive elements and are comparable to a conventional relay in which the coil is intelligently controlled by bus signals. This converts analogue or digital input signals into switching commands or drive commands. The KNX switching actuator also has its own intelligence in the form of a controller, the so-called 'KNX bus coupler'. You can recognize this controller by the red/black clamp.What types of installation are available for KNX switching actuators?KNX actuators are often also referred to as actuators or binary outputs. A distinction is made between classic switching actuators, dimming actuators, blind actuators, roller shutter actuators, heating actuators, analogue actuators and many others. There are actuators for installation in the electrical distribution, then you have the suffix 'REG' for modular installation device. Flush mount versions are labeled 'UP' for mounting in a mounting box or junction box. As a built-in version for integration in ducts or similar, 'EB' is specified as the mounting type. However, additional protection must also be taken into account for built-in versions depending on the installation.The advantages of switching actuatorsEverything under control ? anytime and anywhere. Single-family houses or apartment buildings, an office building or other real estate can have complex structures. With switching actuators, you simplify the organization of recurring processes and at the same time ensure that nothing is forgotten, no errors occur and, ideally, time and energy are saved. For example, you can adapt your building's access system to office hours or make the heating output dependent on the prevailing outside temperature. Or use the option of being able to operate doors, gates or windows at the same time. This ensures safety, especially in commercial properties, and saves the facility manager a great deal of time. All switching actuators work efficiently and silently. You are free to choose the type of control. This can be done via buttons, remote controls, voice controls, via the Internet or using a smartphone app.Classic application examples in everyday lifeAllow tradesmen access to the building even when you are not on site. Automatically open all escape routes in case of danger or control your children's TV times. In conjunction with motion sensors or presence detectors, doors can be opened and closed or security lighting activated. As you can see, with a little creativity, the possible uses of a KNX switching actuator are almost endless.Image: KNX switch actuator ? Eibmarkt SA.12.16In order to be able to use this potential optimally, it is necessary to know the extensive technical requirements. Which switching actuator do I need for my project and how do I avoid purchasing an unsuitable switching actuator? At eibabo® you will find actuators from brands such as ABB, Berker, Busch-Jaeger, Eaton, EIBMARKT, Eltako, Gira, Hager, Jung, Lingg & Janke, MDT, Merten, Siemens and Theben. Depending on their specifications, they are used for various automation systems. More detailed information can be obtained directly from the product. All KNX actuators offered by eibabo® are of the highest quality and can be purchased by both private and corporate customers. Delivery is worldwide.What questions should I ask myself before starting the project?Do I install one device or several?Will more devices be added later?What electrical loads and types of loads can be expected, especially when switching on?How should the control be operated - via app, voice and / or button?Are the devices switched individually or in groups?Which logic should the switching actions follow?and much more... ...accordingly, I have to consider the following thingsthe suitability of the planned or already installed cables and linescircuit protectionthe space required in the electrical distribution systemthe type, number and distribution of control elements ? for example buttonsand much more... Which KNX switching actuator do I need for my project?KNX actuators can be single-channel or multi-channel. For this reason, actuators can switch at least one or more different equipment such as lights, sockets or motors. There are also decisive differences between the manufacturers with regard to the software / application and the technical application. These include, for example, the integrated logics (e.g. staircase lighting function, delay functions, logic functions), the load capacity of the switching channels (6A, 10A, 16A) and the load type (resistive load, inductive load or capacitive load).Each switching actuator is optimized for its respective area of application. The tasks of a heating actuator, for example, are linked to different parameters than those of a universal switching actuator. Everyone has their specific application / software. This eibabo® catalog is about the classic switch actuator. For additional information on heating actuators, shutter actuators or dimming actuators, please use the search function in our shop. NOTE:The application (software) of each actuator determines its special properties. There are also differences in terms of functionality and expandability. Some models are designed as switch actuator main modules. These can later be supplemented with switching actuator extensions via jumper plugs and thus flexibly adapted to loads to be switched in the future.recommendationDownload the descriptions and the application for the desired actuators from the manufacturer's website and compare