Why Choose the ABB S203MT-C20NA Miniature Circuit Breaker?
The ABB S203MT-C20NA is a specialist miniature circuit breaker (MCB) from the ABB System pro M Compact S200MT series, designed for traction, railway and demanding industrial electrical applications. Featuring a C characteristic trip curve, it provides dependable overload and short circuit protection for circuits with moderate inrush currents.
The S200MT range is engineered for transport environments where reliability, compact installation and electrical safety are essential. This MCB combines delayed thermal overload protection with electromechanical short circuit protection, helping protect electrical circuits in rolling stock, rail infrastructure and specialist industrial control panels.
With a rated current of 20 A, a 3P+N configuration and a 10 kA breaking capacity, the S203MT-C20NA is ideal for three-phase circuits requiring neutral switching in traction, railway and specialist industrial installations.
Key Advantages
- Specialist miniature circuit breaker designed for traction and railway applications.
- 20 A rated current for dependable circuit protection.
- C characteristic trip curve suitable for circuits with moderate inrush currents.
- 3P+N configuration with three protected poles and switched neutral.
- 10 kA breaking capacity for reliable short circuit protection.
- DIN rail mounting for fast installation within electrical panels and distribution boards.
Key Features
- ABB System pro M Compact S200MT series.
- 20 A rated current.
- C curve tripping characteristic.
- 3P+N pole configuration.
- 10 kA rated short circuit breaking capacity.
- Designed specifically for traction and railway environments.
- Thermal overload and electromechanical short circuit protection.
- Compatible with ABB System pro M Compact accessories.
Reliable Circuit Protection for Traction and Railway Systems
The ABB S203MT-C20NA automatically disconnects electrical circuits during overloads and short circuits. Its thermal tripping mechanism protects against prolonged overload conditions, while the electromechanical mechanism reacts rapidly to fault currents, helping reduce equipment damage and minimise downtime.
The S200MT series has been developed for railway and traction applications, making it suitable for rolling stock, transport infrastructure and industrial systems requiring reliable circuit protection and compact DIN rail installation.
Typical Applications
- Railway and traction electrical systems.
- Rolling stock distribution panels.
- Transport infrastructure equipment.
- Industrial control panels.
- Three-phase power distribution circuits.
- Electrical installations requiring neutral switching.
