Why Choose the ABB S203-D25NA Miniature Circuit Breaker?
The ABB S203-D25NA is a premium 3P+N miniature circuit breaker (MCB) from the renowned ABB System pro M Compact S200 series, engineered to provide dependable overload and short circuit protection for commercial, industrial and OEM electrical installations. Featuring a D tripping characteristic, this breaker is ideal for circuits with high inrush currents such as motors, transformers and other inductive equipment.
Designed with ABB's advanced thermal and electromagnetic tripping technology, the S203-D25NA delivers fast, reliable fault protection while offering excellent current limiting performance. Its compact DIN rail mounted design allows straightforward installation in switchboards, distribution boards and industrial control panels.
With a 25 A rated current, 3P+N configuration and a 6 kA breaking capacity, the ABB S203-D25NA is ideally suited for protecting three-phase electrical circuits where a switched neutral is required, providing dependable protection in demanding industrial environments.
Key Advantages
- 3P+N miniature circuit breaker for three-phase electrical systems.
- 25 A rated current suitable for industrial power distribution.
- D characteristic trip curve for high inrush current applications.
- 6 kA breaking capacity for reliable fault protection.
- Compact DIN rail mounting for simple installation.
- Compatible with ABB S200 series accessories for enhanced functionality.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-D25NA.
- Rated current: 25 A.
- 3P+N pole configuration.
- D tripping characteristic.
- 6 kA rated short circuit capacity.
- Thermal overload and electromagnetic short circuit protection.
- Current limiting design.
- DIN rail mounting.
Reliable Protection for Industrial Power Distribution
The ABB S203-D25NA automatically disconnects electrical circuits during overload and short circuit conditions, helping protect wiring, machinery and connected equipment from damage while maintaining electrical safety and system reliability.
Its D characteristic magnetic trip curve is specifically intended for circuits with high inrush currents, making it an excellent choice for motors, transformers, compressors, pumps and other industrial inductive loads.
Typical Applications
- Industrial motor circuits.
- Control panels and switchboards.
- Machine building and OEM equipment.
- Three-phase power distribution.
- Transformers and inductive loads.
- Commercial and industrial electrical installations.
