Why Choose the ABB S203C25 Miniature Circuit Breaker?
The ABB S203C25 is a high-quality 3-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in residential, commercial and industrial electrical installations. As part of the proven ABB System pro M Compact S200 series, it combines reliable thermal-magnetic protection with robust construction and long-term operational performance.
Featuring a C curve tripping characteristic, the S203C25 is ideal for circuits with moderate inrush currents, making it suitable for motors, pumps, compressors, HVAC equipment and general-purpose industrial power distribution. The breaker incorporates current-limiting technology to minimise fault energy and improve system safety.
With a rated current of 25 A, a 3-pole configuration and a 6 kA short-circuit breaking capacity, the ABB S203C25 is designed for three-phase systems operating at up to 400 V AC. Its compact DIN rail mounting design allows quick installation into distribution boards, switchgear assemblies and industrial control panels.
Key Advantages
- Reliable 3-pole miniature circuit breaker for overload and short-circuit protection.
- 25 A rated current suitable for commercial and industrial applications.
- C curve tripping characteristic for circuits with moderate inrush currents.
- 6 kA breaking capacity for dependable fault protection.
- Current-limiting design helps reduce fault energy.
- Compact DIN rail mounting for fast installation.
Key Features
- ABB System pro M Compact S200 series.
- Model S203-C25.
- 25 A rated current.
- 3-pole configuration.
- C trip characteristic.
- 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.
- Clear red/green contact position indication.
- DIN rail mounting.
Reliable Protection for Three-Phase Electrical Systems
The ABB S203C25 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect wiring, switchgear and connected equipment from electrical faults. Its thermal-magnetic operating mechanism delivers dependable long-term protection whilst reducing downtime.
The C curve characteristic makes the breaker particularly suitable for circuits supplying motors, pumps, compressors, HVAC systems and other inductive loads with moderate starting currents. The current-limiting design further reduces stress on electrical installations during fault conditions.
Typical Applications
- Industrial control panels.
- Three-phase electrical distribution boards.
- Motor and pump protection.
- HVAC installations.
- Commercial buildings.
- OEM machinery and automation equipment.
- General industrial power distribution.
