DRH3P60A20R

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Contactors (Solid State) is widely used in the industry, providing a versatile, efficient, and safe solution for controlling power as well as electricity in toughest applications. The DRH3P60A20R is a type of contactor (solid state) that is designed for medium to heavy-duty applications and is recognized for its reliability, high performance, and cost efficiency. In this article, we will explain the application field and working principle of this contactor.

Application Field

The DRH3P60A20R solid state contactor is designed with an integrated heat sink, making it ideal for heavy electrical applications. It is capable of handling up to three primary stages of power supply and one reheat or pilot stage of power. This versatile contactor is suitable for both motor starting and heating duties, making it ideal for a wide range of use cases. It is also used in applications involving the starting, reversing, and integration of electric machines, such as ships, locomotives, elevators, escalators, industrial facilities, and other equipment. Additionally, the contactor can handle large currents (up to 600 A), ensuring reliable operation and long service life even under high-load conditions.

Working Principle

The DRH3P60A20R contactor (solid state) is a three-phase controlled switching device that utilizes thyristors, which are semiconductor devices composed of four alternating N-type and P-type material layers. When an electric current is applied to the thyristors, it causes them to become conductive, thereby connecting the output of the contactor to the load. Conversely, when the current is removed, the contactor is disconnected from the load.

The DRH3P60A20R contactor (solid state) has three anodes rated at 600 A and one cathode rated at 60 A. The three anodes must be activated to initiate operation, and when they are activated, a current will pass through the thyristors, causing them to turn ON and power the load. In addition, the contactor is also equipped with a fuse on the input side that is designed to protect the device from overloading.

In summary, the DRH3P60A20R contactor (solid state) is a heavy-duty switching device that utilizes thyristors to control the power supply to the load. It is designed to provide reliable and efficient current to applications involving the starting, reversing, and integration of electric machines. The contactor is also protected by a fuse on the input side, further ensuring its reliability and long service life.

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