A heating element is a classic example of a resistive load, and tends to be a fairly benign one for any contactor. As their name suggests, these types of contactors and protection relays are built with solid-state elements. Summarizing. They are designed without any moving components, and so are highly reliable. A rod is connected with the moving part. Growth Trends for Related Jobs. The contacts are classified as power contact, auxiliary contact, and contact spring. Page 2-13 CONTROL RELAYS • AC, DC and DC low-consumption coil • Screw or Faston termination • 4, 8 or 11 auxiliary contact composition. As the current is very high, a large amount of power will drain by the contacts. DP type contactor: HVAC, Lighting Control, light duty motor control (low Cycling), pilot duty etc. Drafters $53,530/year /> 2012-2016 +1.6% . A contactor is an electrically controlled switch used for switching a power circuit, similar to a relay except with higher current ratings. The upper and lower conductor terminals and main contact system together form medium voltage part. Its Working, Diagram and Applications, Direct Online Starter – DOL Starter Wiring Diagram for Motors, Rated Characteristics of Electrical Contactors. A spring is connected between both parts. Share . For DC applications, there is no issue of eddy current, the core is made up of solid steel. Applications: This type of contactors is more suitable for controlling a group of lighting loads. The switching time of the contactor is slow compared to the relay. Make sure that the contacts of the contactor are rated in both voltage and … types of contactor factory from 3 manufacturers & suppliers. Top selling products 2015 types of 95a ce ac electrical contactor China factory wholesale. These contactors have high electrical life. The force produced by the coil is more than the force of the spring. When a force of coil is more than the force of spring, both contacts are connected and when the force of spring is more than the force of the coil, both contacts are extracted with each other. The switch consisted of a metal strip, which would drop onto a contact. A contactor is controlled by a circuit which has a much lower power level than the switched circuit. Contactor Types Of 380v Ac Contactor TENGEN Brand AC DC Contactor CJX2-1810 1NO 1NC 3Pole DC24V 220V 660V 48V 460V 415V 380V 36V Types Of Contactor $6.99-$16.89 500 Pieces (MOQ) This type of contactors was first introduced in 1800. #6 Manual Controller Contactors. These contacts may be normally open or normally closed. Therefore, the operation of this contactor is safe compared to manual contactor. The wiring diagram of the knife blade switch is incorrect: the model shown is Single Pole Double Throw Switch, so the middle connection should receive the power supply to send it to one side or the other of the switch. Schneider Electric brings out the solution by introducing Acti 9 iCT series contactor. The second problem is the power loss. A wide variety of types of contactor options are available to you, such as 380v, 690v, and 1000v. Single pole contactors are used to operate 12VDC load in the vehicle. The operating mechanism and control unit forms low voltage part of the vacuum contactor. The input of the contactor coil may be AC or DC or in some cases, the universal coil is used as an electromagnetic coil. Star Delta Starter (Y-Δ) Starter Power, Control and Wiring Connection, Automatic Street Light Control System using LDR & Transistor BC 547. It … Very informative and explain in good way . This is a manual contactor. Digital / Numerical relays They can also be classified as: 1. Consider a 4-pole contactor controlling a group of single-phase load. When an electromagnetic field produced, the armature experiences the force and pulls towards the fixed contact. The contactors are designed for the rapid ON-OFF operation. Magnetic contactor is a device or switch which operates magnetically and close or open the electric circuit when needed. Types of Motor Starters and Motor Starting Methods, What is Soft Starter? Installation Instructions - CR360L Lighting Contactor for 60, 100, 200, 300 Ampere- Single Phase with Selector Switch - GEJ-7215. Contactors have specific designs for specific purposes. Applications: MV breakers control circuits. It provides housing to the electromagnet and contacts. Price : $0.1 - $1 / Piece; Min.order : 100 Pieces; Contact Now. Unlike relays, these electrical devices are normally connected directly to the load or current-carrying circuit. Contactors are used for all kinds of electrical and automated applications, including the control of lighting, heating and electric motors. One is for driving the load and another one is for actuating and giving necessary interlocks. Types of Electrical Contactors. Now let us understand each of them. Generally, if the load current is more than 15A, the contactors are used and if the load current is less then 15A, the relay