Our experience shows that filing and grinding increases the risk of causing other problems. Many devices called relays use similar techniques and topologies. All aline contactors can be assembled side by side. Complete choice of contactor relays same advantages and accessories as af contactors only four coils for easier selection additional ldc4 coil terminal. Here you will find our selection of top quality contactors and relays. Contactors and overload relays new generation of contactors from ls industrial systems. The common line was launched to market abb introduced the a contactor abbs contactors provide unmatched performance and very soon it became the. A contactor is an electrical device which is used for switching an electrical circuit on or off. I dimensions in mm fix on a plain surface with two m5 screws, max. The basics of contactors commercial electric products.
Below is a single pole contactor with a 24 volt coil. However, the basic difference between the relay and contactor is that the contactor is used in applications with higher current carrying capacity, whereas the relay is used for lower current applications. Gigavac contactors, high voltage relays, switches, power. Compact size and surface or din rail mounting make installation easy.
Contactors usually need to be changed every 5 years under normal operation. Also find hard to find transformers, contactors, and relay replacement parts. For nuclear power plant contactors and overload relays. Designed on a global platform, the new relay covers the entire power control spectrum including nema, iec and dp contactors to deliver enhanced motor protection. Abb offers the most extensive range of electronic timers, measuring and monitoring relays, interface relays and power supplies in the industry allowing you to source your critical components from one global supplier. This paper describes a new power supply system that enables an ac contactor to ride through power grid disturbances. Gigavac is a leading designer, manufacturer, and worldwide seller of contactors, manual battery disconnect switches, and high voltage relays using vacuum, gas filled, and high voltage reed relay technology. Directly mountable overload relays provided separately easy to combine with manual motor starters by using. Catalog landing page that will be active during highlighting of epr catalog release. An electromagnetic coil is provided for opening and closing of contacts. The as contactor is efficient and allows you to optimize your equipment design. Contactor relays contactor relays contactor relays are often used in control and regulating functions. For nuclear power plant contactors and overload relays lsis meta solution contactors metasol contactors. Contactor relays sirius 3rh2 contactor relays, 4 and 8pole 56 siemens ic 10 2012 5 technical specifications 1 i e 6 a for ac15ac14.
Both have an external envelope to protect all the internal parts from the external environment. When a relay is used to switch a large amount of electrical power through its contacts, it is designated by a special name. Telemecanique integral selfprotected starters combine. Relays are classified into several types based on their functionality and application they are implemented for. First, remember that contactors are switching devices, so you will need to familiarize yourself with some of the selection factors for electrical switches. Catalogue motor protection and control manual motor. Relays and contactors use a variety of technologies to switch signals and power connections. Timer and contactor wiring diagram pdf wiring diagram. Eaton starters and contactors overview automationdirect. Electrically, we have transistors and integrated circuits. Shop our parts hvac online store for transformers, contactors, and relays hvac supplies and accessories.
However, like any other device, they are not infallible. For example the risk of increasing the contacts resistance is high due to scrap from this grinding and filing. The diagram symbols in table 1 are used by square d and where applicable conform to nema national electrical manufacturers a ssociation. Relays without contacts are not included in this technical guide. Contactors electromechanical relays electronics textbook. Controls contactors and contactor assemblies contactor. In addition to the simplicity which they offer in project engineering, panel building, commissioning and maintenance, the high. The eg contactor the swedish based in france through a merger between swiss brown boveri company, swedish asea and the finnish company strombergs.
Ge controls and power electronics for industrial applications. With two magnetic pulses pulling on the armature there is always a magnetic attraction holding the armature to the pole face. Abb a16 series electricallyheld 4 pole lighting contactors. The telemecanique family of iec style contactors and starters include the following. A device by which contacts in one circuit are operated by a change in conditions in the same circuit or in one or more associated circuits. To turn things on and off, we need devices that are switchable by the application of a current or voltage. Bulletin 502l combination lighting contactors with disconnect switch combine switching and overcurrent protection in the same enclosure.
