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. Our line includes products from agastat, axicom, cii, hartman, kilovac, oeg, potter and brumfield, products unlimited, and schrack, as well as te. Motor starters, contactors, and relays all operate on the same basic principle. Download it today to see just how quickly you can select products and retrieve information. Relay operation all relays operate using the same basic principle. As fully authorized, franchised distributor of relays and contactors, we have contracts with some of the worlds finest manufacturers, including cole hersee, general electric, furnassiemens, klocknermoeller, omron, and tycote connectivity. This is an extremely interactive catalog with page links, bookmarks, and a search engine. Specializing in producing mercury relays and other mercury related products. Wiring diagram book a1 15 b1 b2 16 18 b3 a2 b1 b3 15 supply voltage 16 18 l m h 2 levels b2 l1 f u 1 460 v f u 2 l2 l3 gnd h1 h3 h2 h4 f u 3 x1a f u 4 f u 5 x2a r. Xt iec overload relays contactors and starters eaton. Lastly, the mammoth relay on the far right is an automotive power relay, which is rated at 60 amps. Compact modular design offering flexibility and space savings.
Relay options include panasonics exclusive photomos semiconductor relays along with power, signal, solid state, automotive and high frequency options. All books are in clear copy here, and all files are secure so dont worry about it. In particular, large electrical gear as generators, motors and. Choosing between contactors and relays for your application. Panasonic contactors include highly reliable and ecofriendly ac and dc options for a wide variety of applications. These contactors have a low power consumption for direct control from plc outputs. This is an extremely interactive catalog with page links, bookmarks, and a search. Ppt contactors powerpoint presentation free to view id. Contactors and contactor relays with ring tongue terminals. In addition to the simplicity which they offer in project engineering, panel building, commissioning and maintenance, the high. Omron provides generalpurpose relays, io relays, power relays, latching relays, and ratchet relays.
The relays will accept an auxiliary contact for remote signalling applications. Includes power pole, auxiliary, coils and control module kits. Therefore, this document is intended to describe about a few basic types of relays that are popularly used in typical loadcontrol. In any circuit with a din relay, without looking at a wiring diagram, you know that. M mini contactor relays are a high performance but space saving solution used for control functions or for switching small loads up to 6 a. Contactors and relays perform the same task of switching a circuit. Contactors and control relays are available in either ac or dccontrolled forms, and offer application flexibility through a wide variety of modular accessories.
In case of manual modeh push the button to reset the relay. Main catalogue contactors and contactor relays with ring. The basic operation of contactors is similar to that of relays but contactor contacts can carry much more current than relays. They are used in large quantities for the indirect control of motors, valves, clutches and heating. This means that with a contactor, when it is deenergized there is typically no connection.
Download contactors and relays eaton book pdf free download link or read online here in pdf. Military relays and aerospace relays te connectivity. We offer the broadest range of relays and contactors in the world. Furthermore, minicontactor range offers compact dimensions and specific. Relays and contactors from general purpose to board mounted relays, we have a huge instock selection of all types of relays and contactors. Abb offers a comprehensive selection of contactors for simple and extreme application as well as products with specific purposes.
White paper on different types of relays the relay is an automatic protective and switching device which is capable of sensing abnormal conditions in electrical circuits. 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. Ge controls and power electronics for industrial applications. Contactors and override contactors low noise contactors description for the remote switching and control of power circuits 20a63a ac1 technical data the choice of contactor depends upon a number of parameters, e. Jun 18, 2018 contactors are almost exclusively designed to operate with normally open form a contacts. Relays and contactors use a variety of technologies to switch signals and power connections. 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. Breakdown voltages coil rating coil voltage rating all terminals 60 hz rms contact material electrical life mechanical life nominal open max. Xt iec overload relays eaton s mission is to improve the quality of life and the environment through the use of power management technologies and services. Relays are classified into several types based on their functionality and application they are implemented for. They are used in large quantities for the indirect control of motors, valves, clutches and heating equipment. Relays on the other hand can and often are both normally open and or normally closed depending on the desired function. If the seriesconnected heaters get too hot from excessive current, the normallyclosed overload contact will open.
Mercury contactors solid state relays liquid level control. Sometimes called ice cube relays because they are small and square and with clear plastic like an ice cube. Long life the jm family of contactors and relays offers superior performance. Operated application alrt, talrt contactors are mainly used for controlling 3phase motors and more generally for controlling power circuits up to 690 v a. Ppt contactors powerpoint presentation free to view. 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 components of a starter that may be replaced are the contacts. Instructions for the installation, configuration and wiring of the c30cn eletrically and mechanically held lighting contactors. Iec industrial control relays for use in 24v, 120v, 220v and 240v applications. Industrial controls catalog updated may 2018 may 2018. One contactor may have several auxiliary contacts, either normallyopen or normallyclosed if required. The more expensive the electrical gear, the greater the number of relays that will.
Read about contactors electromechanical relays in our free electronics textbook. In general contactors are little slower than relays. Mini contactors are space optimized control products for switching resistive or motor loads. A relay is normally used in appliances below 5kw, while a contactor is preferred when the appliance is heavier. These relays are usually rated up to 10 or 15 amps. Electrical troubleshooter for acdc circuits, relays. The contacts are the currentcarrying part of the contactor. Three pole power contactors type mnx 1 four pole power contactors type mcx 4 thermal overload relays type mn 7 mini contactors type mx 8 contactor relays type mx0 9 thermal overload relays type mx r0 11.
