Why Choose the ABB S203M-D0.5NA Miniature Circuit Breaker?
The ABB S203M-D0.5NA is a high performance miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200M series, engineered to provide dependable overload and short circuit protection for industrial, commercial and specialist electrical installations. Featuring a D characteristic trip curve, it is particularly suitable for circuits with high inrush currents.
The S200M range incorporates both delayed thermal overload protection and fast electromechanical short circuit protection. Its current limiting design helps reduce fault energy, protecting valuable electrical equipment whilst improving overall system reliability.
With a rated current of 0.5 A, a 3P+N configuration and a 10 kA breaking capacity, the S203M-D0.5NA is ideal for protecting low-current three-phase control circuits, automation equipment and specialist machinery requiring neutral switching.
Key Advantages
- High quality miniature circuit breaker for precision circuit protection.
- 0.5 A rated current for low-current industrial applications.
- D characteristic trip curve designed for circuits with higher 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 quick installation in control panels and distribution boards.
Key Features
- ABB System pro M Compact S200M series.
- 0.5 A rated current.
- D curve tripping characteristic.
- 3P+N pole configuration.
- 10 kA rated short circuit breaking capacity.
- Thermal overload and electromechanical short circuit protection.
- Current limiting design.
- Compatible with ABB auxiliary contacts and signalling accessories.
Reliable Protection for Specialist Low-Current Circuits
The ABB S203M-D0.5NA automatically disconnects electrical circuits when overloads or short circuits occur. Its thermal tripping mechanism protects against prolonged overload conditions, while the electromechanical trip responds rapidly to fault currents, helping safeguard sensitive electrical equipment.
The D curve characteristic makes this miniature circuit breaker suitable for low-current circuits with higher inrush currents, including control transformers, automation equipment and specialist industrial applications requiring dependable protection.
Typical Applications
- Industrial control panels.
- Automation and PLC systems.
- Control transformer protection.
- Instrumentation circuits.
- OEM machinery.
- Low-current three-phase installations.