the specifications.Good planning is therefore a prerequisite. Only when you know what you want to switch with the required actuator can you choose a device that best meets your needs.Is the resilience of an actuator important?When selecting the right actuators, you should pay attention to the required loads on the one hand and the desired functional options that an actuator can offer on a manufacturer-specific basis on the other. Under no circumstances should you, for example, use an actuator with a maximum load capacity of 6A resistive load and 3A for capacitive loads for switching fluorescent lamps with electronic ballasts, since these devices have very high inrush currents (up to 100 A for 3-5ms) for a short time. This can lead to the contacts sticking together. For such loads, it is advisable to use C-load actuators.Does it make sense to use a very heavy duty actuator for very light loads?Please try to select the performance of your actuator as precisely as possible based on your needs. Very low loads on very heavy-duty C-load contacts can lead to wear because the self-cleaning effect no longer occurs. Actuators with a high load capacity of the channels also often require more robust relays with audible switching actions. This should be taken into account in particular when electrical distribution boards are installed in the vicinity of living spaces. TIP:Always choose a switching actuator with regard to its performance to match the respective installation. This protects the technology and extends the service life. In the smart home area, multi-channel 10-16 ampere actuators for resistive loads are used most frequently.Can I connect different phases to the KNX switching actuator?Yes, you can connect different phases to the switching actuator, provided each channel is available separately on the device. In the case of devices with separate potential-free switching contacts, the different phases can be switched next to one another. Different residual current circuit breakers per channel are also possible. In contrast to this, however, operation with different voltages within an actuator is by no means permissible.How do I define the individual switching parameters on the switching actuator?At this point, many interested parties become pensive and begin to doubt whether they can 'program' a switching actuator themselves. It's actually not that difficult. The Engineering Tool Software (ETS) required for this is not really used for programming, but only the group addresses and parameters are assigned to the device.What does ETS mean for KNX?The engineering tool software is a necessary tool for configuring the functions when commissioning KNX devices. The software is only used for parameterization and can also be understood by laypersons with an interest in the logic of the KNX.Programming knowledge is not required and you do not need to know any programming language. If you are interested in the rather simple logical connections of the KNX bus, you are quite capable of creating a project. Of course, more complex concepts require a certain amount of experience. We always recommend having the basic project created by an experienced system integrator. This gives you the option of later changing important parameters yourself very easily if this becomes necessary due to changes in everyday life.What is the difference between binary input and binary output?Switch actuators are also referred to as binary outputs. This designation is not wrong, because these are components that actually switch the connected electrical equipment like a classic light switch - often centrally in the control cabinet. Binary inputs, on the other hand, do not switch the current, but only pass on the signals from conventional operating devices to the KNX system for further processing in a logic module or other KNX participants.  Catalogue content:In this eibabo® catalogue Installation bus systems > Switch actuator for bus system you will find items from the following product groups:Item overview:Adapter plugBasic moduleBlind controlCommand devicesDrive controlElectric infrared heatingEnergy measurementGarage doorHand controlLatching switchOutdoor areaRadio controlRadio systemRelay switchResponse delayShutter outputShutter switchSocket coverSplash proofStaircaseSun protectionSwitch socketSwitching actuator moduleSwitching deviceVentilation controlWipe-offWipe-onWireless switching outputfrom the following manufacturers:Manufacturer overview catalogue Switch actuator:ABBBerkerBusch JaegerEatonEberleEIBMARKTElsnerElsoEltakoESYLUXFinderfrogblue AGGiraHagerIssendorffJungLegrand SEKOLingg & JankeMDTMean WellMertenPehaRutenbeckSchneider ElectricSiemensThebenVaillantWaremaWielandZumtobel
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
