Jun 18, 2018 contactors are almost exclusively designed to operate with normally open form a contacts. Contactors can be field mounted easily and are compact in size. They are environmentally friendly, versatile, and flexible. They are the bigger version of relays both physically and electrically they have bigger, wider and heavier contact mechanisms designed to handle large amount of currents. Contactors and relays contactors dil, overload relays z eaton wiring manual 0611 510 5 5 rated operating current ie a ac3 at 400 v max. The rib relay in a box pilot series includes ribu1c, ribu2c, ribh1c, ribh2c, ribh1s and more has 10a relay contacts and is used to control light electrical loads, dirve power relays or contactors, or sense the voltage being fed to electrical loads. 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.
Unlike relays, contactors are designed with features to control and suppress the arc produced when interrupting heavy motor currents. These contactors have a low power consumption for direct control from plc outputs. The xt iec contactors are powerful, efficient and versatile, and can be combined with our full range of electronic overload relays and bimetal relays. Furthermore, mini contactor range offers compact dimensions and specific connection possibilities. Long life the jm family of contactors and relays offers superior performance. Many devices called relays use similar techniques and topologies. We offer a full line of versatile and robust contactors for both iec and nema applications. Both of them are electrically operated switches used for control and switching of loads. Electrical endurance of main contacts of motor contactors. Contactors, overloads and manual motor starters carlo gavazzi. The more expensive the electrical gear, the greater the number of relays that will generally be used. Industrial controls catalog industrial controls sirius. Iec power control 29 contactors, starters and overload relays. Contactors, and relays for hvac are available at wholesale and quantity pricing.
Magnetic contactors and thermal overload relays sk series. The contacts are opened and closed by exciting this electromagnetic coil. Contactor an operating device which connects or disconnects the motor from the power supply. Thermal overload relays for use with tesys k contactors type of product range pages adjustable thermal overload relays for motors tesys lrk from 0.
Contactors come in many forms with varying capacities and features. Contactors typically have multiple contacts, and those contacts are usually but not always normallyopen, so that power to the load is shut off when the coil is deenergized. Part 4 overload relays part 5 dc general purpose constant voltage controllers part 6 ac combination motor controllers part 7 magnetic lighting contactors part 8 disconnect devices for use in industrial contr ol equipment annex a maintenance of motor controllers after a fault condition. Xt iec contactors are suitable for global use and cover the entire output range, from mini contactor relays up to 7 a all the way to vacuum contactors up to 3180 a.
Also find hard to find transformers, contactors, and relay replacement parts. These contacts are in most cases normally open and provide operating power to the load when the contactor coil is energized. Contactor relays are often used in control and regulating functions. Sometimes called ice cube relays because they are small and square and with clear plastic like an ice cube. The first three steps for selection will be the same. Rather, the term, contactor is used to describe a type of device that is used very much in the same manner as a relay. These are operated to open or close the load contacts in response to one or more electrical quantities like voltage and current.
Furthermore, minicontactor range offers compact dimensions and specific. Our nema contactors are known for rugged construction, dependable performance, and long electrical life. Difference between contactors and relays electrical classroom. Ca03407001e xt iec power control contactors, starters and overload relays product family overview 1 1 4 2 3 4 4 4 4 4 1 1 3 3 3 2 4 4 4 table 46. The relay is an automatic protective and switching device which is capable of sensing abnormal conditions in electrical circuits. Abb offers a comprehensive selection of contactors for simple and extreme application as well as products with specific purposes. Similarly, little is specifically mentioned regarding application of telecommunications type relays. Nf contactor relays contactor relays for auxiliary circuit. Nf contactor relays are featuring af technology as standard. The term is used when the power poles are operated by an electromagnetic circuit, through the use of a coil and magnetic armature frame. In particular, large electrical gear as generators, motors and.
A contactor has a frame, plunger, and a solenoid coil. Contactors are used by electrical equipment that is frequently turned off and on opening and closing the circuit, such as lights, heaters, and motors. Control and chapterb11 tesys p c rotection omponents from 0. In general contactors are intended to control higher levels of current. These relays are usually rated up to 10 or 15 amps. Industrial controls catalog high contact reliability, a narrow design, long life time, and the ability to operate under extreme conditions up to 60 c, ensure that sirius 3rt contactors are suited for. A contactor is an electrical device which is used for switching an electrical circuit on or off. Threepole contactors to 2000a fourpole contactors to 200a capacitor contactors to 680 kvar mini contactors to 9a relays to 16a thermal overload relays to 630a. Electrical endurance of contactor relays and auxiliary contacts of motor contactors. Contactors and contactor relays to keep things running you need control abb offers a comprehensive selection of contactors for simple and extreme application as well as products with specific purposes.