is used. In this type, two coils are available, one for opening and the other for closing. Types of Contactor: Contactors that are circulating in the market are generally differentiated based on their ability to control AC voltage. A very small amount of current will flow through the spring from the supply or external control circuit to excite the core of the electromagnet. Contactors can have one set of contactors for a single phase operation in which one hot conductor can make or break through the contactor or two sets of contacts to make or break two hot conductors in a single phase operation. It is made up of plastic, nylon 6, ceramic, or Bakelite. The NEMA selection process always results in a choice of a contactor you can use over a broad range of operating conditions. It requires a small amount of control circuit to turn on and off the load. And hence the load is shut off when the coil of the contactor is de-energized. While there are various types of contactors, the most common application is high-current load. Hence, the moving contact moves with the action of an electromagnet and connect/disconnect with the fixed contact. These are the different types of electromagnetic relays. The life of this contactor is very short as there is a chance of corrosion of contacts due to moisture. There is also a chance to wear out the contacts. Contactors and relays Contactor relays Eaton Wiring Manual 06/11 5-3 55 The system and the Standard European Standard EN 50011 “Terminal markings, distinctive numbers and reference letters for certain contactor relays” has a direct bearing on the use and application of the modular system. What is a Contactor ? A wide variety of types of contactor a options are available to you, After a few milliseconds, the main contacts close. The load being used; The current capacity and; The power rating. They are a non-exposed unit that is appropriately encased, therefore, safe to … Page 2-15. The contacts are mostly normally … cycling from 9 Amps-630 Amps; NEMA Contactor: Heavy Duty Motor Control, Extreme High Cycling, NEMA rating from 00-5 in size; Generally there are physical differences between the DP contactors, IEC contactors and … The second coil is used for opening the contacts. And return in the normal condition (OFF position). there are also contactors that control high voltage to control power centers and factory power. The contactors work through an electromagnetic effect, having three load contacts directly feeding the motors. In addition, the different applications make companies to innovate new contactor technology. One for open contact and second for close contact. It does not consists of the main contact like power contactors have. A relay consists of at least two contacts and an excitation coil. If you want to check the connection of contacts are open or close, you can check it with the help of ohm-meter. Both match a contactor with the job it has to do, but they do so in different ways. They are experienced China exporters for your online sourcing. The most common application of contactor is in the motor starter. This video outlines the different types of contactors used today in industrial electronics, presented by Katie Rydzewski for Galco TV. It requires a small amount of control circuit to turn on and off the load. Learn more: CONTACTORS | ALL YOU NEED TO KNOW ABOUT CONTACTORS. Types Of Contactors Manufacturers, Factory, Suppliers From China, With superb service and quality, and an enterprise of foreign trade featuring validity and competitiveness, that will be trusted and welcomed by its clients and creates happiness to its employees. AC-4: Frequently on/off on Squirrel-cage motors such contractors are used. Telecommunications ... $53,640/year /> 2012-2016 +8.7% . Types Of Contactor companies ☆ Find Types Of Contactor manufacturers, suppliers, exporters, factories and trading agents Induction Relay. About 68% of these are contactors. Example. • Contactor terminals with bolt, washer and nut • Simple horizontal or vertical interlock • Positive (force) guided contacts (mechanically-linked per IEC) Lovato Electric comprehensive line of contactors can be divided in to three basic configurations as illustrated above. 