ABB S203P-K6NA System pro M compact S200P miniature circuit breaker with 3P+N configuration, 6 A rated current, K tripping characteristic and high breaking capacity for industrial and commercial circuit protection.
The ABB S203P-K6NA 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 installations.
This miniature circuit breaker features a K tripping characteristic and a 6 A rated current, making it suitable for circuits with higher inrush currents. It is particularly useful for inductive loads such as motors, transformers, solenoids and contactors where controlled tripping helps reduce nuisance operation during normal start-up conditions.
With a 3P+N configuration and a high 25 kA breaking capacity, the S203P-K6NA delivers professional-grade protection for demanding three-phase electrical systems. Its compact DIN rail mounted construction allows efficient installation in electrical panels, switchboards and machine control cabinets.
Miniature circuit breakers such as the ABB S203P-K6NA protect electrical installations by automatically disconnecting the circuit during overload or short circuit conditions. The thermal mechanism responds to sustained overloads, while the electromagnetic trip mechanism reacts rapidly to short circuit faults.
The K curve characteristic is designed for circuits where normal start-up currents may be higher than standard resistive loads. This makes the S203P-K6NA well suited to motors, transformers and industrial equipment where dependable protection and reduced nuisance tripping are both important.
| Current | 6 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-K6NA |
| Product type | Miniature Circuit Breaker (MCB) |
| Product ID | 2CDS283103R0377 |
| EAN | 4016779593304 |
| Rated current | 6 A |
| Tripping characteristic | K |
| Number of poles | 3P+N |
| Total poles | 4 |
| 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 |
| Width | 4 modular spacings |
| Built-in depth | 69 mm |
| 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-K6NA 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 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-K6NA is a 3P+N device with three protected poles and a switched neutral.
Yes. The S203P-K6NA 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 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...