ABB S803UE-K20 Industrial Safety Relay Module

ABB S803UE-K20 is a three-pole, high‑performance miniature circuit breaker (MCB) from ABB’s System Pro M Compact lineup, designed to protect three‑phase feeders and motor circuits in industrial control panels. It is rated at 20 A and features a K‑curve trip characteristic, providing fast interruption of overcurrent conditions while maintaining a compact, modular protection solution for demanding environments. The unit occupies three module units in width (3 TE) and uses cage‑terminal connections for secure, straightforward terminations in field installations. As part of the S803UE/S803U family, the S803UE-K20 is commonly specified for industrial distribution boards where reliable overcurrent protection across all three phases is required, such as motor drives, pumps, conveyors, and other three‑phase loads. Built to ABB’s engineering standards, it offers clear labeling and robust performance in industrial settings, delivering protection without introducing additional wiring complexity in the panel layout.