ABB 1SNA645020R0100 Safety Relay Module 24V DC

ABB 1SNA645020R0100 is a R600 Series interface relay with a single SPDT (1CO) contact, designed for DIN-rail mounting in control panels. It uses a universal coil rated for 60–230 V AC/DC, allowing it to be driven from either AC or DC control sources. The contact rating supports up to 6 A at 250 VAC, providing a robust interface between low-voltage control logic and higher-voltage loads. The unit is delivered with screw-terminal connections and compact enclosure dimensions of about 70 mm in length, 12 mm in width, and 67.5 mm in height, enabling efficient installation in dense control cabinets. An integrated status LED offers immediate visual indication of the relay state for easier diagnostics. This single-channel interface relay is suited for signaling, PLC I/O interfacing, and safety-related control applications where reliable isolation and clear state indication are essential.