Schneider Electric LL-6151 Three-Phase Circuit Breaker

Schneider Electric’s Square D LL-6151 is a three-phase, 3-pole circuit breaker rated for 600 VAC and 250 VDC, identified as Type FAI. This LL-6151 model interrupts all three phases in a three-phase circuit to protect downstream equipment from overload and short circuits. Designed for industrial power distribution, it complements Schneider Electric’s panel and enclosure ecosystems that accept LL-series breakers. In practice, a three-pole unit provides simultaneous interruption of all live lines, helping to limit fault energy and improve protection for each leg of the feeder. Typical applications include three-phase protection in manufacturing floors, conveyors, and process lines where reliable, uniform trip characteristics are required. As part of Schneider Electric’s legacy Square D lineage, the LL-6151 is used in compatible low-voltage distribution architectures that rely on three-phase protection within enclosed panels. This device is part of Schneider Electric's broader LL line of breakers used in industrial installations worldwide. It supports three-phase protection across systems.