Why Choose the ABB S203D50 Miniature Circuit Breaker?
The ABB S203D50 is a high performance three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. Designed to provide dependable protection against overloads and short circuits, it is ideal for industrial machinery, motor circuits and commercial electrical installations where high inrush currents are present.
Featuring a D tripping characteristic, the S203D50 is specifically intended for applications with high starting currents, including motors, transformers, compressors and inductive loads. Its precision thermal and magnetic trip mechanisms provide rapid fault isolation while minimising nuisance tripping during normal equipment start-up.
With a 50 A rated current, three protected poles and a 6 kA breaking capacity, the ABB S203D50 delivers reliable protection, simple DIN rail installation and full compatibility with ABB System pro M Compact accessories for modern distribution systems.
Key Advantages
- Premium three-pole miniature circuit breaker.
- 50 A rated current with D tripping characteristic.
- Designed for motors, transformers and high inrush current equipment.
- 6 kA rated breaking capacity.
- Thermal overload and magnetic short circuit protection.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S200 series.
- 50 A rated current.
- D tripping characteristic.
- Three-pole (3P) configuration.
- 6 kA rated short circuit breaking capacity.
- Current limiting construction.
- DIN rail mounting.
- Failsafe bi-directional cylinder-lift screw terminals.
Reliable Protection for High Inrush Current Applications
The ABB S203D50 automatically disconnects electrical circuits when overload or short circuit conditions occur, helping to protect equipment, reduce downtime and improve installation safety. Its D characteristic makes it particularly suitable for circuits supplying equipment with substantial starting currents.
Manufactured to comply with IEC/EN 60898-1, IEC/EN 60947-2 and UL1077, the S203D50 offers long mechanical life, excellent electrical endurance and dependable operation in demanding industrial environments.
Typical Applications
- Industrial motors.
- Motor control centres.
- Transformers.
- Compressors.
- Industrial machinery.
- Commercial and industrial distribution boards.
