ABB S203M-B6NA miniature circuit breaker featuring a 3P+N configuration, 6 A rated current, Type B tripping characteristic and 10 kA breaking capacity for residential, commercial and industrial circuit protection applications.
£176.12
The ABB S203M-B6NA (Part Number 2CDS273103R0065) is a high-performance 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200M range. Designed for residential, commercial and industrial electrical installations, it provides reliable protection against overloads and short circuits.
This ABB miniature circuit breaker is current limiting and uses two separate tripping mechanisms: a delayed thermal trip for overload protection and an electromechanical trip for short circuit protection. Its compact DIN rail mounted format makes it suitable for distribution boards, switchgear assemblies and industrial control panels.
With a 6 A rated current, Type B tripping characteristic, 3P+N configuration and 10 kA breaking capacity, the S203M-B6NA is ideal for protecting three-phase circuits with low inrush currents, including lighting, control circuits and general electrical distribution applications.
The ABB S203M-B6NA protects electrical circuits by disconnecting the supply when overload or short circuit conditions occur. The delayed thermal mechanism responds to sustained overloads, while the electromechanical trip provides fast interruption under short circuit fault conditions.
Type B miniature circuit breakers are designed for circuits with low inrush currents. This makes the S203M-B6NA suitable for lighting circuits, control wiring, small loads and general electrical distribution where fast and predictable protection is required.
| Current | 6 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-B6NA |
| Part Number | 2CDS273103R0065 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 6 A |
| Tripping characteristic | Type B |
| Pole configuration | 3P+N |
| Rated operational voltage | 400 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 10 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.50 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| EAN | 4016779549745 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It is used to protect three-phase electrical circuits against overloads and short circuits, particularly where low inrush currents are expected.
The ABB S203M-B6NA has a 6 A rated current.
Type B MCBs are designed for circuits with low inrush currents, such as lighting, control circuits and general distribution applications.
This model has a 3P+N configuration, providing three protected poles with neutral switching.
It is designed for DIN rail mounting inside distribution boards, switchgear assemblies and industrial control panels.
ABB System pro M compact miniature circuit breakers are trusted by contractors, panel builders and industrial engineers worldwide for dependable protection, reliable operation and consistent installation quality.
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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...