
The ABB S203MT-D63NA is a current limiting miniature circuit breaker designed for 3+N configurations, with a rated current of 63A. It features two tripping mechanisms: delayed thermal for overload protection and electromechanical for short circuit protection. Compliant with IEC/EN 60898-1 and IEC/EN 60947-2, this MCB is suitable for residential, commercial, and industrial applications, ensuring reliable and efficient electrical safety.
Detailed engineering parameters based on manufacturer documentation