The W388ACPSRX-4 is part of Struthers-Dunn's Advanced Solid State Relay (ASR) product line. This relay is a single-phase, 4-terminal, DC control relay with a current rating of 10A and a voltage rating of 380V. It features a snubberless, zero-crossing design that utilizes advanced IGBT technology and is ideal for on/off switching of AC loads. Additionally, the W388ACPSRX-4 offers easy installation and includes thermistor protection to help reduce power surges. This relay is UL, CUL, and TUV listed, making it suitable for applications in the US, Canada, and Europe.