ABB SU202M-K0.5 Industrial Safety Relay Module

ABB SU202M-K0.5 is a compact two‑pole miniature circuit breaker from ABB Stotz S&J, designed for branch‑circuit protection with a rated current of 0.5 A and a K‑curve trip characteristic. It is rated for up to 440 V (AC or DC) and supports UL489 and IEC/EN 60947‑2 standards, offering a breaking capacity of 11.2 kA at 400 V (Icn) and 15 kA (Icu) depending on the standard, with two poles for simultaneous protection of both conductors. The device occupies two module units of width and mounts on standard DIN rails or in panel enclosures, with a mounting depth around 69 mm, IP20 enclosure protection, and an operating temperature range of −25 to 55 °C; termination accepts 0.75–25 mm² multi‑stranded or 0.75–35 mm² single‑conductor wires. Typical applications include protecting small control circuits, machine logic, and instrumentation feeders in industrial panels where precise 0.5 A protection and fast, reliable tripping are required; it is compatible with other SU200M family devices for modular panel protection.