What is a Contactor? What Does It Do?

The contactor is a part that is effective in protecting the motor systems used in high electrical currents and provides switching of the motors. Contactors close the open contacts and open the closed contacts when the power is applied. Briefly; The part that enables the electrical current to be managed and opened and closed is called a contactor. Contactors are distinguished from other switching parts thanks to their fast opening and closing features and long life. Contactor types ; They are directly connected to electrical loads such as pumps, compressors, conveyors, lighting control. Contactors can be controlled remotely and have many contacts. The parts that make up the contactor; copper rings can be listed as core, coil, pallet and contact.

What is a Contactor?

The contactor is the part that provides the transfer of energy from one point to another point and enables the switching of the motor systems. Contractors do not turn off when overcurrent occurs, they are not overcurrent sensitive parts. Therefore, they are not alone; They must be used together with parts such as thermal relay, fuse, motor protection switch. While the contactors are not overcurrent sensitive, these parts can interfere with the situation, stopping the overcurrent. If the contactor is used alone in the contacting process, if high current occurs, damage to the motor may occur. Some of the contractors placed on the pallet are initially closed, and they open when the coils are energized. The main contacts in the contactors are used to operate the motor structures. Command and auxiliary contacts are involved in controlling circuits such as time relay, control relay, overcurrent relay. Contactors ; They are used in engine systems of industry, industry and all other sectors .

What Does a Contactor Do?

A contactor is a part used to switch electrical power circuits. The task of this part is to transfer the energy from the starting point to another point by switching on and off. The feature that distinguishes the contractor from other switches is that it can be controlled remotely and is suitable for frequent opening and closing of the circuit. Contactors, which are preferred in electric motors, are produced for use at high currents. Contractors do not provide any leakage or overcurrent protection in the circuit. It only has the ability to turn the circuit on and off, so additional parts are needed to protect the motor from damaging currents. When contactors are used alone, the possibility of high currents to damage the motor increases. Relays and contactors work on the same principle, but contractors are produced for use with larger currents. There are also different types of contactors. These varieties are; These are parts such as compensation contactor, three-phase contactor. compensation contactor; It is used to control capacitors with 3 phases.

How Does the Contactor Work?

Contactors consist of a spring system and gain functionality with electromagnetism. Relays and contactors have the same working principle. With the energy coming to the coil, a magnetic field emerges and the magnetisms are closed by approaching. In this system, the contractors act as contacts. When the coil is energized, the contacts are closed, and when there is no energy, the contacts open. Contactors that provide motor on, off and remote control can be used in industry, industry and most of the electric motors. Contactors that allow currents to flow must be used with components such as thermal relays and fuses. Since they do not have current protection when used alone, the motor may be damaged when high and leakage current occurs. The most preferred contactor is the 3-pole contactor . This part can take place in DC lighting, heater, lighting systems. 3-pole models used in compensation systems are specially produced for compensations and are called compensation contactors. Contactor selection is made according to the electrical load that occurs in the area where it is used. You can also find the contactor accessories you need . Other factors affecting the choice of contactor are; the number of poles of the load, the nominal operating voltage, the voltage characteristic of the coil, the auxiliary contacts, the dimensions of the load, the auxiliary contacts.