ABB Protecta Plus S203M-C40 Miniature Circuit Breaker • 3 Pole • 40A Type C • 440V AC / 125V DC • 10kA Breaking Capacity • DIN Rail Mount • System pro M Compact • Industrial MCB • 2CDS273001R0404

• THREE-PHASE CIRCUIT PROTECTION – ABB S203M-C40 3-pole 40A miniature circuit breaker protects electrical circuits from overload and short-circuit faults. Ideal for DIN rail distribution boards, control panels, switchboards and industrial power systems.
• TYPE C TRIPPING PERFORMANCE – Type C characteristic trips at 5–10× rated current, allowing moderate inrush currents from motors, compressors, pumps and lighting circuits without nuisance tripping in automation and machinery installations.
• EASY DIN RAIL INSTALLATION – Compact 3-pole breaker clips onto standard DIN rails in switchboards and distribution boards. Screw terminals provide secure wiring and compatibility with ABB System pro M Compact accessories and busbar systems.
• RELIABLE FAULT INTERRUPTION – 10kA breaking capacity safely interrupts high fault currents while thermal overload and magnetic short-circuit protection help protect wiring, equipment, electrical panels and industrial distribution systems.
• ABB PROTECTA PLUS SYSTEM – Part of the ABB Protecta Plus modular distribution system for indoor installations, offering high internal accessibility, removable internal modules for simplified wiring, insulated neutral and earth bars, and an expandable cabinet concept for flexible electrical distribution solutions.

ABB Protecta Plus S203M-C40 Miniature Circuit Breaker is a high-quality circuit protection device designed to safeguard electrical systems from overloads and short circuits. Part of the trusted ABB System pro M Compact S200M series, it is widely used in commercial, industrial and electrical distribution applications. This 3-pole 40A miniature circuit breaker features a Type C tripping characteristic, making it suitable for circuits with moderate inrush currents such as motors, compressors, pumps and lighting systems. The breaker incorporates thermal overload protection and electromechanical short-circuit protection, ensuring fast and reliable interruption of fault currents. With a 10kA breaking capacity, it provides dependable protection for wiring, machinery and electrical panels. The compact design allows quick DIN rail mounting in switchboards and distribution panels. Built with durable thermoplastic housing and finger-safe terminals, the breaker complies with IEC/EN 60898 standards and delivers long service life with up to 20,000 mechanical operations. 3-pole miniature circuit breaker 40A current rating Type C tripping characteristic 10kA short-circuit breaking capacity Rated voltage up to 440V AC / 125V DC DIN rail mount design Suitable for industrial and commercial power systems Compatible with ABB System pro M Compact accessories