DRA3P48D4

Series:	DRA3P
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Circuit:	3PST-NO (3 Form A)
Output Type:	AC, Zero Cross
On-State Resistance (Max):	--
Load Current:	4.2A
Voltage - Input:	4 ~ 6VDC
Voltage - Load:	48 ~ 510 V
Mounting Type:	DIN Rail
Termination Style:	Screw Terminal
Package / Case:	Module
Supplier Device Package:	--
Relay Type:	Contactor

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Contactors (Solid State): DRA3P48D4 application field and working principle

Contactors are the most frequently used switching and control components in power distribution systems. They are widely used as switchgears, circuit breakers, and operation and control devices. Contactors consist of poles, fixed contacts and movable contacts, and they make use of electromagnetic force to open, close and reverse the circuit, helping to control the electrical system so as to achieve certain control purpose. Contactors also provide protection against the overload and short circuit. Solid-state contactors offer a higher return on investment, superior performance, and increased safety. The most common type is the DRA3P48D4 contactor, which is suitable for controlling motors, pumps, lighting and other large loads. DRA3P48D4 contactors use the advanced MOSFET (metal oxide semiconductor field effect transistors) technology to achieve very fast switching times with excellent dynamic characteristics. It is also highly reliable and low maintenance due to its solid-state construction.The DRA3P48D4 contactor uses two MOSFETs as main switching elements. The two MOSFETs are pre-biased for polarity, so that they will switch on or off when the voltage is applied. When the voltage is applied to the contactor, it produces a contact force that closes the circuit, creating a flow of current through the MOSFETs. When the voltage is again switched off, the contact force will be released, thereby breaking the circuit. This allows for efficient switching of large power loads. The DRA3P48D4 contactor also has a built-in current-sensing device. This device monitors the contactor’s temperature, current, and voltage in order to protect the contactor from overload and short circuit. This sensing device also helps to reduce power consumption and improve performance. In summary, the DRA3P48D4 contactor enables fast and reliable switching of electrical loads. Its fast switching times and built-in current sensing protection make it ideal for applications where high power-handling is required. It is also highly reliable and maintenance-free due to its solid-state design.

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