25% Off on Electrical Engineering Shirts. Due to the problems and risks of the operation, this contactor is rarely used. Here are some common types of contactors: Manual Controller; Due to the potential dangers of using the knife blade switch, the electrical engineers came with another contactor device that offered a wide range of features that were lacking in a knife blade switch. Sometimes an economizer circuit is also installed to reduce the power required to keep a contactor closed. In choosing the correct contactor, you will need to consider the load type that the contactor will be used with. This is an electromagnetic type contactor and it can operate automatically. For example, the contactor selected for hoist application must meet the requirement as mentioned in IEC 60204-32. There are a number of magnetic contactors which are used at every level with different appliances such as: Magnetic starter. The contactors are used for the automation of lights for industrial, commercial, and residential lighting applications. There is a wide range of contactors and protection relays offering that are used to deliver different solutions in fields such as health, marine, hotel, and mining. Acquire the contactor. The use of a contactor is similar to the, A contactor has several contacts as per the application and load. For the low current application, these contacts are made up of silver cadmium oxide and silver nickel and for high current application and DC current, it is made up of silver tin oxide. Michael Evans. The armature of the electromagnet is connected with the moving contact. Price : $2 - $65 / Piece; Min.order : 50 Pieces; Contact Now. While making and breaking of contacts, an arc is produced between the contacts. The contactor is used with the motors to protect the motors from different overload conditions. Hence, these contactors are more suitable for running actual loads. These contractors were developed after the knife blade type became hazardous to use. Post . Growth Trends for Related Jobs. Currently, he is working as Director of Subodh Tech Private Limited, where he is involved in providing job-oriented training and Engineering Consultancy. The contactor is used in the following applications. So, the operator turn-on and off manually. Print . These are of several types … The resistance of this material is as low as possible because the full load current will pass through the contacts. This switch had a switch for pulling the switch down or pushing it up. Knife Blade Switch Figure 2: Knife Blade Switch The knife blade switch was used earlier in the late 1800’s. Where the copper coil is located on the fixed core. Telecommunications ... $53,640/year /> 2012-2016 +8.7% . This is the most used contactor in industrial applications. This device was known as a manual controller. In this type of relay, two coils are used. wholesalers china right angle SMA types of contactor. Definite Purpose Contactor Mounting Type Bottom Mount, 2xM5; PRODUCT. Solid State Relays We will discuss all of them in detail below. There maybe 3 poles contactors, 2 poles contactor, and 4 poles Contactor, which means four circuits in and four circuits out. Common coil voltages are 24V AC and DC coil, and 110V and 230V AC coil options, with many different amp and wattage levels within each individual category. Knowing application and then selecting the contactor would help you to increase the electrical and mechanical life of the contactor. The contactor consists of two iron cores, where one is fixed and the other one is the movable coil and it is an insulated copper coil. TE has extensive capabilities in the design and manufacture of contactors for a wide variety of applications such as HVAC, power supply, locomotives, elevator control and motor controls, aerospace and defense, hybrid, electric and fuel cell vehicles, and charging systems. • UL/CSA general use: 20 to 55A for 4NC types • Operational current up to 125A (DC1 at 55°C with 4 NO poles in series) for photovoltaic applications. There are six main contacts for power connection, where three are fixed cores and the other three are movable cores. Contactors have specific designs for specific purposes. As the name suggests, it cannot control by the remote or wireless, it must operate by manual control. Hence, capacitor duty-cycle contactor is the best choice. For AC applications, the electromagnetic core is made up of laminated soft iron to reduce the eddy current. Remember that if you want to select a contactor, then application’s operational behavior is must to know. The encloser is used to protect the internal parts of the contactor. The contactor is used for high voltage switching applications and the relay is used for low voltage switching applications. But the contactor can design for both normally open and normally close applications. What is the difference between contactor and relay? These contactors can carry two different voltage potentials. You have entered an incorrect email address! These are used as protective relays in AC systems alone and are usable with DC systems. This arc may reduce the life of contactor as it increases the temperature of contacts. Contactor relays have an array of current ratings ranging from a few to hundreds of amps. It consists of the main contact system. Blade Switch. They are also suitable for switching operations of reactors, furnaces, etc. Every contact has a different role to play. Inductive-type contactors are similar in appearance to the previously described double-coil contactor. How does a contractor work? Because the range of available contactors is so vast, it is important to select the correct type