Overview
The LV438267 is a Schneider ComPact NSX400F DC molded case circuit breaker rated 400 A with a 36 kA breaking capacity at 750 V DC, built for DC distribution in a 3-pole fixed-mount package. Its TM-DC thermal-magnetic trip unit provides L (overload) and I (short-circuit) protection, and the breaker is certified to EN/IEC 60947 with CCC, EAC, and Marine approvals.
Selection and sizing
The 400 A trip unit at 40 °C and 36 kA breaking capacity at 750 V DC suit this breaker for main or feeder protection in DC distribution panels, with a 1000-cycle electrical life at rated load and 5000 mechanical cycles.