ABB 1SNA645007R0100 Relay Module

ABB 1SNA645007R0100 (RB121A-115VAC/DC) is a DIN-rail‑mounted interface relay module with a single Form C (SPDT) contact configuration. The coil accepts 115 VAC or 115 V DC control signals, enabling direct interfacing from standard automation controllers. The output contacts are rated to switch up to 6 A at 230 VAC, supporting common loads in panel installations, instrumentation, and automation systems. As part of ABB's R600 family, this compact relay module is designed for quick plug‑on installation in DIN‑rail panels, providing isolation between control logic and higher‑power circuits. This specific variant delivers the RB121A‑115VAC/DC configuration, consolidating a robust relay mechanism into a small, panel‑friendly form factor suitable for industrial applications that require reliable form‑C switching and straightforward wiring in a dense control cabinet.