Why Choose the ABB S203-D4 Miniature Circuit Breaker?
The ABB S203-D4 is a premium 3-pole miniature circuit breaker (MCB) engineered to provide dependable overload and short circuit protection for low voltage electrical installations. As part of the trusted ABB System pro M compact S200 series, it combines reliable performance, compact installation and compliance with international standards, making it ideal for residential, commercial and industrial applications.
Featuring a D curve tripping characteristic, the S203-D4 is specifically designed for circuits with high inrush currents, making it ideal for motors, transformers, solenoids and other inductive loads. Its modular construction enables straightforward installation on standard DIN rails whilst remaining fully compatible with ABB System pro M compact accessories.
With a 4 A rated current, 3-pole configuration and ABB's proven engineering, the S203-D4 provides dependable circuit protection whilst helping maximise electrical safety and minimise downtime.
Key Advantages
- High performance 3-pole miniature circuit breaker.
- 4 A rated current for specialised circuit protection.
- D curve characteristic for high inrush current applications.
- Suitable for residential, commercial and industrial installations.
- 6 kA breaking capacity to IEC 60898-1.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S200 series.
- 3-pole (3P) configuration.
- 4 A rated current.
- D characteristic tripping curve.
- Current limiting design.
- 35 mm DIN rail mounting.
- Failsafe bi-directional cylinder-lift screw terminals.
- Reliable overload and short circuit protection.
Reliable Protection for Electrical Installations
The ABB S203-D4 automatically disconnects electrical circuits during overload and short circuit conditions, helping protect connected equipment whilst maintaining system reliability. Its D curve characteristic is specifically designed for circuits with high inrush currents, making it particularly suitable for motors, transformers and other inductive equipment.
As part of ABB's System pro M compact range, the S200 series provides dependable protection, straightforward installation and proven long term reliability, making it a trusted choice for electrical contractors, panel builders and OEM manufacturers.
Typical Applications
- Motor circuits.
- Transformer protection.
- Industrial control panels.
- Machine building and OEM equipment.
- Commercial electrical installations.
- General power distribution.