Contactors are relays that switch high current loads a. Understanding relays page 4 autoshop, all rights reserved. From general purpose to board mounted relays, we have a huge instock selection of all types of relays and contactors. In addition, these starters are available with contactors up to and including nema size 8. Relays are devices making or breaking electric circuits by their output section driven by operational signal, which is triggered by electric input signal controlled by switching devices. The more expensive the electrical gear, the greater the number of relays that will generally be used. Iec contactors relays a2 springer controls company 96074 chester road, yulee, fl 32097 904 2250575 fax. They are used in large numbers for the indirect control of motors, valves, clutches. Panasonic manufactures a broad portfolio of relays and contactors. The first three steps for selection will be the same. Industrial controls catalog industrial controls sirius. Two ac or dc control contactors are interlocked mechanically and electrically. Electrical controls for heating and air conditioning, contactors, relays, transformers, sequencers, time delays. Mdi quietly became a leader for both relay and float switches.
Contactors electromechanical relays electronics textbook. At es electronics, we pride ourselves on being among the industrys leading contactor and relay distributors. This includes power contacts, auxiliary contacts, and contact springs. Order your control relays and iec control products today. Compact size the contactor relay mounting profile is approximately 1 34. 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. Many devices called relays use similar techniques and topologies. Relays and contactors from general purpose to board. Relay setting range a fuses to be used with selected relay for use with contactor. Two typical manual contactors still in use today engineers eventually made a breakthrough with the magnetic contactor.
Relays and contactors panasonic industrial devices. Ep071 for the command of vlv circuits use interface relays. Eatons lighting contactors are designed to provide a safe, convenient means for local or remote switching of tungsten incandescent filament or ballast fluorescent and mercury arc lamp loads. The af contactor technology revolutionizes how we use contactors and allows use in all parts of the world and in all network conditions. Whatever the application, the function of the contactor is always the same.
In addition, these starters are available with contactors. Lastly, contactors are commonly connected to overloads that will interrupt the circuit if the current exceeds a set threshold for a selected time period, usually 1030seconds. Our relay products include cots commercial offtheshelf, milspec, plus highly specialized, and customdesigned products. The xt iec contactors are powerful, efficient and versatile, and can be combined with our full range of electronic overload relays and bimetal relays. These classifications include electromagnetic, solid state, high voltage, thermal relays, and so on. Unit 19 motor controls big book flashcards quizlet. Class 14 esp100 starters use the same contactors as class 14 nema starters equipped with bimetal overload relays for nema sizes 00 through 4, but are supplied with a class 10, 20, or 30 esp100 solidstate overload relay. A contactor is a large relay, usually used to switch current to an electric motor or another highpower load. The auxiliary contact is often used in a relay logic circuit, or for some other part of the motor control scheme, typically switching 120 volt ac power instead of the motor voltage. Additionally, contactors are commonly rated for up to v, while relays are usually rated to only 250v. M contactor relays m mini contactor relays mini contactor relays abb mini contactor relays abb m contactor relays abb m mini contactor relays 3pole contactor relays 3pole mini contactor relays abb 3pole contactor relays abb 3pole mini. Similarly, little is specifically mentioned regarding application of telecommunications type relays.
By affixing the ce mark to our products gigavac is demonstrating compliance with a common set of laws required by all of the countries in the eea to allow. Got our start in 1975 as a small family owned business. When selecting between the two, some very general rules you can follow to help. Contactor relays contactor relays contactor relays are often used in control and regulating functions. Xt iec contactors configuration contactors and starters eaton. Mercury displacement industries or known better as mdi inc. Control and chapterb11 tesys p c rotection omponents from. Contactors are used in applications ranging from the light switch to the most complex, automated industrial equipment. What is the difference between a contactor and a relay. Relay design id relays are either normally open or normally closed. Relays and contactors terminal type coil grounded to case spno terminal type isolated coil spno terminal type isolated coil spdt 1. Large electric motors can be protected from overcurrent damage through the use of overload heaters and overload contacts. A relay is used only in control circuit while a contactor can be used in both control and power circuits.
This is to help protect the equipment downstream of the contactor from damage due to current. The industrial controls catalog as a single interactive pdf file. Panasonic relays with forcibly guided contacts according to en50205 are used for safety. Contactor overloadbimetallic relay overloadsolidstate relay aux. Variations of manual contactors are still in use today. Contactors and relays 5 contactor relays contactor relays contactor relays are often used in control and regulating functions. In 1990, mdi added mercury floats to its list of manufactured products. Gigavac contactors and battery disconnect products are ce approved and comply with essential requirements of the relevant european health, safety and environmental protection legislations.
M mini contactors relays contactor relays for auxiliary. Difference between contactor and relay compare the. It takes a relatively small amount of power to turn on a relay but the relay can control something that draws much more power. This site is like a library, you could find million book here by using search box in. Read online contactors and relays eaton book pdf free download link book now. The parts that can be replaced on a contactor are the contacts both moving and stationary, the holding coil, and the contact holding springs. Te supports the commercial and military aerospace industry with knowledgeable. Since interferencefree disconnection is impossible without. Contactors contactors are relays that switch high current loads a. Contactors and relays eaton pdf book manual free download.
Last week we talked about the standard din numbers used on relays and the incredible utility they represent. Relays product category omron industrial automation. 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. Low power consumption coils provide energy savings and. A contactor is an electrical device which is used for switching an electrical circuit on or off. Understanding relays page 6 autoshop, all rights reserved.
A relay is an electrical switch that uses an electromagnet to move the switch from the off to on position instead of a person moving the switch. Overload relay 1ct m m motor 3ct to 120 v separate control ot is a switch that opens. Electrical troubleshooter for acdc circuits, relays, contactors and plcs photo credit. A contactor is a control device that uses a small control current to energize or deenergize the load connected to it. A contactor has a frame, plunger, and a solenoid coil. The manual contactor was a big improvement over the knife blade switch.
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