Download it today to see just how quickly you can select products and retrieve information. Iec control relays elecdirect industrial motor control relays conform to standards iec9471, 9475 and are ul, csa approved. They are used in large quantities for the indirect control of motors, valves, clutches and heating equipment. Since most are intended for large power applications, they come normally available in three to. The safety cover of magnetic contactor and thermal overload relay is optional. Relays and contactors use a variety of technologies to switch signals and power connections. Operated application alrt, talrt contactors are mainly used for controlling 3phase motors and more generally for controlling power circuits up to 690 v a. Possible to print the page to a pdf file or from your printer. Relays are typically integrated into a logic circuit together with other relays and.
Generally, these electrical devices feature multiple contacts. Main catalogue contactors and contactor relays with ring. The sk series was created to fill the need for magnetic contactors with optimized performance and specifications required for this kind of application. Contactors are used in applications ranging from the light switch to the most complex, automated industrial equipment. Contactors typically have multiple contacts, and those contacts are usually but not always normallyopen, so that power to the load is. Industrial control and systems controllers, contactors and. The basic principle of operation of the contactor and the relay are the same. Relays are used in a wide variety of applications like electric power systems, home. The industrial controls catalog as a single interactive pdf file. In addition to the simplicity which they offer in project engineering, panel building, commissioning and maintenance, the high. An electromagnetic coil is provided for opening and closing of contacts. Compact size the contactor relay mounting profile is approximately 1 34.
Fused control circuit transformer and control relay. Apart from optional auxiliary lowcurrent contacts, contactors are almost exclusively fitted with normally open form a contacts. Contactor relays contactor relays contactor relays are often used in control and regulating functions. Control circuit the circuit that controls a relay or contactor. This is an extremely interactive catalog with page links, bookmarks, and a search engine. Contactors can be combined with either manual motor starters of the sm series, providing thermal and magnetic protection up to 100a, or single or threepole thermal bimetallic overload relays. Contactors are most commonly used for controlling electric motors. The electronically controlled coil offers multiple benefits over conventional alternatives, and together with abbs wide product offering, an optimal configuration, every time. Contactors are electromechanical devices used for switching applications. Dec 11, 2017 much like a relay, a contactor is an electrically controlled switch. Shop our parts hvac online store for transformers, contactors, and relays hvac supplies and accessories. Our line includes products from agastat, axicom, cii, hartman, kilovac, oeg, potter and brumfield, products unlimited, and schrack, as well as te. Relays on the other hand can and often are both normally open and or normally closed depending on the desired function.
The af contactor technology revolutionizes how we use contactors and allows use in all parts of the world and in all network conditions. They are used in large quantities for the indirect. Whatever the application, the function of the contactor is always the same. Thermal overload relay 1718 dimensional drawings 1921 9 10. Both have an external envelope to protect all the internal parts from the external environment. Motor starters, contactors, and relays all operate on the same basic principle. Xt iec contactors resources contactors and starters eaton. They both are commonly used in industrial and commercial applications, and function in almost the exact same way. Contactors electromechanical relays electronics textbook. Contactors, relays, starters contactors d54 d 32 12 21 7. Contactors contactors are relays that switch high current loads a. Secure uptime and optimize stocks with af latest technology.
When a relay is used to switch a large amount of electrical power. Iec contactors relays a2 springer controls company 96074 chester road, yulee, fl 32097 904 2250575 fax. 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. When a relay is used to switch a large amount of electrical power through its contacts, it is designated by a special name. We offer the broadest range of relays and contactors in the world.
This means that with a contactor, when it is deenergized there is typically no connection. Perhaps the most common industrial use for contactors is the control of electric motors. Generally, the need for proper coil drive applies equally to contactors and telecommunications relays except that increased internal and coil temperature rise due to contact load is seldom an issue in telecommunications applications. The as contactor is efficient and allows you to optimize your equipment design. Guarantee conditions are described in detail in the noark electric complaint procedure.
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