ABB FS403MK-C20/0.03

The ABB FS403MK-C20/0.03 is an automatic differential current switch designed for global industrial applications requiring reliable residual current detection and circuit protection. Distributed internationally, this device plays a critical role in ensuring electrical safety and system integrity.

Key Technical Features and Applications of FS403MK-C20/0.03

• Incorporates differential current detection with a rated residual current of 30 mA, enabling rapid identification of leakage currents to prevent electrical hazards in industrial environments.
• Features an automatic trip mechanism that enhances protection against earth faults and insulation failures, minimizing downtime in process automation installations.
• Compact design suited for integration within electrical panels where space optimization is essential without compromising protection capabilities.
• Rated for a 20 Ampere nominal current, supporting mid-range load protection in manufacturing and infrastructure power distribution systems.

This switch is particularly suited for ensuring personnel safety and equipment protection in industrial plants and commercial facilities where residual current monitoring is mandatory. It is also vital for safeguarding control circuits in automation systems against leakage faults.