Why Choose the ABB S203M-C20 Miniature Circuit Breaker?
The ABB S203M-C20 is a reliable 3-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in commercial, industrial and OEM installations. As part of the trusted ABB System pro M Compact S200M series, it provides compact, high-performance circuit protection for distribution boards, machinery panels and electrical control systems.
Featuring a Type C tripping characteristic, the S203M-C20 is suitable for circuits with moderate inrush currents, including motors, transformers, HVAC equipment, lighting circuits, automation systems and three-phase power distribution. Its thermal and magnetic trip mechanisms provide dependable protection while helping reduce unnecessary tripping during normal equipment start-up.
With a 20 A rated current, 3-pole configuration and 10 kA breaking capacity, the ABB S203M-C20 is ideal for professional electrical installations where reliable protection, ABB build quality and standards-compliant performance are required.
Key Advantages
- Reliable 3-pole miniature circuit breaker for industrial and commercial installations.
- 20 A rated current suitable for three-phase power and control circuits.
- Type C tripping characteristic for moderate inrush current applications.
- 10 kA breaking capacity for dependable short-circuit protection.
- Compact DIN rail mounting for quick panel installation.
- Compatible with ABB System pro M Compact modular accessories.
Key Features
- ABB System pro M Compact S200M series.
- 3-pole miniature circuit breaker.
- 20 A rated current.
- Type C tripping curve.
- 10 kA rated short-circuit breaking capacity.
- Delayed thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short-circuit protection.
- DIN rail mounted design for distribution boards and control panels.
Reliable Protection for Three-Phase Electrical Systems
The ABB S203M-C20 automatically disconnects electrical circuits when overload or short-circuit conditions occur. This helps protect cables, switchgear, control equipment and connected devices from damage caused by excessive current.
Its Type C characteristic makes it suitable for equipment that may draw a temporary inrush current during start-up. The 3-pole design provides simultaneous protection and disconnection across three conductors, making it a practical choice for industrial panels, machinery and commercial distribution systems.
Typical Applications
- Industrial control panels.
- Three-phase power distribution circuits.
- Automation and machine control systems.
- Motor and transformer circuits.
- HVAC and building services equipment.
- OEM machinery and electrical equipment.
