Why Choose the ABB S203M-C20NA Miniature Circuit Breaker?
The ABB S203M-C20NA is a premium miniature circuit breaker (MCB) engineered to provide dependable overload and short-circuit protection for commercial, industrial and high-performance electrical installations. As part of the proven ABB System pro M compact S200M series, it delivers excellent reliability, high breaking capacity and long service life for demanding applications.
Featuring a C curve tripping characteristic, the S203M-C20NA is designed for general-purpose circuits with moderate inrush currents, making it ideal for lighting, socket outlets, distribution circuits and a wide range of industrial control equipment. Its current-limiting technology helps minimise fault energy, protecting connected equipment and reducing system downtime.
With a rated current of 20 A, a 3+NP pole configuration and a breaking capacity of up to 10 kA, the S203M-C20NA provides reliable protection for three-phase systems requiring a switched neutral. The compact DIN rail design allows quick installation within switchboards, panel boards and distribution cabinets.
Key Advantages
- Reliable ABB miniature circuit breaker for professional electrical protection.
- 20 A rated current suitable for a wide range of installations.
- C curve tripping characteristic for general-purpose circuits.
- 3+NP configuration for three-phase systems with neutral.
- High current-limiting performance improves equipment protection.
- Fast DIN rail installation with extensive ABB accessory compatibility.
Key Features
- ABB System pro M compact S200M series.
- 20 A rated current.
- C curve tripping characteristic.
- 3+NP pole configuration.
- 10 kA rated breaking capacity at 230 / 400 V AC.
- Thermal overload protection.
- Electromechanical short-circuit protection.
- Compact DIN rail mounting for modular electrical installations.
Reliable Circuit Protection for Modern Electrical Systems
Miniature circuit breakers such as the ABB S203M-C20NA automatically disconnect electrical circuits during overload or short-circuit conditions, helping to protect cables, equipment and connected devices from damage while improving electrical safety.
The ABB S200M range combines high breaking capacity with compact dimensions, making it suitable for use in commercial buildings, industrial facilities, machine control panels and OEM electrical equipment where dependable circuit protection is essential.
Typical Applications
- Commercial distribution boards.
- Industrial switchboards.
- Machine control panels.
- OEM electrical equipment.
- Building services installations.
- General three-phase power distribution.
