Schneider Electric's Square D LAP26400MB is a PowerPact molded‑case circuit breaker rated for 600V AC and 400A, configured as a two‑pole unit for high‑current distribution. It provides thermal‑magnetic overcurrent protection with a 22 kA interrupting capacity at 600V and a 250VDC rating, and it is a unit‑mount, short‑handle device for straightforward installation in compatible panels. In commercial and industrial electrical systems, it protects feeders and main distribution circuits where a 400‑amp breaker is required, commonly serving as a main or sub‑feed breaker within Square D PowerPact LA gear.
