ABB S203M-D25NA miniature circuit breaker from the System pro M compact S200M range featuring a 25 A rating, D curve tripping characteristic, 3+NP configuration and up to 10 kA breaking capacity for high inrush circuit protection.
£273.43
The ABB S203M-D25NA is a high performance miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in residential, commercial and industrial electrical installations. As part of the professional ABB System pro M compact S200M series, it offers current-limiting protection for distribution boards, switchboards and industrial control panels.
This miniature circuit breaker features a D curve tripping characteristic, making it suitable for circuits with high inrush currents such as transformers, motors, inductive loads and selected industrial equipment. Its thermal and electromechanical tripping mechanisms provide reliable protection against both overload and short-circuit conditions.
With a rated current of 25 A, a 3+NP pole configuration and a breaking capacity of up to 10 kA at 230 / 400 V AC, the S203M-D25NA is ideal for demanding three-phase circuit protection applications requiring neutral switching. Its compact DIN rail mounting design supports fast installation in modular electrical enclosures.
Miniature circuit breakers such as the ABB S203M-D25NA automatically disconnect electrical circuits during overload or short-circuit conditions. This helps protect cables, connected equipment and electrical infrastructure while supporting safe and compliant installation design.
The ABB S200M range is engineered for professional applications requiring compact dimensions, dependable operation and high breaking capacity. The D curve characteristic makes this model particularly suitable for inductive loads and electrical equipment with high starting currents.
| Current | 25 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-D25NA |
| Product type | Miniature circuit breaker |
| Product ID | 2CDS273103R0251 |
| EAN | 4016779663434 |
| Rated current | 25 A |
| Tripping characteristic | D curve |
| Pole configuration | 3+NP |
| Rated operational voltage | 230 / 400 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Rated breaking capacity | up to 10 kA |
| Protection rating | IP20 |
| Current limiting class | 3 |
| Mounting type | DIN rail mounting |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-D25NA is used to protect three-phase electrical circuits against overloads and short circuits, particularly where high inrush current loads are present.
This miniature circuit breaker has a rated current of 25 A.
A D curve MCB is designed for circuits with high inrush currents, making it suitable for motors, transformers and inductive loads.
The S203M-D25NA provides three protected phase poles together with a neutral pole, making it suitable for three-phase systems requiring neutral switching.
It is designed for DIN rail installation inside distribution boards, switchboards and electrical control panels.
ABB System pro M compact miniature circuit breakers are trusted by electricians, panel builders and industrial engineers for reliable protection, compact installation and long-term performance in demanding electrical systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...