The ABB Tmax XT5H 400 MBM324WB is a high-quality circuit breaker designed for industrial use. With a maximum amperage of 400 A and voltage ranging from 551-600 V, this 3-phase breaker is suitable for interior applications. It features a switch control style and instantaneous break time, making it ideal for reliable protection in various electrical circuits. Built by the reputable brand ABB, this main breaker offers durability and efficiency in a compact design, making it a valuable addition to any electrical system.