Why Choose the ABB S203-D6NA Miniature Circuit Breaker?
The ABB S203-D6NA is a reliable miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the trusted ABB System pro M compact S200 series, it is suitable for residential, commercial and industrial installations where dependable circuit protection is required.
This MCB features a D curve tripping characteristic, making it suitable for circuits with high inrush currents such as transformers, motors, power supplies and inductive loads. Its current-limiting design helps reduce fault energy, improving safety and protecting connected equipment.
With a rated current of 6A and a 3P+N configuration, the S203-D6NA is ideal for three-phase circuits requiring neutral switching. Its compact DIN rail format enables straightforward installation in distribution boards, control panels and industrial electrical enclosures.
Key Advantages
- Reliable miniature circuit breaker for overload and short-circuit protection.
- 6A rated current for low-current three-phase circuits.
- D curve characteristic suitable for high inrush current applications.
- 3P+N configuration for three-phase circuits with neutral switching.
- Current-limiting performance helps reduce fault energy.
- Compact DIN rail design for distribution boards and control panels.
Key Features
- ABB System pro M compact S200 series.
- 6A rated operational current.
- D curve tripping characteristic.
- 3 protected poles plus neutral.
- 6kA breaking capacity according to EN 60898.
- Thermal-magnetic trip mechanism.
- DIN rail mounting for modular electrical panels.
- Suitable for residential, commercial and industrial electrical systems.
Miniature circuit breakers such as the ABB S203-D6NA automatically disconnect electrical circuits when overloads or short circuits occur. This helps protect cables, connected devices and electrical installations from damage caused by excessive current.
The D curve characteristic is designed for circuits where short-duration starting currents are expected. This makes the S203-D6NA particularly suitable for inductive loads and equipment that may experience higher inrush during start-up.
Typical Applications
- Three-phase electrical distribution boards.
- Industrial control panels.
- Transformer and power supply circuits.
- Motor and inductive load protection.
- Machinery and automation panels.
- Commercial and industrial electrical installations.
