Relay modules switch, isolate, and amplify signals reliably. The junction relay for opening and closing the low voltage and minute current is not needed, so this unit is suitable for opening and closing electronic input circuits in programmable logic controllers, etc. Contactors typically have multiple contacts, and those contacts are usually but not always normallyopen, so that power to the load is. The as contactor is efficient and allows you to optimize your equipment design.
A contactor is an electrical device which is used for switching an electrical circuit on or off. Dcnev250 series high current high voltage dc contactor relay specifications overview amperage. Introduction a contactor is an electrical device which is used for switching an electrical circuit on or off. The robust c100 series contactor relay is available as a 2 or 3 pole relay. Other relay variations include three and five pin relays. These same component design considerations are incorporated. Thermal overload relay with manual or automatic reset from 0,11 to 16 a and 0,06 to 5,5 kw. Ac and dc contactor system dilm, contactor relays, 3 pole contactors up. Furthermore, minicontactor range offers compact dimensions and specific connection possibilities. They consist of two contactors and a single overload relay assembled together. Possibility of direct connection of the br 6 bimetal relay for protection against overload and in case of. However, the basic difference between the relay and contactor is that the contactor is used in. Contactors, overloads and manual motor starters carlo gavazzi.
Power relay to small power contactor replacement thanks to their high switching capacity, the rif4 relay modules can be used in small power contactor applications. While the core of a motor starter is a contactor, its ability to provide overload protection is the trait which makes these items different than a simple contactor. These are operated to open or close the load contacts in response to one or more electrical quantities like voltage and current. Contactors and relays contactor relays moeller wiring manual 0205 53 5 the system and the standard european standard en 50011 terminal markings, reference numbers and reference letters for certain contactor relays has a direct bearing on the use and application of the modular system. Battery contactor aka master relay, master contactor, master solenoid is a continuous duty relay meaning it can be turned on indefinitely. Furthermore, mini contactor range offers compact dimensions and specific connection possibilities. Hyundai innovative magnetic contactor overload relay.
After interruption of the control signal, the contactor or control relay is deenergized at the end of the delay time. The safety cover of magnetic contactor and thermal overload relay is optional. Contactors are typically built for and used in 3phase applications where a relay is more commonly used in single phase applications. When a relay is used to switch a large amount of electrical power through its contacts, it is designated by a special name. C contactor a threephase starter b singlephase starter type 25 nonreversing contactors and starters c306 27 nonreversing starters xtob 30 nonreversing starters c440 eol 65 reversing contactors c 2 5 d n a 2 1 5 a a 1 6 1 8 4 contactor frame size a compact, singlepole b compact, twopole c compact, singlepole w. Thanks to their extensive approvals, they can be used worldwide and are also ideally suited for use in harsh environments with high temperatures. Range mounting suitable for contactors rated insulation voltage rated impulse voltage service temp. Wiring diagram book square d 8501 type nr socketswell guard pump panelsdefinite purpose contactors 8910square d nema relay. In solid state relays, the inductor is replaced by a semiconductor element. By common usage, the term, contactor is applied to a special type of device that is functionally similar to the relay. Abb 3pole contactors offer an exhaustive selection of products for simple and extreme applications as well as products with specific purposes. If you see from the application point of view, you would have seen contactors placed in control panels of industrial motors or other heavy loads. Dile mini contactors for small motors and loads eaton. Catalog extra small for cost effective solutions mini.
Motor protection system one of the most advanced and customizable dynamic thermal models to protect any motor in any application. Possible to print the page to a pdf file or from your printer. The relay is an automatic protective and switching device which is capable of sensing abnormal conditions in electrical circuits. If one set of contacts in the relay becomes immobilized, no other contact of the same relay will be able to move. Relays are used in a wide variety of applications like electric power systems, home. The military specifications and standards are listed in table 1, and other information can be found in milstd46. A relay is used only in control circuit while a contactor can be used in both control and power circuits.
Also find hard to find transformers, contactors, and relay replacement parts. Contactor relays 2 and 3 pole relay cit relay and switch. Mini contactor relay dile,contactor relays, contactors up to 12 a ac3 at 400 v. The forceguided coupling relay module ensures reliable signal exchange with feedback function between two systems.
Contactors and motor starters mitsubishi electric fa. These contactors have a low power consumption for direct control from plc outputs. Large electric motors can be protected from overcurrent damage through the use of overload heaters and overload contacts. We assemble, test and ship our series e620 enclosed dol starters within 3 days, including legend plates. This relay will become warm during normal operations. Contactors and relays perform the same task of switching a circuit. A relay is normally used in appliances below 5kw, while a contactor is preferred when the appliance is heavier. Wire leads for control circuit ingress protections. Motor starters, contactors, and relays all operate on the same basic principle. To assemble fuseless motor feeders you must select combinations of motor protection.
