ABB Protecta Plus S203M-B25 Miniature Circuit Breaker • 3 Pole • 25A Type B • 440V AC / 12V DC • 10kA Breaking Capacity • DIN Rail Mount • System pro M Compact • Industrial MCB • 2CDS273001R0255

• THREE-PHASE CIRCUIT PROTECTION – ABB S203M-B25 3-pole 25A miniature circuit breaker protects circuits from overload and short-circuit faults. Designed for DIN rail distribution boards and switchboards used in commercial and industrial installations.
• TYPE B TRIPPING CURVE – Type B tripping operates at 3–5× rated current, providing fast response to overloads and short circuits. Suitable for circuits with low inrush current such as lighting systems, heating equipment and general electrical loads.
• DIN RAIL INSTALLATION – Compact 3-pole breaker mounts on standard DIN rails in switchboards and electrical panels. Screw terminals secure conductors while the contact indicator allows quick visual status checks during operation or maintenance.
• 10KA BREAKING CAPACITY – Rated 10kA to interrupt high fault currents during overload or short circuit events. Thermal and magnetic trip mechanisms disconnect power quickly to help protect wiring, connected equipment and electrical 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-B25 Miniature Circuit Breaker provides reliable protection against overload and short-circuit faults in electrical installations. It belongs to the trusted ABB System pro M Compact S200M series, widely used in residential, commercial and industrial applications. This 3-pole 25A miniature circuit breaker features a Type B tripping characteristic, allowing quick response to overloads and short circuits in circuits with low inrush current such as lighting systems and standard electrical equipment. The breaker combines thermal overload protection and electromechanical short-circuit protection to ensure dependable operation. With a 10kA breaking capacity, it safely interrupts high fault currents and helps protect wiring, electrical equipment and distribution systems. The compact design enables quick DIN rail installation in switchboards and distribution panels. Secure screw terminals provide reliable wiring connections while the contact position indicator allows easy status checks during service. 3-pole miniature circuit breaker 25A rated current Type B tripping characteristic 10kA breaking capacity Rated voltage up to 440V AC / 12V DC DIN rail mounting design Reliable overload and short circuit protection Complies with IEC/EN 60898 standards