ABB 1SNA645012R2500 Interface Relay

ABB RB122G-24VUC Interface Relay, order code 1SNA645012R2500, is a DIN-rail mounted, screw-terminal interface relay in ABB’s R600 family that translates low-voltage control signals into higher-current switching for industrial equipment. It features two Form C (DPDT) contacts rated up to 8 A at 250 VAC, enabling independent control of two circuits from a single coil, with A1–A2 coil terminals supporting 24 V AC or DC. The coil draws about 0.48 W, offering compact energy efficiency for panel installations, and the module is designed for standard DIN-rail mounting with a compact footprint: about 12 mm wide, 70 mm deep, and 67.5 mm high, enclosed to IP20/NEMA 1. It operates across a wide temperature range from -40 to 80 C, accommodating industrial environments, and provides reliable isolation between the control side and the load side for safer, more maintainable control schemes.