Electrical controls for heating and air conditioning, contactors, relays, transformers, sequencers, time delays. Magnetic contactors and thermal overload relays sk series. The induced current flowing in the shading coil sets up a magnetic flux that is out of phase with the flux from the current in the main coil. See class 9999 for the holding circuit contact electrical ratings. Solidstate relays and contactors 8 industrial controls product catalog 2017 section contents introduction 82 solidstate switching devices general data 83 solidstate switching devices for resistive loads solidstate relays 3rf21 solidstate relays, singlephase, 22. C440xt electronic motor protection relays eaton s new c440xt electronic motor protection relay is the most compact, highfeatured, economical product in its class. Tesys d contactors are available in contactor ratings for inductive motor applications up to 150 fullload amps and resistive loads up to 200 amps. Relays with contacts relays without contacts hybrid relays note.
This video explains the principle of operation of contactors. The safety cover of magnetic contactor and thermal overload relay is optional. Schneider electric on contactors and relays link to manufacturers web site link to the schneider electric ecatalogue for further product information and datasheets. Contactors and relays perform the same task of switching a circuit. Oct 11, 2016 a contactor is an electrically controlled switch used for switching an electrical power circuit, similar to a relay except with higher current ratings.
Description of 3 pole and 4 pole contactors a9 a300. Contactor size mm type sk06 sk09 sk12 sk18 sk22 sk32 thermal overload relay size mm type tk12 tk25 tk26 magnetic contactor and thermal overload relay sk series supporting the market for motor drive circuits such as inverters and servos with the recent increased popularity of inverters and servo amplifiers, more companies are using. They combine motor control and protection in a single device. Difference between contactor and relay difference between. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24volt coil electromagnet controlling a 230volt motor switch.
In particular, large electrical gear as generators, motors and. External contaminants on the surface of the contactor magnets can cause the contactor to buzz or hum at increased levels. Heating and cooling equipment require switching devices that are heavy duty and can operate for thousands of cycles. Hv relay and contactor information with cross reference charts for kilovac te connectivity, jennings, kissling, and cyneryg3 part numbers. Sometimes called ice cube relays because they are small and square and with clear plastic like an ice cube. 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. Therefore, this document is intended to describe about a few basic types of relays that are popularly used in typical loadcontrol. The basics of contactors contactors are useful in commercial and industrial applications, particularly for controlling large lighting loads and motors. Directly mountable overload relays provided separately. The first three steps for selection will be the same. Contactors, overloads and manual motor starters minicontactors and overloads up to 20 amps or 7.
Type numbering system for nuclear power plant contactors 6a 6a 800a 800a rated current mc6aq. Ac and dc contactor system dilm, contactor relays, 3 pole contactors up to. Hybrid relays are a combination of the best of both relays with contacts and relays without contacts. Select the relay design and choose a semiconductor relay with higher rated current than the load requires determine the thermal resistance of the proposed heat sink c heck the correct relay size with the aid of the diagram solidstate contactors dlfor switching motors the solidstate contactors for switching motors are intended for. After completing this course, participants should be able to describe the operating principles of magnetic contactors and relays, and explain how both types of devices are used in electrical systems.
The more expensive the electrical gear, the greater the number of relays that will generally be used. The dila and dilm7 to dilm38 contactors of the dilaxhir22 auxiliary contact are available specially for switching the smallest signals for electronic. Kline mini contactors, overload relays and accessories. The a16 series lighting contactors are electricallyheld fourpole contactors available with normally closed or normally open contacts. They both are commonly used in industrial and commercial applications, and function in almost the. Semiconductor elements transmit and cut the signal or power and contacts are used to supply the power for the relay. What is the difference between a contactor and a relay. The contacts are rated for 30a general purpose and ballast, or 20a tungsten. Components that meet iec 60947 are more reliable, of higher quality, and are better matched to their intended application. Contactors are almost exclusively designed to operate with normally open form a contacts. Another prestolite incredibly heavyduty 3pst normally open contactor.
