Why Choose the ABB S203-D6 Miniature Circuit Breaker?
The ABB S203-D6 is a dependable three-pole miniature circuit breaker (MCB) engineered to provide reliable protection against overloads and short circuits in commercial, industrial and OEM electrical installations. As part of the renowned ABB System pro M compact S200 series, it combines robust performance with compact dimensions for modern electrical distribution systems.
Designed with both a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for rapid short-circuit interruption, the S203-D6 delivers dependable circuit protection in demanding applications. Its D tripping characteristic makes it particularly suitable for protecting circuits with high inrush currents, including electric motors, transformers, solenoids and other inductive loads.
With a rated current of 6 A, a three-pole configuration and a rated short-circuit capacity of 6 kA at 400 V AC, the ABB S203-D6 is ideal for safeguarding three-phase circuits. Its compact modular construction enables quick installation on standard DIN rails within electrical panels and switchboards.
Key Advantages
- Reliable overload and short-circuit protection for three-phase circuits.
- 6 A rated current suitable for low-current industrial and commercial applications.
- D-curve tripping characteristic for equipment with high starting currents.
- 6 kA rated short-circuit breaking capacity.
- Compact modular DIN rail mounting simplifies installation.
- Compatible with ABB auxiliary contacts and accessories.
Key Features
- ABB System pro M compact S200 series.
- Three-pole miniature circuit breaker.
- 6 A rated current.
- D tripping characteristic.
- 400 V AC rated operational voltage.
- 6 kA rated short-circuit capacity (IEC 60898-1).
- Current-limiting design.
- Thermal overload and electromechanical short-circuit protection.
- Bottom-mounted auxiliary contact compatibility.
- Standard 35 mm DIN rail mounting.
Reliable Circuit Protection for Inductive Loads
The ABB S203-D6 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect wiring, equipment and personnel. Its current-limiting design reduces fault energy, helping minimise damage to connected electrical systems.
Its D-curve characteristic makes it especially suitable for protecting circuits supplying motors, transformers, magnetic contactors and other equipment that experiences high transient inrush currents during start-up.
Typical Applications
- Industrial motor control circuits.
- Transformer protection.
- Automation and control panels.
- Machine building and OEM equipment.
- Commercial electrical distribution boards.
- Pumps, compressors and inductive loads.
