CC4825W3VR

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Solid state relays (SSRs) have become increasingly popular alternatives to conventional mechanical relays due to their lower power consumption, greater reliability and longer life spans. The CC4825W3VR is one such SSR device, offering up to 30A of switching power and a wide range of applications in the industrial sector. This article will discuss the application fields and working principles of the CC4825W3VR.

Applications

The CC4825W3VR is a 3-pole solid state relay, designed for applications requiring a medium to high level of switching power. It is used primarily in motor control systems, process control systems, heating systems and HVAC applications. It features a wide input voltage range of 85 to 264VAC for AC control and 15 to 24 VDC for DC control, which allows it to be used in a wide variety of applications. The device also features an internal snubber circuit for up to 350 VAC. It is approved to standards EN 60950 and UL 508, making it suitable for use in industrial environments.

Working Principle

The working principle of a solid state relay is based on a thyristor, or SCR, which acts as a switch in the relay circuit. When the input voltage is applied to the contacts of the SCR, the thyristor turns on, allowing current to flow between the contacts and activate the relay. The thyristor is then held on, maintaining a connection between the input and output of the solid state relay.

The CC4825W3VR employs a single-phase thyristor switch to provide a maximum switching power of 30A. It has a zero voltage turn-on feature, which means that the contacts will remain open until the input voltage is applied. This ensures that the device is always off when the power is disconnected. The device has an inrush current level of 30A and an insulation voltage rating of 1,500VAC, providing optimal protection for the operating environment.

Conclusion

The CC4825W3VR is a versatile 3-pole solid state relay that is suitable for a wide range of industrial applications. Its wide input voltage range and snubber circuit make it suitable for high-voltage applications such as motor control systems and process control systems. The device features an insulation voltage rating of 1,500VAC and a maximum switching power of 30A, making it an ideal solution for industrial environments.

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