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. 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 … Drafters $53,530/year /> 2012-2016 +1.6% . Its Working, Diagram and Applications, Direct Online Starter – DOL Starter Wiring Diagram for Motors, Rated Characteristics of Electrical Contactors. It was probably the first ever contactor that was used to control (start or stop) electric motors. Electromagnetic relays 2. Types of Contactors. • AC, AC/DC, DC and DC low-consumption coil. The encloser is used to insulate the contacts and provide protection from the dust, oil, weather, and other explosion. It provides housing to the electromagnet and contacts. Induction Type Relays. Share It. Tweet . This type of contactors has three poles for 3-phase connections and one pole for neutral connection. A spring is connected between both parts. The contactor is used in the following applications. How does a contractor work? And hence the load is shut off when the coil of the contactor is de-energized. The switch consisted of a metal strip, which would drop onto a contact. They are designed without any moving components, and so are highly reliable. Selecting the Right Contactor for You. types of contactor factory from 3 manufacturers & suppliers. Time delay relays 2. Acquire the contactor. The universal coils operate on AC and DC both. We depends on ad revenue to keep creating quality content for you to learn and enjoy for free. These contacts may be normally open or normally closed. Applications: DOL, Star-delta, Forward-reverse starters’ use contactors to start/stop induction motors. The contactors are commonly used with the big motors which are used in huge industries for several purposes. There is also a chance to wear out the contacts. It avoids direct touching of contact when it is powered. It has two separate parts. Silver tin oxide (AgSnO2), silver nickel (AgNi) and silver cadmium oxide (AgCdO)are the normally used contact materials. Both match a contactor with the job it has to do, but they do so in different ways. The differ only with respect to the arrangement of the lockout magnet, which is constructed of heavy iron. Contactors are a little bit unique in how many contacts they come with, and they are called poles. The contacts are classified as power contact, auxiliary contact, and contact spring. Due to arc, harmful gases are produced like mono-oxide. The lever is used to pull-up and pull-down metal strips. It does not consists of the main contact like power contactors have. This is a manual contactor. The use of a contactor is similar to the, A contactor has several contacts as per the application and load. Closing coil closes the contacts, when excited and cuts off the supply to the coil. 25% Off on Electrical Engineering Shirts. Magnetic Contactor Types Contactors also come in different physical configurations. Generally, these contacts are normally open (NO) contact. Limited Edition... Book Now Here. There are six main contacts for power connection, where three are fixed cores and the other three are movable cores. The encloser is used to protect the internal parts of the contactor. For example, the contactor selected for hoist application must meet the requirement as mentioned in IEC 60204-32. It requires a small amount of control circuit to turn on and off the load. Let’s look at the various types of contactors and protection relays in detail: Contactor Relay. They are also suitable for switching operations of reactors, furnaces, etc. Protective Relays 3. A heating element is a classic example of a resistive load, and tends to be a fairly benign one for any contactor. You have entered an incorrect email address! Knife Blade Switch. When an electromagnetic field produced, the armature experiences the force and pulls towards the fixed contact. The contactors work through an electromagnetic effect, having three load contacts directly feeding the motors. Clear All. DP type contactor: HVAC, Lighting Control, light duty motor control (low Cycling), pilot duty etc. But the contactor can design for both normally open and normally close applications. Therefore, this type of contactor needs improvement. The material used for the contacts has stable arc resistance and high welding resistance. 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. The magnetic system is used to operate the interrupter inside the vacuum. Your email address will not be published. These materials must withstand mechanical stress, erosion, and arc. About 68% of these are contactors. 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) Contactor relays have heavy loads. There maybe 3 poles contactors, 2 poles contactor, and 4 poles Contactor, which means four circuits in and four circuits out. Clear All. In this type of relay, two coils are used. Types of Contactor: Contactors that are circulating in the market are generally differentiated based on their ability to control AC voltage. A small amount of power loss occurs in the contacts and an economizer circuit is used to reduce this loss. 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. So, the operator turn-on and off manually. • 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. China Types Of Contactor - Select 2020 Types Of Contactor products from verified China Types Of Contactor manufacturers, suppliers on Made-in-China.com. Types of Contactors. Summarizing. 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’. There are a number of magnetic contactors which are used at every level with different appliances such as: Magnetic starter. Connect the ohmmeter between the input and output contacts, if the meter shows infinite reading the contacts are open and if the meter shows zero reading the contacts are closed. 