Crydom CKRD2420 Solid State Relay

Crydom CKRD2420 is a solid-state relay used to switch AC loads in control panels and automation circuits, offering a 240 VAC output and a maximum continuous current of 20 A, suitable for medium-duty mains applications where solid-state switching is preferred over mechanical relays. The input side accepts a DC control signal in the 4–32 VDC range, allowing a wide range of drivers and controllers—such as PLCs or microcontroller-based interfaces—to energize the AC side without exposing operators to high voltages. This configuration supports clean, quiet switching and fast response in automated systems, making the CKRD2420 a practical choice for embedded control projects and equipment panels that require reliable 240 VAC operation at up to 20 A. Key specifications to note are 240 VAC output, 20 A load current, and 4–32 VDC input control; this combination defines the product as a straightforward, compatible device for systems with these exact criteria.