Why Choose the ABB S203D10 Miniature Circuit Breaker?
The ABB S203D10 is a premium 3-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in demanding commercial and industrial electrical installations. Part of the renowned ABB System pro M Compact S200 series, it combines advanced thermal-magnetic protection with current-limiting technology and a compact DIN rail design for reliable circuit protection.
Featuring a D curve tripping characteristic, the S203D10 is specifically engineered for circuits with very high inrush currents. It is ideal for protecting motors, transformers, compressors, welding equipment, solenoids and other inductive loads that experience significant start-up currents without causing nuisance tripping.
With a rated current of 10 A, a 3-pole configuration and a 6 kA rated short-circuit breaking capacity, the ABB S203D10 provides reliable protection for three-phase systems operating up to 400 V AC. Its compatibility with ABB auxiliary accessories allows simple integration into switchgear, distribution boards and industrial control panels.
Key Advantages
- Reliable 3-pole miniature circuit breaker for overload and short-circuit protection.
- 10 A rated current for industrial three-phase circuits.
- D curve tripping characteristic for high inrush current applications.
- 6 kA breaking capacity provides dependable fault protection.
- Current-limiting technology helps minimise fault energy.
- Compatible with ABB S200 auxiliary accessories.
- Compact DIN rail mounting for quick installation.
Key Features
- ABB System pro M Compact S200 series.
- Model S203-D10.
- 10 A rated current.
- 3-pole configuration.
- D trip characteristic.
- 230/400 V AC rated operational voltage.
- 6 kA rated short-circuit breaking capacity.
- Thermal and electromagnetic tripping mechanisms.
- Current-limiting operation.
- Bottom-mounted auxiliary contact compatibility.
- Red/green contact position indication.
- DIN rail mounting.
Designed for High Inrush Current Applications
The ABB S203D10 automatically disconnects electrical circuits during overload and short-circuit conditions, helping protect wiring and connected equipment from damage. Its thermal-magnetic operating mechanism delivers dependable protection while minimising downtime in demanding industrial environments.
Its D curve characteristic allows the breaker to withstand high temporary starting currents, typically between 10 and 20 times the rated current before instantaneous tripping. This makes it particularly suitable for motors, transformers, compressors, welding equipment and other highly inductive loads.
Typical Applications
- Industrial control panels.
- Motor starters.
- Transformers.
- Compressors.
- Welding equipment.
- OEM machinery.
- Automation systems.
- Three-phase power distribution.
