Why Choose the ABB S203MT-K13 Miniature Circuit Breaker?
The ABB S203MT-K13 is a specialist 3-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical installations. Part of the ABB S200MT range, it is developed for traction, railway and industrial applications where robust modular circuit protection is essential.
With a K tripping characteristic, the S203MT-K13 is suitable for circuits with higher inrush currents, helping reduce nuisance tripping while maintaining dependable protection. This makes it a practical choice for selected motor circuits, transformers, inductive loads and industrial control systems.
Rated at 13 A with a 3-pole configuration and 10 kA short-circuit breaking capacity, the ABB S203MT-K13 provides effective three-phase protection in a compact DIN rail format. Its current-limiting design helps reduce fault energy and supports safe operation in demanding transport and industrial environments.
Key Advantages
- 3-pole miniature circuit breaker for three-phase circuit protection.
- 13 A rated current suitable for control, power and auxiliary circuits.
- K curve tripping characteristic for circuits with higher inrush currents.
- 10 kA breaking capacity for demanding electrical installations.
- Designed for traction, railway and industrial applications.
- DIN rail mounting for efficient panel and distribution board installation.
Key Features
- ABB S203MT-K13 miniature circuit breaker.
- S200MT series modular protection device.
- 3 protected poles.
- 13 A rated current.
- K characteristic trip curve.
- 10 kA rated short-circuit capacity.
- Thermal-magnetic tripping for overload and short-circuit protection.
- Compact DIN rail mounting for electrical panels and switchboards.
Reliable Protection for High Inrush Three-Phase Circuits
Miniature circuit breakers such as the ABB S203MT-K13 automatically disconnect electrical circuits when excessive current is detected. The thermal tripping mechanism provides overload protection, while the electromechanical tripping mechanism reacts quickly to short-circuit faults.
The K curve characteristic is designed for applications where temporary inrush currents may occur during normal operation. This makes the S203MT-K13 suitable for selected inductive loads, transformers, motor circuits and automation equipment requiring dependable three-phase protection.
Typical Applications
- Railway and traction electrical systems.
- Three-phase control circuits.
- Industrial automation panels.
- Motor, transformer and inductive load protection.
- Machine building and OEM electrical equipment.
- Commercial and industrial low-voltage installations.
