A contactor is an electrical device used to turn electrical circuits on and off. They are used in devices that require high current carrying capacity.
A contactor is an electrical device used to turn electrical circuits on and off. It is a different type of relay. While contactors are used in devices that require high current carrying capacity, relays are used in devices that require lower current. This is the main difference between contactor and relay. Contactors It is small in size and simple to assemble. These electrical devices usually have a large number of contacts. These contacts—usually their standard positions are open—provide operating energy to the load when the contactor coil is energized. Contactors are mostly used in electric motor control.
What are the Main Features of the Contactor?
There are different types of contactors and each type has its own characteristics, usage and application areas. Many different currents and voltages, from a few amps to thousands of amps and thousands of volts, can be interrupted by contactors. These electrical devices are also available in different sizes, from handheld models to one-metre (approximately) models.
High current loads are the areas where contactors are mostly applied. It is known that the capacities of the contactors can handle powers higher than 5000 amps and over 100 kW. Electrical jumps occur when high motor currents are interrupted. A contactor can be used to reduce and handle such electrical jumps.
Working Mechanism of Contactor
With constant current flowing through the contactor to electromagnetic coil energy is provided. Due to the magnetic field created by the excited coil, the contactor core moves the rotor. The circuit connecting the moving contacts and fixed contacts is completed with a contact in the normal position closed (NC). This makes it possible for current to flow through these contacts to the load. When the current is cut off, the energy of the coil is cut off and the circuit switches to the open position. Contactors are known for their fast opening and closing properties.
Different Contactor Types
Blade Circuit Switch: It is part of on-off electric motors and is the oldest contactor type. It consists of a strip rod and a handle. This contactor is manually operated due to the metal strip bar lifting and lowering function of the handle. It has been discontinued due to some drawbacks.
These drawbacks and difficulties are:
- The service life of the contactor is shortened due to frequent electrical jumps.
- Sensitive to moisture and dust
- was potentially dangerous
- two cuts
Manual Contactor: This contactor has replaced the blade switch and improved it. However, manual operation is still part of it. Other important features are:
- Double-break contacts allow simultaneous opening of two circuits, increasing current to confined areas.
- Provides integrity with appropriate internal protection coating
- Working more effectively
- smaller dimensions
Magnetic Contactor: This is the most groundbreaking contactor design ever made. It is frequently used in industrial applications due to its features listed below.
- The process is automatic.
- It offers the safest working conditions.
- circuit to a minimum with control current turns it on and off.
Advantages of Contactors
- Enables faster design: the selection process is easier
- Installation is simple: It is designed to fit more quickly.
- Continuous operating regime: Reliable, safe and secure
- Saves time
- environmental sensitivity
- Reliable and safe control circuits
- Provides space saving and circuit safety
- On-off is done quickly.
- We can handle multiple circuits with a single contactor switch.
- It can be used in both alternating current (AC) and direct current (DC) devices.
- Contactor manufacturing is simple and straightforward.
Ensure Perfect Power On-Off with Premium Contactors
Contactors are designed for power off-on function in heavy machinery. This is an important task that requires the management of electric motors and equipment. It is therefore important to make sure you have the correct contactor before using it.
If you are looking for a dealer, make sure the manufacturer offers a top quality contactor. Do your internet research and reach out to them via the email address and phone number on their website. By finding the right seller, you can get assembly service and expect a discount.