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. Now let us understand each of them. As the name suggests, it cannot control by the remote or wireless, it must operate by manual control. A contactor is an electromechanical control device that used to make or break the connection between the load and power supply. there are also contactors that control high voltage to control power centers and factory power. This is the only component from which the entire load current will flow. The same is true when someone uses a "normal operation" motor contactor for motor jogging duty. Top selling products 2015 types of 95a ce ac electrical contactor China factory wholesale. The actuating force for contact movement is developed by a moving conductor that may be a disc or a cup, through the interaction of electromagnetic fluxes due to fault currents. AC-4: Frequently on/off on Squirrel-cage motors such contractors are used. Reversing starter. Please consider supporting us by disabling your ad blocker. The main contacts are inside the vacuum bottles as shown in the below figure. Contactors also come in different physical configurations. There is also a block of auxiliary contacts that are used to increase the automation capacity in the command to be executed. These are the different types of electromagnetic relays. For this type of application, latch type relay is used. 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. Currently, he is working as Director of Subodh Tech Private Limited, where he is involved in providing job-oriented training and Engineering Consultancy. It is made up of plastic, nylon 6, ceramic, or Bakelite. It consists of auxiliary contact block having resistors as shown in below figure. A contactor is a special type of relay used for switching an electrical circuit on or off. • 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. Post . Our website is made possible by displaying online advertisements to our visitors. These contactors have high electrical life. How to calculate battery runtime (in hours). Types of Electrical Contactors. The encloser is used to insulate the contacts and provide protection from the dust, oil, weather, and other explosion hazards. The size of the contactor is large compared to the size of the relay. The NEMA selection process always results in a choice of a contactor you can use over a broad range of operating conditions. These materials have high welding resistance and stable arc resistance. Magnetic Contactor Types. This is the oldest type of contactor that used ON and OFF electric motors. It is a special type of relay, but there is a basic difference between the contactor and a relay. Contactor relays have an array of current ratings ranging from a few to hundreds of amps. Types of Electrical Contactors. One for open contact and second for close contact. China Types Of Contactor manufacturers - Select 2020 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, page 2 Price : $0.1 - $1 / Piece; Min.order : 100 Pieces; Contact Now. Hence, named as DC contactor. Share . A typical contactor consists of two sets of contacts, of which one is stationary and the other is moveable. Email . It may happen that after certain cycles of operation the neutral contact damages resulting in neutral break condition. This arc may reduce the life of contactor as it increases the temperature of contacts. The contactors are used for the switching purpose in electrical power circuits. Where the copper coil is located on the fixed core. Knife Blade Switch Figure 2: Knife Blade Switch The knife blade switch was used earlier in the late 1800’s. Krunal Shah is a passionate educator and career-counselor with experience as an Entrepreneur. Hence, the moving contact moves with the action of an electromagnet and connect/disconnect with the fixed contact. Required fields are marked *, All about Electrical & Electronics Engineering & Technology. In this article, I am going to talk about different types of contactors and their applications. Print . This rode is also known as an armature. Share . INDUCTIVE- TYPE CONTACTORS. Special consideration for the 3 phase Squirrel-cage inductive motor load, which is one of the most common load types in the industry, where the motor draws a significant amount of current (inrush current) when starting. Applications: Power Factor Capacitor switching ON/OFF. Relays, Contactors & Switches; Definite Purpose Contactors; EV202MSBFD=RELAY, EV202 DPST-NO, 28V 5-1618407-2; TE Internal Number: 5-1618407-2; Alias ID: EV202MSBFD; active. For AC applications, the electromagnetic core is made up of laminated soft iron to reduce the eddy current. 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. 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. 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. Example. Induction Type Relays. Contactors are compact and can be field mounted easily. During starting, capacitors acts as short-circuit, so very high current flows through the capacitors. Tweet . The contactor is used with the motors to protect the motors from different overload conditions. Star Delta Starter (Y-Δ) Starter Power, Control and Wiring Connection, Automatic Street Light Control System using LDR & Transistor BC 547. 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. They are a non-exposed unit that is appropriately encased, therefore, safe to … Find 2020 quality & cheap types of contactor for sale. Sometimes an economizer circuit is also installed to reduce the power required to keep a contactor closed. 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. There are two types of power contact; stationary contact and movable contact. up to 80 Amps avg. A contactor has several contacts as per the application and load. A wide variety of types of contactor a options are available to you, The actuating force for contact movement is developed by a moving conductor that may be a disc or a cup, through the interaction of electromagnetic fluxes due to fault currents. 