Why Choose the ABB S203-D32 Miniature Circuit Breaker?
The ABB S203-D32 is a robust three-pole miniature circuit breaker (MCB) designed to provide reliable protection against overloads and short circuits in commercial and industrial electrical installations. Part of the trusted ABB System pro M compact S200 series, it delivers dependable circuit protection while meeting internationally recognised safety standards.
Featuring both a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for rapid short-circuit interruption, the S203-D32 offers excellent protection for demanding electrical applications. Its D tripping characteristic makes it particularly suitable for circuits supplying equipment with high inrush currents, including motors, transformers and industrial machinery.
With a rated current of 32 A, a three-pole configuration and a 10 kA rated ultimate short-circuit breaking capacity at 400 V AC, the S203-D32 is ideal for protecting three-phase power distribution systems. Its compact DIN rail mounted design enables fast installation within switchboards, distribution boards and control panels.
Key Advantages
- Reliable overload and short-circuit protection for three-phase electrical systems.
- 32 A rated current for commercial and industrial power distribution.
- D-curve tripping characteristic for motors and inductive loads with high starting currents.
- 10 kA ultimate breaking capacity at 400 V AC.
- Current-limiting design helps minimise damage during fault conditions.
- Compact DIN rail mounting simplifies installation and maintenance.
Key Features
- ABB System pro M compact S200 series.
- Three-pole miniature circuit breaker.
- 32 A rated current.
- D tripping characteristic.
- 10 kA rated ultimate short-circuit breaking capacity (Icu).
- 7.5 kA rated service breaking capacity (Ics).
- Thermal overload and electromechanical short-circuit protection.
- Red ON and green OFF contact position indication.
- Compatible with ABB auxiliary contacts and accessories.
- Standard 35 mm DIN rail mounting.
Reliable Circuit Protection for Industrial Applications
The ABB S203-D32 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect wiring, equipment and personnel. Its current-limiting design significantly reduces the energy released during fault conditions, minimising damage to connected equipment.
Its D-curve characteristic is designed for applications where high transient starting currents are expected, making it an excellent choice for motors, transformers, compressors and other inductive electrical loads found in industrial automation and commercial installations.
Typical Applications
- Industrial motors and motor control circuits.
- Transformers and inductive loads.
- Machine tools and production equipment.
- Commercial electrical distribution boards.
- Industrial control panels.
- HVAC, pumps and compressor systems.
