Why Choose the ABB S203M-D1NA Miniature Circuit Breaker?
The ABB S203M-D1NA is a high quality 3+NP miniature circuit breaker (MCB) designed for reliable overload and short circuit protection in residential, commercial and industrial electrical installations. As part of the proven ABB System pro M compact S200M series, it provides dependable circuit protection in a compact DIN rail mounted format.
This circuit breaker combines a delayed thermal tripping mechanism for overload protection with an electromechanical tripping mechanism for short circuit protection. Its D characteristic tripping curve is suitable for circuits with high inrush currents, making it ideal for transformers, motors, solenoids and other inductive loads.
With a 1 A rated current, 3+NP configuration and 10 kA short circuit capacity, the ABB S203M-D1NA provides robust protection for three-phase and neutral circuits. The switched neutral design supports safe isolation and reliable operation within control panels, distribution boards and automation systems.
Key Advantages
- Compact 3+NP miniature circuit breaker for low voltage installations.
- 1 A rated current for low current protection circuits.
- D characteristic tripping curve for circuits with high inrush currents.
- 10 kA short circuit capacity for dependable fault protection.
- Part of the trusted ABB System pro M compact S200M range.
- DIN rail mounting for quick installation inside electrical panels.
Key Features
- ABB S200M miniature circuit breaker series.
- 1 A rated current.
- 3+NP pole configuration.
- D characteristic tripping curve.
- 10 kA rated short circuit capacity.
- Delayed thermal overload protection.
- Electromechanical short circuit protection.
- Suitable for residential, commercial and industrial applications.
Reliable Circuit Protection for Low Voltage Installations
ABB System pro M compact S200M miniature circuit breakers are current limiting devices designed to protect electrical circuits from overload and short circuit conditions. They are widely used across residential, commercial and industrial applications where reliable low voltage protection is required.
The D curve characteristic of the S203M-D1NA provides a higher instantaneous trip threshold than B or C curve devices, making it suitable for circuits where short duration start-up currents are expected. This helps reduce nuisance tripping whilst maintaining effective protection under fault conditions.
Typical Applications
- Industrial control panels.
- Three-phase and neutral distribution boards.
- Automation and control circuits.
- Transformer protection circuits.
- Motor and solenoid circuits.
- Commercial and industrial low voltage installations.
