ABB S203P-K1.6NA System pro M compact miniature circuit breaker featuring a 3P+N configuration, 1.6 A rated current, K tripping characteristic and 25 kA breaking capacity for industrial and commercial circuit protection.
The ABB S203P-K1.6NA is a high-performance 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200P series. Designed to provide reliable overload and short circuit protection, it is ideal for industrial machinery, OEM equipment, commercial switchboards and electrical distribution systems where dependable circuit protection is essential.
Featuring a K tripping characteristic and a 1.6 A rated current, the S203P-K1.6NA is specifically designed for circuits with higher inrush currents, making it well suited to motors, transformers, contactors and inductive loads. Its advanced current-limiting design helps minimise fault energy, reducing stress on connected equipment and improving overall system reliability.
With a 3P+N configuration and a 25 kA breaking capacity, this compact DIN rail mounted circuit breaker delivers professional-grade protection for demanding three-phase installations. Compatibility with ABB's extensive range of accessories provides additional flexibility for modern control panels and electrical systems.
The ABB S203P-K1.6NA combines delayed thermal overload protection with rapid electromagnetic short circuit protection to safeguard electrical installations and connected equipment. Its current-limiting design reduces the energy released during fault conditions, improving system protection and helping extend equipment life.
The K tripping characteristic makes this miniature circuit breaker particularly suitable for inductive loads with higher starting currents, including motors, transformers, contactors and industrial control equipment. It is widely used in professional panel building and automation applications.
| Current | 1.6 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-K1.6NA |
| Product ID | 2CDS283103R0257 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 1.6 A |
| Tripping characteristic | K |
| Number of poles | 3P+N |
| Rated operational voltage | 400 V AC/DC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50 / 60 Hz |
| Ultimate short circuit breaking capacity (Icu) | 25 kA |
| Service breaking capacity (Ics) | 12.5 kA |
| Current limiting class | 3 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.56 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 |
The S203P-K1.6NA protects three-phase electrical circuits against overloads and short circuits in industrial, commercial and OEM applications.
This miniature circuit breaker has a 1.6 A rated current.
A K curve MCB is designed for circuits with higher inrush currents, making it suitable for motors, transformers, contactors and other inductive loads.
The S203P-K1.6NA is a 3P+N device with three protected poles and a switched neutral.
Yes. The S200P range is compatible with ABB auxiliary contacts, shunt trips, undervoltage releases, motor operators and other modular accessories.
ABB System pro M compact miniature circuit breakers are trusted by electrical contractors, panel builders and industrial engineers for delivering dependable protection, high fault performance and long-term reliability in demanding electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...