ABB FS403MK-B20/0.03

The ABB FS403MK-B20/0.03 is an automatic differential current circuit breaker designed for global industrial applications, serving a critical role in electrical safety and fault protection.

Key Technical Features and Applications of FS403MK-B20/0.03

• Differential current monitoring enables rapid detection and interruption of earth faults, enhancing personnel and equipment safety in complex electrical installations.
• Rated for 20 A with a residual current sensitivity of 30 mA, allowing precise leakage current detection suitable for low-voltage distribution networks.
• Compact modular design facilitates integration into existing control panels and switchgear assemblies without extensive space requirements.
• Reliable trip mechanism supports preventative maintenance by minimizing nuisance tripping while ensuring compliance with electrical safety standards.

This circuit breaker is essential in protecting industrial machinery and residential electrical systems from insulation failures and current leakages, particularly in environments where electrical safety and continuity are paramount.