ABB SU203M-C50 Industrial Safety Relay Module

ABB SU203M-C50 is a three-pole miniature circuit breaker from ABB’s S200M/SU200M protection family, rated for 50 A with a C-curve trip characteristic to respond to moderate inrush currents and provide reliable overcurrent protection for branch circuits. It carries UL 489 listing with a 10 kA breaking capacity and IEC 60947-2 rating of 15 kA, making it suitable for use in commercial and light-industrial distribution panels. This AC-circuit protective device guards against overload and short-circuit events, helping safeguard conductors and connected equipment in ABB panel boards and similar installations. The SU203M-C50 is designed to integrate with other S200M components for consistent protection across a panel, combining ABB’s standards with compact, reliable performance for distribution applications.