ABB S203MT-C63NA 3P+N 63 A C curve miniature circuit breaker with 10 kA breaking capacity for railway, traction, industrial and commercial electrical protection.
£224.83
The ABB S203MT-C63NA is a dependable 3P+N miniature circuit breaker (MCB) designed for railway, traction, rolling stock and demanding industrial electrical installations. Part of the specialist ABB S200MT miniature circuit breaker range, it provides reliable protection against overloads and short circuits in critical low voltage circuits.
Featuring a C tripping characteristic, the S203MT-C63NA is suitable for general electrical distribution and circuits with moderate inrush currents. Its current limiting construction helps reduce fault energy, protecting cables, equipment and connected devices during short circuit conditions.
With a rated current of 63 A, a 3P+N configuration and a 10 kA breaking capacity, this ABB miniature circuit breaker is ideal for three-phase systems with neutral switching. The compact DIN rail mounted design enables efficient installation within electrical distribution boards, switchgear assemblies and industrial control panels.
The ABB S203MT-C63NA combines delayed thermal overload protection with electromechanical magnetic short circuit protection. This provides dependable disconnection under fault conditions while helping protect electrical equipment and maintain reliable circuit operation.
The S200MT range has been developed especially for traction and railway applications, offering robust construction, compact installation and compatibility with ABB System pro M Compact accessories for flexible panel design.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-C63NA |
| Product ID | 2CDS273446R0634 |
| EAN | 4016779124317 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 63 A |
| Tripping characteristic | C |
| Number of poles | 3P+N |
| Protected poles | 3 |
| Breaking capacity | 10 kA |
| Rated voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects three-phase electrical circuits with neutral switching against overloads and short circuits in railway, traction, industrial and commercial installations.
The C characteristic is suitable for general distribution circuits and loads with moderate inrush currents, such as lighting, control panels and small inductive loads.
The ABB S203MT-C63NA has a rated current of 63 A.
This model has a 3P+N configuration with three protected poles and a switched neutral.
The circuit breaker is designed for DIN rail mounting inside electrical control panels, distribution boards and switchgear assemblies.
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial electrical professionals for dependable circuit protection, compact installation and compliance with recognised international standards.
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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...