DRA3P48A4R2

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Solid state relays (SSRs) are a type of electrical switch that use semiconductor technology to control an electrical circuit. They are usually used to switch a large amount of current with low power control signals. The DRA3P48A4R2 solid state relay is an industry standard/mid-range model used for industrial, commercial, telecom and consumer applications. This article will discuss the application field and working principle of the DRA3P48A4R2 in detail.

The DRA3P48A4R2 has a voltage rating of 240-480 VAC, and can handle up to 20 Amps continuous of switched load. It has a maximum switching speed of 10A per millisecond and a maximum current rating of 30A. It can be used in applications such as lighting control, electrical appliance control, motor control and HVAC systems. Its compact design and lightweight construction enable it to be used in a variety of applications and can be easily installed in tight spaces.

The DRA3P48A4R2 uses a zero-crossing optically coupled solid state switch to control the on/off state of the connected circuit. This type of switch uses optical coupling to electrically isolate the control and load circuits. The load is switched on at zero crossing points, meaning that the current rises from zero to its normal value. This prevents the switch from arcing or sparking, which can cause permanent damage to the switch and to connected circuits.

The DRA3P48A4R2 has an LED indicator to show when the load current is on or off, as well as an LED that flashes when the relay is triggered. It also has an adjustable sensitivity feature that enables the user to choose the amount of current required to switch the relay on or off. This can be useful for applications that require precise control of the load.

In addition, the DRA3P48A4R2 includes a number of safety features such as over-temperature and overload protection. This helps protect the connected circuit from damage due to excessive current or heat. It also has an isolation resistance of 500 MOhms which means it can safely be used in higher voltage applications.

The DRA3P48A4R2 is a reliable, cost-effective solution for switching higher loads with precision and power that will work in many industrial, consumer and telecom applications. Its features ensure it will last for a long time, while its safety features reduce the risk of damage to connected devices and circuits. All of these features combine to make the DRA3P48A4R2 an ideal choice for many applications.

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