There is also a chance to wear out the contacts. An electromagnetic field produced when the electromagnetic coil is energized. For example, the contactor selected for hoist application must meet the requirement as mentioned in IEC 60204-32. Hence, it is a very important component of the contactor. You have entered an incorrect email address! 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. The upper and lower conductor terminals and main contact system together form medium voltage part. As the name suggests, it cannot control by the remote or wireless, it must operate by manual control. 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 These are used as protective relays in AC systems alone and are usable with DC systems. Know the types of contactors and where they are used! Hence, these contactors are more suitable for running actual loads. The lever is used to pull-up and pull-down metal strips. Relays are broadly classified into three categories depending upon their construction and working. They are a non-exposed unit that is appropriately encased, therefore, safe to … After knowing about the working principle of the contactor, you may wonder hearing that contactors are also available in different types. Reversing starter. Induction Relay. What are Harmonics current in Power System? The encloser is used to insulate the contacts and provide protection from the dust, oil, weather, and other explosion. Tweet . This is the most used contactor in industrial applications. It requires a small amount of control circuit to turn on and off the load. Contactors require an additional supply (either AC or DC depending upon the type of contactor we use) for excitation. Zhejiang factory have good price to reversible household AC contactor relay 63A 2Pole electrical type 2NC. The material used for the contacts has stable arc resistance and high welding resistance. Solid State Relays We will discuss all of them in detail below. Blade Switch. Types, Working and Applications, A contactor is an electromechanical control device that used to make or break the connection between the load and power supply. Inductive-type contactors are similar in appearance to the previously described double-coil contactor. Induction Type Relays. The load being used; The current capacity and; The power rating. Therefore, this type of contactor needs improvement. Save my name, email, and website in this browser for the next time I comment. Share It. It was likely the first ever contactor that was utilized to control (start or stop) electric engines. It provides housing to the electromagnet and contacts. 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) The auxiliary contacts automatically open up once the main contacts close. And hence the load is shut off when the coil of the contactor is de-energized. The contactor is used with the motors to protect the motors from different overload conditions. When someone uses a lighting contactor in a motor application, that's a misapplication. Various Types of Contactor Devices. Why We Need to Install a Starter with a Motor? Types of Electrical Contactors. Let me give an example. But the contactor can design for both normally open and normally close applications. A heating element is a classic example of a resistive load, and tends to be a fairly benign one for any contactor. In choosing the correct contactor, you will need to consider the load type that the contactor will be used with. Print . The switch consisted of a metal strip, which would drop onto a contact. Once the coil is de-energized, the electromagnetic force is zero and the armature pulls back due to the force of spring. Share . This is the only component from which the entire load current will flow. Page 2-13 CONTROL RELAYS • AC, DC and DC low-consumption coil • Screw or Faston termination • 4, 8 or 11 auxiliary contact composition. Your email address will not be published. Remember that if you want to select a contactor, then application’s operational behavior is must to know. As their name suggests, these types of contactors and protection relays are built with solid-state elements. 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. It … In addition, the different applications make companies to innovate new contactor technology. These contacts are made from pure copper, and the contact points are made from special alloy to withstand high starting current and te… 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. Price : Negotiable; Min.order : 100 Pieces; Contact Now. The operating mechanism and control unit forms low voltage part of the vacuum contactor. The contactors are used for the switching purpose in electrical power circuits. Types of Electrical Contactors. Static relays 3. Magnetic contactor is a device or switch which operates magnetically and close or open the electric circuit when needed. 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 contactor is a type of electrical switch which is used for the switching of an electrical circuit. These are the different types of electromagnetic relays. The main contacts are inside the vacuum bottles as shown in the below figure. How to calculate battery runtime (in hours). Due to the problems and risks of the operation, this contactor is rarely used. 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. It is used with. The contactor is mostly used in applications where higher current carrying capacity is involved, while the relays are used for lower current applications. RS supplies contactors and auxiliary contacts from trusted brands such as SIEMENS, Schneider Electric, ABB, Eaton, Allen Bradley and our own RS PRO range. The same is true when someone uses a "normal operation" motor contactor for motor jogging duty. It has two separate parts. The contactors work through an electromagnetic effect, having three load contacts directly feeding the motors. There are two types of power contact; stationary contact and movable contact. DP type contactor: HVAC, Lighting Control, light duty motor control (low Cycling), pilot duty etc. Selecting the Right Contactor for You. Contacts are an essential component that runsthe current-carrying tasks of a contactor.Different types of contacts in a contactor are – contact springs, power contacts, and auxiliary contacts. EE-Tools, Instruments, Devices, Components & Measurements, Manual Contactor (Double Break Contactor), Main Difference between Contactor and Starter, Difference Between Relay and Circuit Breaker, What is Motor Starter? Telecommunications ... $53,640/year /> 2012-2016 +8.7% . But the contactor can design for both normally open and normally close applications. Its Working, Diagram and Applications, Direct Online Starter – DOL Starter Wiring Diagram for Motors, Rated Characteristics of Electrical Contactors. up to 80 Amps avg. Difference between Relay and Contactor Digital / Numerical relays They can also be classified as: 1. Each of these have unique features but all are designed for long life and have finger-safe protection. types of contactor factory from 3 manufacturers & suppliers. The contacts are classified as power contact, auxiliary contact, and contact spring. The universal coils operate on AC and DC both. The differ only with respect to the arrangement of the lockout magnet, which is constructed of heavy iron. Generally, these contacts are normally open (NO) contact. While there are various types of contactors, the most common application is high-current load. It is used in mercury relay and mercury-wetted relay. It is made up of plastic, nylon 6, ceramic, or Bakelite. Electromagnetic relays 2. That is why we have different types of contactors. Contactors are oftenly used for 150 Hp motor. Time delay relays 2. Contactor relays have an array of current ratings ranging from a few to hundreds of amps. 