Current splits inside the relay, supplying power to both the control and load circuits. Find all the information for devices on the official hager website. If the seriesconnected heaters get too hot from excessive current, the normallyclosed overload contact will open. Contactor relays k6 ac operated 315 kc6 dc operated 316 interface contactor relays kc6 dc operated 317 contactor relays large coil voltage range tkc6 dc operated 318 with soldering pins 3pole contactors b6, b7 ac operated 319 bc6, bc7 dc operated 320 3pole reversing contactors vb6, vb7 ac operated 321 vbc6, vbc7 dc operated 322. Reversing threephase, full voltage magnetic starters are used primarily for reversing of 3phase squirrel cage motors. Component ratings provide the flexibility to choose the desired level of protection, up to the rated maximum, and use it without the need for specific tested combinations and confusing tested combination spreadsheets. Contactors, and relays for hvac are available at wholesale and quantity pricing. This video explains the principle of operation of contactors. Rather, the term, contactor is used to describe a type of device that is used very much in the same manner as a relay. Main catalogue contactors and contactor relays with ring. Difference between contactor and relay difference between. Shop our parts hvac online store for transformers, contactors, and relays hvac supplies and accessories. Our series e620 comes preassembled with our series 300 contactor, series 320 overload relay, and 22mm iec pilot devices, all within the protection of our durable polycarbonate enclosure. All dil contactor relays have doublebreak contacts.
Control and chapterb11 tesys p c rotection omponents from. Gigavac sealed contactors rohs compliant, gx series. Fundamentals of relay technology application note 1 fundamentals of relay technology electromechanical relays are us ed as interface modules between the process io devices, on the one hand, and the openloopclosedloop control and signaling equipment, on the other, for level and power adjustment purposes. The electronic circuit provides the power to turn the relay on, which in turn switches a larger voltage source needed to turn on a contactor. Relay setting range a fuses to be used with selected relay for use with contactor lc1 reference am a gg a bs88 a classes 10 a 1 for connection by spring terminals only for direct mounting beneath the contactor lrdpp3 0. Contactors are electrically controlled switching devices used for switching of electrical circuits.
A relay, in its most basic form, is a combination of a switch and an inductive element. The following lists the major categories available. Start off reset builtin contacts rated operational current for ac15 utilisation category at 50hz trip class. The af contactor technology revolutionizes how we use contactors and allows use in all parts of the world and in all network conditions. Motor protection relays without phase failure protection. Contactors electromechanical relays electronics textbook. The first three steps for selection will be the same. A contactor joins 2 poles together, without a common circuit between them, while a. At schneider electric, our products and solutions cover the breadth of the industrial, infrastructure and building sectors, including everything from simple machines to complex process systems. In general contactors are little slower than relays. Contactor is so designed that it can be repaired while it. By design and construction they ensure potential isolation between the actuating circuit and the operating circuit, in the deenergized state, between the contact input and output. Our line includes products from agastat, axicom, cii, hartman, kilovac, oeg, potter and brumfield, products unlimited, and schrack, as well as te. As such, we offer a number of contactor relays and protection relays.
Identify maximum amperage and maximum voltage going through contacts. Many large pieces of equipment are powered directly from high voltage lines. What is the difference between a contactor and a relay. Difference between contactor and relay compare the.
Contactor relay coil voltage ranges from 24vac up to 240vac. With a convenient mounting plate, the c100 offers ul class b insulation resistance. Himc 9 himc 50 small frame size contactor accessories 8. Because of this, relays are often used as a middleman between the electronic circuit and the contactor.
The contact between the strip and the contactor causes the contactor to deenergize and restricts the power to the motor, and thus turns it off. Due to their compact, spacesaving size, eatons moeller series dile mini contactors are used wherever small motors or loads need to be switched and controlled. The contactor relay contacts themselves constitute a considerable safety feature. We offer the broadest range of relays and contactors in the world. Designed for continuous duty cycle, the c100 series offers heavy duty contacts to ensure long electrical life. Timer and contactor wiring diagram pdf wiring diagram.
Motorstarters are action devices that start and stop motors and provide overload protection. Monitors voltage, current, power and temperature 22 motor protection functions starter control, metering, and data logging waveform capture for. Operated application alrt, talrt contactors are mainly used for controlling 3phase motors and more generally for controlling power circuits up to 690 v a. Ecostruxure for your business ecostruxure lets you thrive in todays digital world. Choosing between a relay and a contactor isnt really difficult.
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