ABB S203M-C63NA miniature circuit breaker featuring a 63 A rating, 3P+N configuration, C characteristic and 10 kA breaking capacity for industrial and commercial electrical protection.
£177.86
The ABB S203M-C63NA is a dependable miniature circuit breaker (MCB) from the proven ABB System pro M Compact S200M series, designed to provide reliable overload and short circuit protection for industrial, commercial and OEM electrical installations. Featuring a C characteristic trip curve, it is ideal for protecting general-purpose power circuits and equipment with moderate inrush currents.
The S200M range combines compact dimensions with outstanding performance, making installation simple whilst delivering excellent reliability. Its thermal and electromechanical tripping mechanisms provide dependable protection, helping to maximise equipment uptime and maintain electrical safety.
With a 63 A rated current, 3P+N configuration and a 10 kA breaking capacity, the S203M-C63NA is well suited to protecting three-phase distribution circuits, machinery and industrial control panels.
The ABB S203M-C63NA protects electrical circuits by automatically disconnecting the supply during overloads and short circuits. Its thermal tripping mechanism protects against sustained overload conditions, whilst the electromechanical mechanism reacts rapidly to fault currents.
The C curve characteristic is designed for general electrical distribution and equipment with moderate inrush currents, making it suitable for a wide range of industrial machinery, commercial installations and automation systems.
| Current | 63 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200M |
| Model | S203M-C63NA |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 63 A |
| Number of protected poles | 3 |
| Neutral pole | Switched neutral |
| Pole configuration | 3P+N |
| Trip characteristic | C |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 10 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Width | 4 modular spacings |
| Built-in depth | approx. 69 mm |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It provides overload and short circuit protection for three-phase electrical circuits in industrial, commercial and automation applications.
The C curve is intended for general-purpose electrical circuits and equipment with moderate starting currents, typically tripping between five and ten times the rated current.
The ABB S203M-C63NA has a rated current of 63 A.
The device includes three protected phase poles together with a switched neutral, making it suitable for three-phase installations requiring neutral isolation.
The miniature circuit breaker is designed for simple DIN rail mounting inside electrical distribution boards and industrial control panels.
ABB System pro M Compact miniature circuit breakers are trusted by electrical engineers, panel builders and machine manufacturers for delivering reliable protection across industrial and commercial 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...