ABB S203P-K1NA System pro M compact S200P miniature circuit breaker with 3P+N configuration, 1 A rated current, K tripping characteristic and high breaking capacity for industrial and commercial circuit protection.
The ABB S203P-K1NA is a high-performance 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200P series. Designed for reliable overload and short circuit protection, it provides dependable circuit protection for industrial control panels, machinery, commercial distribution boards and OEM electrical systems.
This miniature circuit breaker features a K tripping characteristic and a 1 A rated current, making it suitable for circuits where controlled protection is required alongside tolerance for higher inrush currents. Its current-limiting design helps reduce fault energy, protecting cables, switchgear and connected components during electrical fault conditions.
With a 3P+N configuration and a 25 kA breaking capacity, the S203P-K1NA is ideal for demanding three-phase applications requiring high-performance protection and switched neutral functionality. The compact DIN rail mounted format supports fast installation in electrical enclosures and distribution panels.
Miniature circuit breakers such as the ABB S203P-K1NA protect electrical installations by automatically disconnecting the circuit during overload or short circuit conditions. The delayed thermal trip mechanism responds to overloads, while the electromagnetic trip mechanism provides rapid protection against short circuit faults.
The ABB S200P range is designed for high-performance applications where dependable protection and compact panel integration are required. Its robust construction, high breaking capacity and accessory compatibility make it suitable for professional electrical distribution and automation environments.
| Current | 1 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-K1NA |
| Product type | Miniature Circuit Breaker (MCB) |
| Product ID | 2CDS283103R0217 |
| Rated current | 1 A |
| Tripping characteristic | K |
| Number of poles | 3P+N |
| Rated voltage | 400 V AC/DC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Breaking capacity | Up to 25 kA |
| Current limiting class | 3 |
| Pollution degree | 3 |
| Overvoltage category | III |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.56 kg |
The S203P-K1NA is used to protect three-phase electrical circuits against overloads and short circuits in industrial, commercial and OEM applications.
This miniature circuit breaker has a 1 A rated current.
A K curve MCB is designed for circuits with higher inrush currents, making it suitable for inductive loads, transformers, motors and control equipment where nuisance tripping must be reduced.
The S203P-K1NA is a 3P+N device with three protected poles and a switched neutral.
Yes. The S203P-K1NA is designed for standard DIN rail mounting inside electrical panels, distribution boards and machine control cabinets.
ABB System pro M compact miniature circuit breakers are widely used by panel builders, electrical contractors and industrial engineers for dependable circuit protection, high breaking capacity and long-term performance in demanding 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...