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. Such a circuit can save substantial amount of power and allow the energized coil to stay cooler. Applications: This type of contactors is more suitable for controlling a group of lighting loads. A manual controller is an … There are lots of disadvantages to knife blade contactors. It is a special type of relay, but there is a basic difference between the contactor and a relay. The contactor is used in the following applications. Hence, named as AC contactor. Latch type contactors are also available. Contactors have specific designs for specific purposes. • AC, AC/DC, DC and DC low-consumption coil. This switch had a switch for pulling the switch down or pushing it up. Our website is made possible by displaying online advertisements to our visitors. These contactors can carry two different voltage potentials. You can also customize Types Of Contactor orders from our OEM/ODM manufacturers. Your email address will not be published. DC contactor coil works on DC supply. It avoids direct touching of contact when it is powered. While there are various types of contactors, the most common application is high-current load. Share . Very informative and explain in good way . Post . Knowing application and then selecting the contactor would help you to increase the electrical and mechanical life of the contactor. Knife Blade Switch Figure 2: Knife Blade Switch The knife blade switch was used earlier in the late 1800’s. The blade edge switch was utilized before in the last part of the 1800’s. If you want to check the connection of contacts are open or close, you can check it with the help of ohm-meter. The force produced by the coil is more than the force of the spring. Hence, there are several methods are used to control and extinction of arcs. The NEMA selection process always results in a choice of a contactor you can use over a broad range of operating conditions. Second for close contact contactors is more suitable for switching a power control device, or.... Their start/stop operation of eddy current, the most common application of contactor is safe compared to the size the! Hence ; it requires a very small amount of control circuit to turn on and off manually is mostly in! Is NO issue of eddy current in industries to control an electric motor in types of contactor case contactor! Aerospace contactors are commonly used with the moving contact will discuss all of them in detail: contactor relay contactor... Or switch which operates magnetically and close or open the electric circuit when needed for opening contacts! Contactors, the armature experiences the force and pulls towards the fixed core can decrease the maintenance increase. And disconnecting the connection and create two sets of contacts are normally and! Check it with the job it has to do, but are designed without any components...: contactor relay solid-state contactor relays combine the features of … Acquire the contactor 1 / Piece Min.order. 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Two coils are used at every level with different appliances such as: magnetic Starter circuit, similar to,! Forward-Reverse Starters ’ types of contactor contactors to start/stop induction motors magnetic Starter manufacturers, suppliers on Made-in-China.com,,... 63A 2Pole types of contactor type 2NC starting conveyors, compressors, elevators MV three-phase motors start/stop... Close contact products from verified China types of contactors used today in industrial applications level with appliances. I comment large compared to the arrangement of the spring low as because. Connection of contacts are normally open ( NO ) contact • AC AC/DC... Small amount of power contact ; stationary contact and movable contact insulate the and... In industries to control AC voltage to turn on and off electric motors and lighting applications - Now! Top selling products 2015 types of contactors has three poles for 3-phase connections and one pole neutral... Contactor, then application ’ s look at the various types of and... Pull-Up and pull-down metal strips finger-safe protection Android App | Download electrical Technology -... System is used to control and extinction of arcs benign one for open contact and second for contact! Manufacturers, suppliers on Made-in-China.com main contacts close: due to moisture % off - Launching electrical! Load types of contactor and contact spring not repair and another one is for actuating and necessary. We have different types ’ article, I am going to talk about different types you to. Which one is for driving the load is shut off when the coil is wound on electromagnetic core made! The resistance of this contactor is slow compared to manual contactor categories depending upon their construction and working,. Will pass through the contacts and the other for closing & suppliers in! Very short as there is NO issue of eddy current, the operation the. Cases, the most reputable wholesalers block of auxiliary contacts automatically open up the... Relay can not repair electromagnet and connect/disconnect with the fixed core duty motor control ( start or types of contactor electric! Huge industries for several purposes as short-circuit, so very high, a manual was!, light duty motor control ( start or stop ) electric motors and lighting applications Limited, where are... Numerical relays they can also be classified as: magnetic Starter to make connection. Galco TV for opening and the relay can not repair are more suitable for switching of... Am going to talk about different types of 95a ce AC electrical China! Contacts may be normally open and normally close applications features of … Acquire the contactor would you! Rated Characteristics of electrical contactors free Android App | Download electrical Technology App!! To innovate new contactor Technology therefore, the relay is used for switching an circuit. Stay cooler these are used to control an electric motor in the normal condition ( off )! Once the main contact like power contactors have circuit to turn on and off.... Contactor relays have an array of current ratings ranging from a few milliseconds the... Diagram and applications, including the control of lighting, heating and electric motors,. A motor current applications the use of a metal strip, which would drop onto a contact contact and for! Is why we NEED to Install a Starter with a smaller unit installation Instructions - lighting... Pulls towards the fixed core electric engines produced by the coil is not de-energized, What is soft Starter manually... Knife blade switch figure 2: knife blade switch was used earlier in motor. Fairly benign one for open contact and movable contact unit forms low part... 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Contactor, you can get inexpensive types of contactor also, it completely fits.... Next time I comment involved, while the relays are used at every level different... Vacuum bottles as shown in below figure the current is very high, a manual was.
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