and size of contactor for the specific task you need it to do. The name was given to this type of Contactor because it consists of a jaw or a knife, which is used to control the electricity. Therefore, the operation of this contactor is safe compared to manual contactor. • AC, AC/DC, DC and DC low-consumption coil. Various Types of Contactor Devices. Price : Negotiable; Min.order : 100 Pieces; Contact Now. Types of Contactors. TeSys GC, GY, GF; TeSys GC, GY, GF range under modular contactors and relays from 16 – 100 A that are designed for multiple applications in a variety of industries.These contactors are designed for use in modular panels and enclosures and are available in different ratings, which can be used for multiple applications. Static relays 3. The contactors are selected base on load current and voltage, the control range of voltage, and application based on utilization category. Knife Blade Switch. While there are various types of contactors, the most common application is high-current load. They include motor logic state, type S contactors, and TeSys N contactors. Generally, these contacts are normally open (NO) contact. It is made up of plastic, nylon 6, ceramic, or Bakelite. An electromagnetic field produced when the electromagnetic coil is energized. These contacts are closed or opened by exciting the coil. The double break contacts divide the connection and create two sets of contacts. Applications: DOL, Star-delta, Forward-reverse starters’ use contactors to start/stop induction motors. types of contactor manufacturer/supplier, China types of contactor manufacturer & factory list, find qualified Chinese types of contactor manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com. Contactors are a little bit unique in how many contacts they come with, and they are called poles. Please consider supporting us by disabling your ad blocker. Let me give an example. Alibaba.com offers 5,872 types of contactor a products. In the case of contactor also, it completely fits in. If you still do not know about the basics of contactors, no worries, you can find information in this article ‘Contactors: History and Working Principle’. Reversing starter. Drafters $53,530/year /> 2012-2016 +1.6% . It allows you to work with more current in a smaller space. Protective Relays 3. INDUCTIVE- TYPE CONTACTORS. Generally, these contacts are normally open (NO) contact. Generally, it has two parts, one is a fixed part and the second is a movable part. For this type of application, latch type relay is used. You can also customize Types Of Contactor orders from our OEM/ODM manufacturers. Why We Need to Install a Starter with a Motor? This can be as simple as turning a non-inductive heater on and off, or as complex as the switching of highly inductive loads such as series and shunt motors. This switch had a lever for pulling the switch down or pushing it up. Follow, © Copyright 2020, All Rights Reserved 2012-2020 by. Tweet . Both contacts remain in this position until the coil is not de-energized. Get Free Android App | Download Electrical Technology App Now! And the third problem is safety. What is the difference between 2 wire 3 wire and 4 wire transmitters? You can also choose from 150a, 630a, and 200a types of contactor, as well as from 3, 4, and 2 types of contactor, and whether types of contactor is ac, or dc. DC contactor coil works on DC supply. A contactor can function on its own as a power control device, or as part of a starter. China Types Of Contactor manufacturers - Select 2021 high quality Types Of Contactor products in best price from certified Chinese Contactor manufacturers, Circuit Breaker suppliers, wholesalers and factory on Made-in-China.com wholesale types of contactor from 6 manufacturers & suppliers. The use of a contactor is similar to the relay. up to 80 Amps avg. The contactors are commonly used with the big motors which are used in huge industries for several purposes. Aerospace Contactor Aerospace contactors are high-performance, high-capacity, circuit controls designed for aerospace applications. Price : Negotiable; Min.order : 100 Pieces; Contact Now. The most common application of contactor is in the starter that used to turn ON and OFF the equipment like, A contactor is an electrically controlled, The encloser is used to protect the internal parts of the contactor. Our website is made possible by displaying online advertisements to our visitors. This rode is also known as an armature. Contactors are similar to relays in that they behave like remote switches, but are designed specifically for high current applications in power management. Hence, you can decrease the maintenance and increase the system availability inside the factory. Email . Email . We depends on ad revenue to keep creating quality content for you to learn and enjoy for free. These contacts are made from pure copper, and the contact points are made from special alloy to withstand