ED24D3R

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Solid-state relays are sophisticated electronic devices that allow a relatively low-power electrical signal (such as a digital signal from a computer) to control a higher-power load, such as lights, valves, and heaters. The ED24D3R is a type of 5-piece, three-phase solid-state relay (SSR), designed for industrial applications and rated up to 200A@480VAC.

ED24D3R Application Field: The ED24D3R is especially useful in HVAC application, where it can be used for controlling pumps, boilers and fans. It’s also suitable for motor control, machine control, equipment control, power supplies, and in process control applications.

ED24D3R Working Principle: In its simplest form, the ED24D3R SSR consists of a pair of opposing semiconductor switches called thyristors. A thyristor is basically a controllable gate that only allows current to flow when activated. When the thyristor receives a signal, it switches on, and as long as the signal is maintained, current flows through the load. As soon as the signal is removed, the thyristor switches off, and the current is shut off.

The ED24D3R SSR works with zero cross, meaning that it detects when the AC voltage waveform crosses zero. As the waveform crosses zero in either direction, the positive output of the control circuit turns on, causing the thyristors to fire. This ensures that the current in the load always starts from zero, which helps reduce wear and tear on the motor due to starting current surges.

The ED24D3R SSR also includes built-in surge suppression circuitry, ensuring that the SSR is tolerant to electrical transients. This makes the ED24D3R suitable for both light- and heavy-duty applications. The device is also transient-free with fast turn-on/turn-off operation.

Other Features: In addition to the features described above, the ED24D3R SSR also offers a wide operating temperature range of -40°C to +80°C, as well as IP20-rated dust-resistant and water-proof enclosures. Additionally, advanced features such as green LED status indication and built-in protection against overload and short-circuit are also available.

Overall, the ED24D3R SSR is a reliable, high-performance SSR designed for industrial applications, offering superior performance and ease of use. Its wide range of applications and range of advanced features make it an ideal option for engineers, electricians, and DIY enthusiasts alike.

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