Contactor relays type 3rh2 size s00 permissible mounting positions the contactor relays are designed for operation on a vertical mounting surface. Mms are used mainly to switch motors manually onoff and protect them and. Tesys d contactors available up to 150a for ac3 and 200a for ac1 applications. Overload relays directly mountable to contactors separately. Contactors and relays is a course designed to familiarize participants with the operation and use of magnetic contactors and relays. Sizes 37 contactors use a class 9999 sx6 auxiliary contact as the holding circuit contact. Contactors are electrically controlled switching devices used for switching of e. The main difference between contactors and relays is the loads that they are meant to handle.
Relays on the other hand can and often are both normally open andor normally closed depending on the desired function. Make the most of your energy sm tesys iec contactors and overload relays making highfault shortcircuit current ratings simple the latest development in the tesys family of iec contactors and overload relays is component highfault shortcircuit current ratings sccrs. This means that with a contactor, when it is deenergized there is typically no connection. Contactor overview the cutlerhammer ce15 freedom series iec contactors offer big contactor ratings in a compact frame. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Contactors, and relays for hvac are available at wholesale and quantity pricing. Contact ratings have to do with the main circuit being switched by the contactor. The af contactor technology revolutionizes how we use contactors and allows use in all parts of the world and in all network conditions. General technical data, terminal marking terminal markings on main contacts must have a singledigit number. Integral starters can reduce panel space requirements. Contactors typically have multiple contacts, and those contacts are usually but not always normallyopen, so that power to the load is.
Pdf a new power supply system for ac contactor ridethrough. Furthermore, mini contactor range offers compact dimensions and specific connection possibilities. The contacts are opened and closed by exciting this electromagnetic coil. Thermal overload relay with three bimetal elements. Across the line contactors across the line contactors are mainly used for controlling 3phase motors and for controlling power circuits corresponding to their operating characteristics up to 690 and even vac. Motor starters, contactors, and relays all operate on the same basic principle. Additionally, there are three general things to consider for selecting contactors in particular. Catalogue general technical data, standard definitions. These contactors consist of a bulletin 500l 3pole lighting contactor and a disconnect switch fused or nonfused mounted in a common enclosure. Performanceproven in thousands of applications worldwide, vapor relays and contactors meet or exceed stringent qualification requirements of major locomotive and rail passenger car builders and heavy machinery manufacturers. Kline mini contactors and overload relays are for general purpose starting and protection in a small package for motor loads up to 12 amps or resistive loads up to 20 amps. Combination lighting contactors with disconnect switch. They are used in large quantities for the indirect control of motors, valves, clutches and heating equipment.
Compact size the contactor relay mounting profile is approximately 1 34. Contactors and relays contactor relays moeller wiring manual 0208 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 generalpurpose relays, contactors are designed to be directly connected to high. The product offering starts with mini contactors in a compact 12 amp frame size, followed by midi contactors in up to 100 amp frame sizes, and topped off with the power contactors which offer up to 800 amp frame sizes. To complement the contactors, thermal overloads are offered for each frame size, available in several setting ranges. Perhaps the most common industrial use for contactors is the control of electric motors. They both are commonly used in industrial and commercial applications, and. Integral starters are the only selfprotected starters to have ulcsa verification for type 2 coordinated protection. The white and black wires on the right, each send 120 volts to the contactor from the buildings power source. 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.
Easy to combine with manual motor starters by using adapter and wiring kit. Control and chapterb11 tesys p c rotection omponents from. Contactor breakers limit switch no static control standard elementary diagram symbols. We offer the best quality hvac contactors and relays you can find. The 45 mm frame contactors can handle up to 20 hp at. Much like a relay, a contactor is an electrically controlled switch. The proposed system is implemented in an electronic device that is connected to. Relay setting range a fuses to be used with selected relay for use with contactor lc1 reference weight. Sizes 002 contactors use a class 9999 sx11 auxiliary contact as the holding circuit contact. In most cases, the contactor does not simply wear out from normal use. Including nonreversing and reversing contactors and starters as well as overload relays and accessories, contactor overload relay brings lsis to a. Manual guidelines for contactor inspection and maintenance. Long life the jm family of contactors and relays offers superior performance. Electrical contactors and relays hvac parts online.
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