Temperature monitoring relays - With a temperature monitoring relay you can measure the temperatures of solids, liquids and gases. The measurement is carried out using different types of sensors. But what does it exactly mean? Depending on your individual application, such a relay is used to monitor over- or under-temperature. The individual values for triggering a switching process can be configured individually for each device. You can also decide for yourself whether the relay reacts according to the open or closed current principle. If a switching process takes place and the relay thus changes its position, the current status is displayed on the device according to the configured parameters. Other names for this type of relay are, for example, motor protection relays, safety temperature limiters or thermistor relays. In the eibabo online shop you will find a large and inexpensive selection.Catalogue content:In this eibabo® catalogue Low-voltage industrial components > Relay for thermistor protection (PTC) you will find items from the following product groups:Item overview:Engine protectionFull protection relayMachine protection deviceMotor current relayMotor thermistorOverload relayProtection relayRelay for thermistor protection (PTC)Temperature monitorTemperature monitor (motor protection)Temperature monitoringTemperature monitoring deviceTemperature monitoring relayTemperature monitoring relay (motor protection)Temperature relayTemperature switchThermal protection relayThermistorThermistor machine protection deviceThermistor motor protection relayThermistor protectionThermistor protection relayThermistor relayfrom the following manufacturers:Manufacturer overview catalogue Temperature monitoring relays:ABBDoldEatonMetzPilzSchneider ElectricSiemensTele
Residual current circuit breaker - Why should you never do without a residual current circuit breaker in your installations? And how do you find the right device with the best price-performance ratio? Interesting information about the function and use can be found on this page. Notice:Working with electricity is always dangerous. Always have electrical installations carried out by a specialist electrical company. If you're unsure as a layperson, be sure to invest in professional support. This way you get a working installation and can rely on the installer's warranty if necessary.What is a residual current circuit breaker?Residual current circuit breakers, also known as residual current circuit breakers, bear the official designation RCCB. This is an abbreviation for 'residual current operated circuit breaker' and the devices belong to the superordinate group of 'residual current devices' (RCD), i.e. residual current protective devices. Residual current circuit breakers prevent dangerously high residual currents against earth and thus help to prevent life-threatening electrical accidents in low-voltage networks. These are connected upstream of the overcurrent protection devices in circuit distributors.At eibabo® you will find not only a large selection of residual current circuit breakers, but also other protective devices such as residual current protective adapters, residual current protective plugs, automatic circuit breakers and automatic personal protection.Is an RCD and an RCCB the same thing?In colloquial German, the term 'FI switch' is still very common. The 'F' stands for error and the 'I' for the symbol for the current strength. Ultimately, it's just another name for the same device.Picture: Eaton PXF-25/2/003-A residual current circuit breakerHow does a residual current circuit breaker work?The device builds up a magnetic field around the incoming currents. This is neutralized by the currents flowing back. In error-free normal operation, this creates a balance between the energies within the system, which ensures that a relay can let the current flow unhindered. If a fault current occurs, it will create an imbalance, causing the voltage to drop across the relay and its auxiliary contacts to break the circuit. As a result, the switch shuts down the system within tenths of a second without auxiliary power.Is the use of a residual current circuit breaker mandatory?It all depends on which country you are in. There are national regulations for this. In Great Britain, the simpler and smaller electronic residual current circuit breakers are currently still common. In principle, however, the use of these devices is mandatory in many countries for new installations, modernizations or far-reaching changes for private households, commercial units and industrial plants in addition to the installed overcurrent protection devices.In Germany, this applies, for example, to socket circuits up to 32 A and lighting circuits in apartments as well as for commercial buildings, schools and training centers, baths and swimming pools as well as fire-prone business premises and systems. Notice:Old systems that corresponded to the applicable standards at the time of their construction usually have grandfathering. You may continue to operate, maintain and repair them, but not fundamentally expand or change them.i have backups Can I then do without the residual current circuit breaker?Irrespective of the fact that residual current circuit breakers are necessary for the technical acceptance of the system, they fulfill a different task compared to normal fuses and cannot be omitted. Normal home fuses are also known as circuit breakers. Their function can already be derived from this. They protect power lines from short circuits. They interrupt the circuit even at higher currents and imminent overload. This prevents cable fires, for example.Residual current circuit breakers, on the other hand, have the primary task of protecting people and switching them off as quickly as possible, for example if people touch the damaged part of a live line. Because that can be life-threatening. The switch is also used for fire protection. Small fault currents that do not trigger a normal house fuse are prevented.Which type of residual current circuit breaker is the right one for end users?There are very different models on the market, each with individual characteristics. A