Why Choose the ABB S203C63 Miniature Circuit Breaker?
The ABB S203C63 is a premium 3-pole miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in residential, commercial and industrial electrical installations. As part of the trusted ABB System pro M Compact S200 series, it combines reliable thermal-magnetic protection with current-limiting technology and a compact DIN rail design for modern electrical distribution systems.
Featuring a C curve tripping characteristic, the S203C63 is ideal for circuits with moderate inrush currents, making it suitable for motors, compressors, pumps, HVAC equipment, transformers and general three-phase power distribution. Its thermal overload mechanism and electromagnetic short-circuit protection ensure rapid fault clearance whilst helping to protect cables and connected equipment.
With a rated current of 63 A, a 3-pole configuration and a 6 kA rated short-circuit breaking capacity, the ABB S203C63 is designed for three-phase systems operating at up to 400 V AC. Compatibility with ABB auxiliary accessories and its compact DIN rail format simplify installation and future expansion.
Key Advantages
- Reliable 3-pole miniature circuit breaker for overload and short-circuit protection.
- 63 A rated current for high-capacity commercial and industrial distribution.
- C curve tripping characteristic suitable for circuits with moderate inrush currents.
- 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-C63.
- 63 A rated current.
- 3-pole configuration.
- C 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.
- Clear red/green contact position indication.
- DIN rail mounting.
Reliable Protection for High-Capacity Three-Phase Systems
The ABB S203C63 automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping protect wiring, switchgear and connected equipment from electrical damage. Its thermal-magnetic operating mechanism delivers dependable protection whilst reducing downtime and improving installation safety.
Its C curve characteristic makes the breaker particularly suitable for motors, compressors, pumps, HVAC equipment, industrial machinery and commercial distribution systems where moderate temporary starting currents are expected. The current-limiting design helps reduce thermal and mechanical stress during fault conditions.
Typical Applications
- Industrial distribution boards.
- Commercial electrical installations.
- Motor and pump circuits.
- HVAC systems.
- Industrial control panels.
- OEM machinery.
- Automation systems.
- Three-phase power distribution.
