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ABB S203-D1NA MCB – S200 – 3P+N – D – 1A
ABB S203-D1NA three-pole plus switched neutral miniature circuit breaker with 1 A rated current, D curve tripping characteristic and 6 kA breaking capacity for industrial and commercial electrical installations.
£144.83
Why Choose the ABB S203-D1NA Miniature Circuit Breaker?
The ABB S203-D1NA is a premium three-pole plus switched neutral (3P+N) miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. Designed to provide dependable overload and short circuit protection, it is ideal for commercial, industrial and OEM electrical installations requiring reliable protection of three-phase circuits with a switched neutral.
Featuring a D curve tripping characteristic and a 1 A rated current, the S203-D1NA is particularly suitable for protecting circuits supplying transformers, motors, control equipment and other inductive loads with high inrush currents. Its current limiting design helps minimise fault energy, protecting connected equipment while maintaining system reliability.
Manufactured to ABB's exacting quality standards, the S203-D1NA offers excellent mechanical durability, dependable switching performance and compatibility with ABB's extensive range of modular accessories, making it an excellent solution for professional electrical panel builders and contractors.
Key Advantages
- Reliable 3P+N miniature circuit breaker for industrial and commercial applications.
- 1 A rated current with D curve tripping characteristic.
- 6 kA breaking capacity for dependable circuit protection.
- Protects against overloads and short circuits.
- Switched neutral provides additional installation flexibility.
- Compatible with ABB auxiliary contacts and signalling accessories.
Key Features
- ABB System pro M Compact S200 series.
- 1 A rated current.
- D characteristic trip curve.
- Three protected poles plus switched neutral (3P+N).
- 6 kA rated short circuit breaking capacity.
- DIN rail mounting.
- Thermal overload and magnetic short circuit protection.
- Failsafe bi-directional cylinder-lift terminals.
Reliable Protection for Three-Phase Electrical Systems
The ABB S203-D1NA combines thermal overload protection with rapid magnetic short circuit protection to safeguard electrical installations. Its D curve characteristic allows temporary high inrush currents without nuisance tripping, making it particularly suitable for motors, transformers and other inductive loads.
The integrated switched neutral makes this breaker ideal for applications requiring simultaneous switching of the neutral conductor while protecting the three live phases. Its compact modular design enables straightforward installation within modern electrical distribution boards and control panels.
Typical Applications
- Industrial control panels.
- Motor control circuits.
- Transformer protection.
- OEM machinery.
- Commercial electrical installations.
- Three-phase distribution systems with switched neutral.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Current | 1 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-D1NA | |
| Product ID | 2CDS253103R0011 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 1 A | |
| Tripping characteristic | D Curve | |
| Number of poles | 3P+N | |
| Protected poles | 3 | |
| Rated operational voltage | 400 V AC | |
| Maximum operating voltage | 440 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit breaking capacity | 6 kA | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 70 × 69 mm | |
| Weight | Approx. 0.50 kg | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
Frequently Asked Questions
What is the ABB S203-D1NA used for?
The ABB S203-D1NA protects three-phase electrical circuits with a switched neutral against overloads and short circuits in industrial and commercial applications.
What does the D curve characteristic mean?
A D curve miniature circuit breaker is designed for circuits with high inrush currents, making it suitable for motors, transformers and inductive loads.
What is the rated current of this circuit breaker?
The ABB S203-D1NA has a 1 A rated current.
What does 3P+N mean?
3P+N indicates three protected phase poles with an additional switched neutral pole, allowing the neutral conductor to be switched together with the phase conductors.
How is the ABB S203-D1NA installed?
The breaker is designed for standard DIN rail mounting inside electrical distribution boards and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted worldwide by electrical contractors, panel builders and industrial engineers for dependable circuit protection, excellent durability and consistent long-term performance.