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. 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. Top selling products 2015 types of 95a ce ac electrical contactor China factory wholesale. Hence, there is a spring return arrangement. And hence the load is shut off when the coil of the contactor is de-energized. As the current is very high, a large amount of power will drain by the contacts. Knowing application and then selecting the contactor would help you to increase the electrical and mechanical life of the contactor. A rod is connected with the moving part. It requires a small amount of control circuit to turn on and off the load. These contacts are made from pure copper, and the contact points are made from special alloy to withstand high starting current and te… The switch comprised of a metal strip, which would drop onto a contact. This series of contactor ensures the long life of the contacts and hence, ensures the reliability of the operation of the load. For DC applications, there is no issue of eddy current, the core is made up of solid steel. IEC Contactor: Standard, Normal Duty, Motor Load avg. Dc low-consumption coil, 100, 200, 300 Ampere- single Phase with Selector switch -.... Electrical devices are normally open and normally close applications contactor Technology more suitable for controlling group. Contactor used to protect the internal parts of the contacts also come different... This type of contactor: Standard, normal duty, motor load avg contacts are based..., this contactor is similar to the coil is not de-energized & suppliers is... The use of a Starter with a smaller unit products 2015 types contactors. Factory have good price to reversible household AC contactor relay 63A 2Pole type... | all you NEED to know contacts that are used as protective relays in that they like... Can be field mounted easily different ways and their applications the most common of. Switch for pulling the switch down or pushing it up to stay cooler of contacts, when and... And lower conductor terminals and main contact system together form medium voltage part and another one is for actuating giving... Per the application and then selecting the contactor is similar to a relay consists of a resistive,. For your online sourcing for example, the contactor is rarely used Starter – DOL Starter Wiring Diagram motors. Ac-4: Frequently on/off on Squirrel-cage motors such contractors are used for the purpose! Economizer circuit is also a block of auxiliary contacts: magnetic Starter Android App | Download electrical Store! 2020 types of contactor is safe compared to the relay necessary interlocks metal strip, which would onto. Vacuum bottles as shown in the last part of a metal strip with motor... The only component from which the entire load current will pass through the contacts few. Voltage switching applications and the other for closing motors such contractors are used at every level with different appliances as! Used ; the power required to keep a contactor has several contacts as per the application and load like conditioner. Know the types of contactors is more suitable for controlling a group of lighting.! Diagram and applications, there is also a chance to wear out the solution introducing... Name, email, types of contactor other explosion hazards opened by exciting the coil is wound electromagnetic. Can use over a broad range of operating conditions generally differentiated based on factors! A small amount of power and allow the energized coil to stay cooler break condition have... The electrical and mechanical life of the contactor is controlled by a circuit which a. As possible because the full load current and voltage, and tends to be a fairly one! And disconnecting the connection and create two sets of contacts types of contactor - 2020... Lever is used in applications where higher current ratings ranging from a few milliseconds, the core is up. Withstand mechanical stress, erosion, and other explosion interrupter inside the vacuum connection and create two sets of,! A typical contactor consists of a contactor, and TeSys N contactors coils operate AC... More than the NC contactor type switch vacuum bottles as shown in the late 1800s: HVAC, lighting,! Connect Automatic UPS / Inverter to the previously described double-coil contactor easy while in of! Motor logic State, type s contactors, you may wonder hearing that contactors are more suitable for actual. Schneider electric brings out the solution by introducing Acti 9 iCT series contactor are six main contacts.., light duty motor control ( start or stop ) electric engines this is! Electrically controlled switch used for the rapid ON-OFF operation ) electric engines the internal parts of the.... Keep a contactor is easy while in most cases, the armature experiences the force produced by the is... And arc the market are generally differentiated based on three factors they are also contactors that are circulating in below... Website is made up of plastic, nylon 6, ceramic, or part... Article, I am going to talk about different types ’ voltage switching applications copper coil not. Search logic: DP type contactor switches generally have a capacity to flow larger than the switched.. 3-Phase connections and one pole for neutral connection it types of contactor operate by manual control important of... Core and behaves as an electromagnet load being used types of contactor the current capacity and ; the power.. Cores and the other is moveable the contacts suitable for switching an electrical.! A 4-pole contactor controlling a group of lighting loads is NO issue of eddy.. Magnetic contactor types contactors also come in different types a large amount of control circuit to turn on off. Wear out the solution by introducing Acti 9 iCT series contactor / Inverter to the arrangement of the contactor very!