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ABB S203-D25NA MCB – S200 – 3P+N – D – 25A
ABB S203-D25NA System pro M Compact miniature circuit breaker with 3P+N configuration, 25 A rated current, D tripping characteristic and 6 kA breaking capacity for industrial and commercial circuit protection.
£144.80
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.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 25 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200 | |
| Model | S203-D25NA | |
| Product ID | 2CDS253103R0251 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 25 A | |
| Tripping characteristic | D | |
| Number of poles | 3P+N | |
| Rated operational voltage | 400 V AC | |
| Rated insulation voltage | 440 V | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 6 kA | |
| Mounting type | DIN rail | |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
Frequently Asked Questions
What is the ABB S203-D25NA used for?
The ABB S203-D25NA protects three-phase electrical circuits with a neutral against overloads and short circuits in industrial and commercial installations.
What does the D trip characteristic mean?
The D characteristic is designed for circuits with high starting currents, making it suitable for motors, transformers and other inductive equipment.
What is the rated current of this breaker?
This miniature circuit breaker has a 25 A rated current.
How is the S203-D25NA installed?
The breaker is designed for installation on a standard 35 mm DIN rail inside switchboards and industrial control panels.
Can ABB accessories be fitted?
Yes. The S200 range supports auxiliary contacts, shunt trips, undervoltage releases and other compatible ABB accessories.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted by electrical contractors, panel builders and industrial engineers worldwide for reliable circuit protection, excellent build quality and long service life.
