DRA3P48E2

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:	2.4A
Voltage - Input:	18 ~ 28VDC
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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1 IntroductionContactors (Solid State) are designed to control the switching on and off of an electrical system and are often used for controlling motors and other mission-critical equipment. The DRA3P48E2 Solid State Contactors are a type of devices that offer an energy-efficient and highly reliable alternative to mechanical contactors. This article looks at the application field and working principles of the DRA3P48E2 contactor.2 Application FieldThe DRA3P48E2 is suitable for controlling low power motors, as well as lighting, heating and air conditioning equipment. The contactor is also suitable for controlling electrical heaters, electric fans, pumps and exhaust fans.The contactor is suitable for controlling various AC and DC voltages up to 48V and can be used with devices operating on a single-phase or three-phase power supply.3 Working PrincipleThe DRA3P48E2 utilizes a triac based solid-state switch design, which makes it much more reliable than mechanical contactors. The triac is composed of two opposing thyristors connected between the main contacts and a control gate. When a control-gate voltage is applied, the thyristors turn on, causing current to flow between the main contacts, completing the switch circuit.When the control-gate voltage is reversed, the two thyristors turn off, allowing the switch to open. This simple, yet reliable, system is at the heart of all DRA3P48E2 Solid State Contactors.4 BenefitsThe DRA3P48E2 offers several advantages over mechanical contactors that make it an ideal choice for many applications. Firstly, the switch is completely enclosed, which eliminates the risk of physical contact with the electrical components. The contactor is also immune to vibration, which increases its reliability and reduces maintenance requirements.Secondly, the DRA3P48E2 has a much higher switching capability than mechanical contactors, enabling the switch to accommodate higher loads with less damage to the internal components.Lastly, the contactor design is much more energy-efficient than traditional mechanical contactors, as it does not require the continual flow of electricity to maintain the switch in an open or closed state. 5 ConclusionThe DRA3P48E2 contactor is a highly reliable and energy-efficient alternative to traditional mechanical contactors. The contactor is suitable for controlling a range of AC and DC voltages up to 48V and is ideal for controlling motors, lighting, heating and air conditioning equipment. The contactor offers several benefits over mechanical contactors, including increased reliability, immunity to vibration and a higher switching capability.

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