basic distinction is made between types A, A-EV, AC, B, B+, F and S. Type A is the most common variant for use in classic households, in commerce, in public facilities, functional buildings and industrial plants. This is a pulsating current-sensitive switch that detects alternating currents and pulsating DC residual currents. The value at which the switch should trip is 30 mA (milliamps) in normal use. It is therefore necessary to install a switch with a rated fault current of 30 mA.Rated current and rated residual current ? what is the difference?Both key figures are crucial for choosing the right circuit breaker. The rated current is the maximum voltage that can be conducted via the residual current circuit breaker per phase conductor. The rated residual current describes the maximum measured difference between incoming and outgoing currents before a residual current circuit breaker has to trip at the latest.AssemblyA residual current circuit breaker is typically installed in the meter cabinet / electrical distribution box. The position is directly behind the electricity meter and in front of the classic circuit breakers.The switch thus covers all circuits in a system, regardless of whether they are inside a building or outside. However, it is advisable to use several separate residual current circuit breakers and fuses depending on use. In many countries and regions it is even mandatory to equip special areas with their own residual current circuit breaker.Interesting - short and sweetAre additional protective measures possible?If you want to further increase the scope of protection of your electrical installation, you can equip personal protection sockets or socket strips with a residual current circuit breaker with a rated residual current of 10mA to 30mA. What additional protection do residual current circuit breakers offer?The special properties of residual current circuit breakers include personal protection against life-threatening currents and protection against fires that can be caused by earth fault currents, for example. How do residual current circuit breakers work?Due to the low tripping currents of 10mA to 500mA, the use of residual current circuit breakers means that the currents at the fault location are not as high. Are there performance differences in residual current circuit breakers?You can get the devices here in the shop in different versions: 16 A, 25 A, 40 A, 63 A and 100 A (ampere). The ampere rating of the device indicates the nominal current for which the residual current circuit breaker is designed and, along with the selection of the triggering rated residual current, represents one of the most important parameters in the purchase decision. Who Makes Reliable RCDs?We only carry high-quality devices from well-known manufacturers such as Siemens, ABB Stotz S&J, Doepke, Schneider Electric and Eaton (Moeller), Jung, Hager and ABL Sursum. Good to knowWhen choosing a residual current circuit breaker, please take its dimensioning into account. The circuit breaker must never be designed smaller than the upstream fuse, otherwise it will be overloaded.By the way: The forerunner of modern residual current circuit breakers is a German development from 1903. The principle of residual current protection goes back to a development by Sigmund Schuckert from Nuremberg, who had a corresponding device patented under the name summation current circuit for earth fault detection. The technology was then continuously further developed and in 1957 the Austrian Gottfried Biegelmeier presented the residual current circuit breaker in its current form.What effect does charging an electric car have on the residual current circuit breaker?Usually the purchase of an electric car has no effect on the circuit breaker. Nevertheless, care must be taken to ensure that protection against DC residual current is guaranteed during multi-phase charging. A type A circuit breaker does not offer such protection, but don't worry: plug-in hybrid vehicles typically charge in a single phase and are therefore technically hardly different from other household appliances. Pure electric cars that are capable of multi-phase charging cannot be connected directly to the house voltage. This requires either a wall box or at least a mobile charging cable with charging control, which then connects to a conventional 16A or 32A CEE socket. In both cases, the control unit of the charging technology should have a corresponding integrated DC fault current detection (DC fault protection). With professional installation of the wall box or the CEE socket, a simple type A residual current circuit breaker is sufficient in addition to the corresponding miniature circuit breaker.  Catalogue content:In this eibabo® catalogue Circuit breakers and fuses > Residual current circuit breaker (RCCB) you will find items from the following product groups:Item overview:Adapter plugCircuit breakerDifferential currentEarth leakage circuit breakerElectric charging stationHeat pump systemsIntermediate switchMain residual current circuit breakerPersonal protection machineRail mounted devicesRCCBResidual Current DeviceARCCBResidual Current DeviceBRCCBResidual Current DeviceFRCD switchResidual currentResidual current adapterSafety switchfrom the following manufacturers:Manufacturer overview catalogue Residual current circuit breaker:ABBBachmannBerkerDoepkeEatonGiraHagerJungSchneider ElectricSiemens
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