high starting current and te… A typical contactor consists of two sets of contacts, of which one is stationary and the other is moveable. Due to arc, harmful gases are produced like mono-oxide. The magnetic system is used to operate the interrupter inside the vacuum. A contactor has several contacts as per the application and load. A contactor is a special type of relay used for switching an electrical circuit on or off. It has two separate parts. The auxiliary contacts automatically open up once the main contacts close. Silver tin oxide (AgSnO2), silver nickel (AgNi) and silver cadmium oxide (AgCdO)are the normally used contact materials. The full load current will pass through the contacts and hence for large motor, the full load current is very high. That is why we have different types of contactors. The universal coils operate on AC and DC both. Your email address will not be published. Hence, named as DC contactor. 1. AC contactor coil works on AC supply. Tìm kiếm nhà sản xuất types of contactor là lựa chọn tốt nhất và nguồn sản phẩm types of contactor giá rẻ chất lượng cao cho vietnamese thị trường loa tại alibaba.com Magnetic Contactor Types. AC-3: These types of contactors are generally preferred for the starting of Squirrel-cage motors, and switches off motor during the running time which means the contactor can withstand high current continuously. Search Logic: Electromagnetic relays 2. Clap Switch Circuit Using IC 555 Timer & Without Timer, How to Calculate the Suitable Capacitor Size in Farads & kVAR for Power factor Improvement, Star Delta Starter – (Y-Δ) Starter Power, Control and Wiring Diagram, Fleming’s Left Hand Rule and Fleming’s Right Hand Rule. Krunal Shah is a passionate educator and career-counselor with experience as an Entrepreneur. The blade edge switch was utilized before in the last part of the 1800’s. These are the different types of electromagnetic relays. A manual controller is an … The material used for the contacts has stable arc resistance and high welding resistance. Hence, to overcome these disadvantages, a manual contactor was invented. The same is true when someone uses a "normal operation" motor contactor for motor jogging duty. Magnetic Contactor Types Contactors also come in different physical configurations. It may happen that after certain cycles of operation the neutral contact damages resulting in neutral break condition. It consists of a metal strip with a lever. The encloser is used to insulate the contacts and provide protection from the dust, oil, weather, and other explosion. It consists of a metal strip, which acts as a switch in connecting and disconnecting the connection. But the device used for higher current carrying application is known as a contactor and the device used for lower current applications is known as Relay. Contactor relays have heavy loads. Share . Required fields are marked *, All about Electrical & Electronics Engineering & Technology. Magnetic Contactor Types. Print . The contactor is mostly used in applications where higher current carrying capacity is involved, while the relays are used for lower current applications. These materials have high welding resistance and stable arc resistance. Types of Contactors And Protection Relays. In this article, I am going to talk about different types of contactors and their applications. Contactors also come in different physical configurations. It is a special type of relay, but there is a basic difference between the contactor and a relay. © 2020 | Subodh Tech Private Limited | All Rights Reserved, Types of Contactors and their Applications, Contactors: History and Working Principle. Usually, these devices feature multiple contacts. It is used with. Contactors require an additional supply (either AC or DC depending upon the type of contactor we use) for excitation. This is the most used contactor in industrial applications. A general purpose motor control contactor may be suitable for heavy starting duty on large motors; so-called "definite purpose" contactors are carefully adapted to such applications as air-conditioning compressor motor starting. There are two types of power contact; stationary contact and movable contact. This series of contactor ensures the long life of the contacts and hence, ensures the reliability of the operation of the load. Very helpful technical support and educative. These are used as protective relays in AC systems alone and are usable with DC systems. Top selling products 2015 types of 95a ce ac electrical contactor China factory wholesale. The three types of circuits that a contactor might face are (predominantly) resistive, capacitive or inductive in nature (real circuits have all three qualities, but one does tend to dominate). Contactors are rated by designed load current per contact (pole), maximum fault withstand current, duty cycle, design life expectancy, voltage, and coil voltage. Clear All. More details are as follow.