ABB SU201M-C0.5 DIN Rail Mount Safety Relay Module

ABB SU201M-C0.5 is a three-pole, DIN-rail-mounted miniature circuit breaker (MCB) designed to protect three‑phase circuits from overload and short circuits. The unit carries a 0.5 A rated current per pole and uses a C-curve trip characteristic, enabling moderate inrush tolerance for controlled start‑ups. Identified as UL489‑listed, the SU201M-C0.5 supports a short‑circuit breaking capacity up to 10 kA, making it suitable for compact distribution panels and industrial control cabinets where reliable fault isolation is required. The compact 35 mm DIN rail footprint allows easy snap‑in installation in standard enclosures, and ABB’s SU family is commonly used for motor protection, branch circuit protection, and general panel protection in low‑voltage AC networks. This model’s three‑pole configuration provides synchronized protection across all three phases, helping maintain system safety and electrical balance in multi‑phase circuits. With ABB’s reputation for industrial protection devices, SU201M-C0.5 offers a precise, low‑current protection option for shared‑control panels, machinery, and automation racks where space efficiency and dependable trip behavior matter.