Different Types Of Contactors And Their Working?

A contactor is an electrical device that you can use to switch an electrical circuit. It can relay a signal that it receives and sends it back, making it a particular type of relay. Typically, you can use the relay in applications that require a low amount of current. You can also use the contactor for more current applications. These contactors function ideally and have unique features that make them easier to mount in the field. They are also compact and can serve various purposes. This article will provide you with a detailed overview of the different contactors and their work.

How Do Contactors Work?

Current goes from the external control circuit through the contactor, an electromagnetic core. The coils provide a magnetic field that connects the moving contactor to the floating contact. The current then passes through the connections which link to the main load. It de-energizes the coil when it removes the electric flow, and the magnetic force falls to zero. The Spring force has to overcome the back force of the electric contactor to produce a desired amount of energy.

What are the Major Parts of Contactors?

To learn what a contactor is, you should know the various parts. It has three essential components according to the contactor wiring diagram:

* The Coil/Electromagnet 

The coil provides the driving force that closes the contact. You can use many types of materials to make an electromagnet. Materials like copper wire, steel wire, and iron filings are all possible composites that you can wrap around a magnetic core. The coil has a fixed one and a movable part with a spring connecting both parts. This structure creates a spring-based mechanism that works as an elastic band.

* Contacts 

Contacts are beneficial for managing the current contactors. There are many different contactors: auxiliary contactors, power contactors, and spring-loaded contactors; two are continuous power contactors: stationary and movable contactors. For making contacts, the material should meet high property requirements. It should withstand erosion and mechanical stress, something the solder paste usually cannot survive.

* The Frame or Enclosure 

You can use the enclosures inside switched contactors to prevent the internal parts from contacting the outside environment. The contactors shield the contacts from dust, bad weather, explosion hazards, and oil and are also safer and more convenient because of a proximity switch.

Significant Difference Between AC Contactors and DC Contactors?

If you are frequently around electronics, there’s a good chance that you already know what power contactors do. They are electrical devices that switch circuits on and off through special relays. Power contactors are more common than it may seem, and people use them in applications like electric motors that have multiple contacts, often referred to as contacts. Manufacturers typically make power contactors depending on the application, features, and capabilities they provide. We can classify them into AC contactors or DC Contactor. The difference between them lies in the providers and end-users.

The Major Differences Between AC Contactors and DC Contactors are as Mentioned Below:

• Contactors are devices that you can use to conduct electricity through a wire, with one type of contactor being AC and the other DC. The main difference comes in how manufacturers construct them. AC contactors have a grid arc extinguishing device, while DC has a magnetic arc extinguishing device.
• The alternating current contactor uses the principles of alternating current. It has an iron core and outer layer made from silicon steel, preventing eddy current and hysteresis loss. DC contactors do not require lamination because manufacturers make them durable, long-lasting materials. That means you can build them using cast iron or a type of steel that lasts for a long time.
• Silicon steel plating on contactors is essential to prevent overheating. There is no heat from the DC, unlike AC, so iron rods need no plating protection in a DC contactor.
• The DC contactor has a U shape, while the AC unit contactor has an E shape.
• One of the most important metrics you must consider is the maximum operating frequency. The DC contactor has a max operational frequency of 1200 times per hour, while AC contactors have 600 times per hour.
• The design of the AC contactor allows functioning at lower resistances. Many of the coils that people use in these products are thicker and smaller, ensuring you get adequate space between each loop not to overheat. They can overcome heavy resistance and provide more turns without overheating. You can spiral the coil quickly into a thinner cylindrical shape because there’s no heat generation in DC contactors.

Available Products

GLC1 Industrial AC Contactor

With new technology and automated production, automatic testing, and QA equipment, the GLC1 AC contactor can meet your needs. That makes it a high-quality product. GLC1 AC contactor is a reliable product and has a patented design that allows the user to maintain the quality of their power supplies. GLC1 AC contactor is also very affordable, making it an ideal choice for any business.

GEYA GLC1 AC Contactor technical parameter：

Contactor Model		GLCl-09 (09Z)	GLC1-12 (12Z)	GLCl-18 (18Z)	GLCl-25 (25Z)	GLCl-32  (32Z)	GLCl-40 (40Z)	GLC1-50 (50Z)	GLC1-65 (65Z)	GLC1-80 (80Z)	GLC1-95 (95Z)
Main circuit characteristics
Rated insulation voltage (Ui)		690
Conventional thermal current(lth)		20	20	32	40	50	60	80	80	100	100
Rated operating current(le)  A	380V,AC-3	9	12	18	25	32	40	50	65	80	95
	380V,AC-4	3.5	5	7.7	8.5	12	18.5	24	28	37	44
	660V,AC-3	6.6	8.9	10.6	18	21	34	39	42	49	49
	660V,AC-4	1.5	2	3.8	4.4	7.5	9	12	14	17.3	21.3
Rated operating power(Pe) kW	380V,AC-3	4	5.5	7.5	11	15	18.5	22	30	37	45
	380V,AC-4	1.5	2.2	3	4	5	7.5	11	15	18.5	22
	660V,AC-3	5.5	7.5	9	15	18.5	30	33	37	45	45
	660V,AC-4	1.1	1.5	1.7	4	5.5	7.5	11	11	15	18.5