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NDC1T-4011

3 pole contactor ac contactor 40A contactor ac

Manufacturer P/N: NDC1T-4011

Brand: Nader

US $28.46 /Piece

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NDC1T-5011

3 pole contactor a/c contactor 50A ac contactor

Manufacturer P/N: NDC1T-5011

Brand: Nader

US $36.01 /Piece

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NDC1T-6511

3 pole contactor ac contact 65A ac contactor switch

Manufacturer P/N: NDC1T-6511

Brand: Nader

US $45.17 /Piece

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NDC1T-4011TH

NDC1T 40-65A Series contactor on ac unit 3 pole contactor a/c contactor

Manufacturer P/N: NDC1T-4011TH

Brand: Nader

US $28.46 /Piece

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NDC1T-5011TH

50A ac contactor YES ac unit contactor

Manufacturer P/N: NDC1T-5011TH

Brand: Nader

US $36.01 /Piece

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NDC1T-6511TH

NDC1T 40-65A Series ac unit contactor 3 pole contactor contactor for ac unit

Manufacturer P/N: NDC1T-6511TH

Brand: Nader

US $45.17 /Piece

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NDC1-0911

1NO+1NC contactor ac unit 3 pole contactor a/c contactor

Manufacturer P/N: NDC1-0911

Brand: Nader

US $6.79 /Piece

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NDC1-1211

1NO+1NC ac contactor switch 12A contactor on ac unit

Manufacturer P/N: NDC1-1211

Brand: Nader

US $7.11 /Piece

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NDC1-0911TH

3 pole contactor ac contactor switch 9A contactor ac

Manufacturer P/N: NDC1-0911TH

Brand: Nader

US $6.79 /Piece

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NDC1-1211TH

3 pole contactor ac contactor switch YES ac contact

Manufacturer P/N: NDC1-1211TH

Brand: Nader

US $7.11 /Piece

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  • Total 28 results, 2 pages
About product and suppliers:

Quisure.com offers 28 440v coil ac contactor products, About 100% of these are AC Contactor with AC Control Circuit.

These products have different characteristics and advantages. A wide variety of 440v coil ac contactor options are available to you.

At present, you choose 440v coil ac contactor. You can contact us rfq@quisure.com directly to buy. As well as ask for free samples, paid samples samples@quisure.com.

440v coil ac contactor products are most popular in Eastern Asia, South Europe, Mid Asia, and Mid Europe.

These products have obtained certified, such as CE, UL, TUV, CB, RoSH, CCC certification to ensure the product safety.

Find more products in China

Importing from China, One-stop purchase replace a step by step learn guide.

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Premium Related Products

  • NDC1T-4011

    NDC1T-4011

    Brand:Nader

    US $28.46 /Piece

    NDC1T 40-65A Series|40A| 3 pole contactor|1NO+1NC|NO

  • NDC1T-5011

    NDC1T-5011

    Brand:Nader

    US $36.01 /Piece

    NDC1T 40-65A Series|50A| 3 pole contactor|1NO+1NC|NO

  • NDC1T-6511

    NDC1T-6511

    Brand:Nader

    US $45.17 /Piece

    NDC1T 40-65A Series|65A| 3 pole contactor|1NO+1NC|NO

  • NDC1T-4011TH

    NDC1T-4011TH

    Brand:Nader

    US $28.46 /Piece

    NDC1T 40-65A Series|40A| 3 pole contactor|1NO+1NC|YES

  • NDC1T-5011TH

    NDC1T-5011TH

    Brand:Nader

    US $36.01 /Piece

    NDC1T 40-65A Series|50A| 3 pole contactor|1NO+1NC|YES

  • NDC1T-6511TH

    NDC1T-6511TH

    Brand:Nader

    US $45.17 /Piece

    NDC1T 40-65A Series|65A| 3 pole contactor|1NO+1NC|YES

FAQ

1. What is a contactor?

A contactor is an electrically-controlled switch used for switching an electrical power circuit. Differ from general-purpose relays, contactors are designed to be directly connected to high-current load devices. Relays tend to be of lower capacity and are usually designed for both normally closed and normally open applications. Contactors are designed with features to control and suppress the arc produced when interrupting heavy motor currents.


2. What is the difference between contactor and relay?

Contactors and relays are two closely related, both of them are electrically operated switches used for control and switching of loads.

Contactors and relays have similar construction. Both have an external envelope to protect all the internal parts from the external environment. An electromagnetic coil is provided for opening and closing of contacts. The contacts are opened and closed by exciting this electromagnetic coil.

A Contactor is used for switching of motors, capacitors, lights etc, that drains very high current. It has at least a single pair of three phase input and output contacts. Contactors can carry with additional auxiliary contacts that may be either NO or NC. Switching is achieved by energization and De-energization of the contactor coils. Contactors are chosen upon the ampere ratings of the load. Contactors require an additional supply (either AC or DC depending upon the type of contactor we use) for excitation. It is used for power switching.

A relay consists of at least two contacts and an excitation coil. These contacts may be normally open or normally closed. These contacts are closed or opened by exciting the coil. Relays are used for switching of control circuits and cannot be used for power switching with relatively higher amp.


3. What is a Contactor Components?

Coil or Electromagnet: This is the most crucial component of a contactor. The driving force that is required to close the contacts is provided by the coil or electromagnet of the contactor. The coil or electromagnet and contacts are protected by an enclosure.

Contacts: Task of on or off is done by the contacts. There are different types of contacts main contacts, auxiliary contacts. Each type of contact has an individual role to play.

Enclosure: Contactors also feature an enclosure, which provides insulation and protection from personnel touching the contacts. The protective enclosure is made from polycarbonate, polyester, Nylon 6, Bakelite, or thermosetting plastics.


4. Why contactors are used?

When a relay is used to switch a large amount of electrical power through its contacts, it is defined by a special name: contactor or name contactor relay. Contactors typically have multiple contacts, and those contacts are usually normally-open, so that power to the load is shut off when the coil is de-energized. So the most common industrial use for contactors is the control of motors.


5. How many types of contactors are there?

Contactors come in many forms with varying capacities and features. Differ form a circuit breaker, a contactor is not intended to interrupt a short circuit current. Contactors range from those having a breaking current of several amperes, for example, 25A, 32A, 40A, 50A, to thousands of amperes and several V to many kilovolts. We select contactor according to motor's participation. On the other side, The physical size of contactors ranges from a device small enough to pick up with one hand, to large devices approximately many meter on a side.


6. What is the difference between AC contactor and DC contactor?

The main different is the arc extinguishing devices. AC contactor adopts a grid arc extinguishing device while the DC contactor adopts a magnetic quenching arc extinguishing device. AC contactor has a large starting currents, its maximum operation frequency is about 600 times an hour, while that of DC contactor can be 1200 times an hour.


7. How do you use electrical contactors?

A contactor is an electrically-controlled switch used for switching an electrical power circuit. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, for example we can use a 24-volt coil electromagnet to control a 230-volt motor switch.


8. Why contactor is used?

A contactor is a large relay, usually used to switch current to an electric motor or another high-power load. Large electric motors can be protected from over current damage through the use of overload heaters and overload contacts.