Contactors (Solid State)

DP4RSA60D60B application field and working principle

The DP4RSA60D60B is a solid-state contactor and it is mainly used in medium to large industrial, commercial and agricultural applications. It is also suitable for use in residential, industrial and agricultural applications. The contactor is equipped with three-phase and one-phase supply. Three-phase supply is used when the system needs a high current load and one-phase supply is used when a low current load is needed. This contactor also features an extended coil and contactor operation time. The DP4RSA60D60B operates on high voltage inputs. It is designed to provide a reliable on/off switching of a controlled load. It has three poles with two of them controlling switch operation and the third pole providing a holding circuit. The three-pole contactor has three contacts: a normally closed (NC) contact, a normally open (NO) contact and an auxiliary contact. The no contact is open when the contactor is de-energized and it closes when the contactor is energized. The NC contact is closed when the contactor is de-energized and it opens when the contactor is energized. The auxiliary contact closes when the contactor is energized and it opens when the contactor is de-energized. The DP4RSA60D60B also has a built-in safety feature. This ensures that the contacts are fully open or closed when the contactor is idle. The protection level is rated at IP 20. The working principle of the DP4RSA60D60B is based on the use of a magnetically operated relay. The relay is energized when AC voltage is applied to the coil. When this happens, the contacts close and the load is switched on. A trickle current is also maintained in the coil which keeps the contacts in a closed position when the voltage is removed.The DP4RSA60D60B is an economical and reliable contactor and it is commonly used in industrial, commercial and agricultural applications. Its built-in safety feature makes it an attractive choice for many applications. Its three-pole design is also useful in providing a reliable on/off switching of a controlled load when three-phase or one-phase supply is needed. The specific data is subject to PDF, and the above content is for reference