Why Choose the ABB S203C100 Miniature Circuit Breaker?
The ABB S203C100 is a high-performance 3-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in commercial, industrial and heavy-duty electrical installations. As part of the trusted ABB System pro M Compact S200 80-100A series, it combines robust construction with reliable thermal-magnetic protection for demanding power distribution applications.
Featuring a C curve tripping characteristic, the S203C100 is ideal for circuits with moderate inrush currents, making it suitable for motors, pumps, compressors, HVAC equipment and general industrial power distribution. Its current-limiting design helps minimise fault energy while ensuring fast and reliable protection during overload and short-circuit conditions.
With a rated current of 100 A, a 3-pole configuration and a 6 kA short-circuit breaking capacity, the ABB S203C100 is designed for three-phase systems operating up to 400 V AC. Its DIN rail mounting format allows straightforward installation within distribution boards, switchgear assemblies and industrial control panels.
Key Advantages
- Reliable 3-pole miniature circuit breaker for overload and short-circuit protection.
- 100 A rated current for high-current electrical distribution.
- C curve tripping characteristic suitable for moderate inrush current applications.
- 6 kA breaking capacity for dependable fault protection.
- Current-limiting design reduces fault energy.
- Compact DIN rail mounting simplifies installation.
Key Features
- ABB System pro M Compact S200 80-100A series.
- Model S203-C100.
- 100 A rated current.
- 3-pole configuration.
- C trip characteristic.
- 400 V AC rated operational voltage.
- 6 kA short-circuit breaking capacity.
- Thermal and electromagnetic tripping mechanisms.
- Current-limiting operation.
- DIN rail mounting.
- Designed to IEC/EN 60898-1 and IEC/EN 60947-2 standards.
Reliable Protection for High-Current Three-Phase Systems
The ABB S203C100 automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping protect wiring, switchgear and connected equipment from electrical faults. Its thermal-magnetic mechanism ensures dependable operation while reducing downtime and improving system safety.
The C curve characteristic makes the breaker ideal for applications with moderate starting currents, making it well suited to industrial motors, HVAC equipment, commercial distribution systems and OEM machinery.
Typical Applications
- Industrial electrical distribution boards.
- Three-phase power distribution systems.
- Motor control circuits.
- HVAC installations.
- Commercial buildings.
- OEM machinery and automation equipment.
- Industrial switchgear assemblies.
