Weidmüller 8937990000 Solid State Relay

The Weidmüller 8937990000 Solid State Relay is a compact DIN-rail mounted, photo-coupled SSR designed for high-speed DC signal switching in PLC cabinets, automation panels, and process control systems. It uses a SPST-NO (1 Form A) contact configuration and accepts a 12–28 VDC control input to switch DC loads at 19.6–28.8 VDC, with a continuous load current of 50 mA and a max pulse load current of 0.6 A (20 ms). The device supports switching frequencies up to 530 kHz and an input frequency of 100 kHz, and it provides reverse polarity protection and varistor suppression, a green status LED, and IP20 protection. Mounting is TS35 DIN rail with screw-terminal connections, and the product measures 6.1 mm in width. The part is designed to interface and switch DC control signals within industrial automation and process control systems, making it suitable for PLC systems, packaging machinery, OEM equipment, robotic systems, and process automation panels that require fast, wear-free electronic switching and reliable isolation.