Why Choose the ABB S203MT-C40NA Miniature Circuit Breaker?
The ABB S203MT-C40NA is a high-performance 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200MT series. Developed specifically for traction, railway and demanding industrial applications, it delivers dependable protection against overloads and short circuits while providing long-term reliability in harsh operating environments.
The S200MT range incorporates ABB's advanced current-limiting technology with both a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short-circuit protection. Certified to IEC/EN 60898-1 and IEC/EN 60947-2, the range also complies with NF F 16-101/102 Exigence 3, allowing installation throughout railway vehicles as well as industrial electrical systems.
With a 40 A rated current, C curve tripping characteristic, 3P+N configuration and 10 kA breaking capacity, the S203MT-C40NA is ideal for protecting three-phase distribution systems, machinery, industrial control panels and railway electrical equipment requiring reliable neutral switching.
Key Advantages
- Compact 3P+N miniature circuit breaker for railway and industrial applications.
- 40 A rated current for demanding electrical installations.
- C curve tripping characteristic suitable for moderate inrush current loads.
- 10 kA rated short-circuit breaking capacity.
- Current-limiting design helps minimise fault energy.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S200MT series.
- Product ID: 2CDS273106R0404.
- Model: S203MT-C40NA.
- Rated current: 40 A.
- C curve tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- Thermal overload and electromechanical short-circuit protection.
- DIN rail mounting with failsafe screw terminals.
Reliable Protection for Railway and Industrial Systems
Miniature circuit breakers automatically disconnect electrical circuits when overloads or short circuits occur, protecting wiring and connected equipment from damage. The ABB S203MT-C40NA combines thermal and magnetic tripping technologies to provide dependable protection for demanding railway and industrial electrical systems.
The S200MT series offers high mechanical endurance, compact installation and compatibility with the complete ABB System pro M compact accessory range. It is well suited to new installations and retrofit projects where reliable circuit protection is essential.
Typical Applications
- Railway rolling stock.
- Industrial control panels.
- Three-phase power distribution.
- OEM machinery.
- Automation systems.
- Commercial electrical installations.
