Why Choose the ABB S203C3 Miniature Circuit Breaker?
The ABB S203C3 is a premium 3-pole miniature circuit breaker (MCB) engineered to provide reliable 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 dependable thermal-magnetic protection with a compact design and long service life.
Featuring a C curve tripping characteristic, the S203C3 is ideal for circuits with moderate inrush currents, making it suitable for control equipment, transformers, small motors, power supplies, HVAC systems and general-purpose industrial applications. Its current-limiting construction helps reduce fault energy while providing rapid disconnection during short-circuit conditions.
With a rated current of 3 A, a 3-pole configuration and a 6 kA short-circuit breaking capacity, the ABB S203C3 is designed for three-phase electrical systems operating at up to 400 V AC. Its compact DIN rail mounting format enables fast installation into distribution boards, switchgear and industrial control panels.
Key Advantages
- Reliable 3-pole miniature circuit breaker for overload and short-circuit protection.
- 3 A rated current for low-current three-phase applications.
- C curve tripping characteristic suitable for moderate inrush current loads.
- 6 kA breaking capacity for dependable fault protection.
- Current-limiting technology helps minimise fault energy.
- Compact DIN rail mounting for quick installation.
Key Features
- ABB System pro M Compact S200 series.
- Model S203-C3.
- 3 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 Low-Current Three-Phase Systems
The ABB S203C3 automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping to protect wiring, switchgear and connected equipment from electrical damage. Its thermal-magnetic mechanism delivers dependable protection whilst reducing downtime and improving installation safety.
Its C curve characteristic makes the breaker particularly suitable for small motors, transformers, industrial control systems, automation equipment and other circuits where moderate temporary inrush currents are expected.
Typical Applications
- Industrial control panels.
- Automation systems.
- Small motors and transformers.
- Power supplies.
- Commercial distribution boards.
- OEM machinery.
- HVAC control circuits.
