Schneider Electric C125LB Molded Case Circuit Breaker

The Schneider Electric Merlin Gerin C125LB molded-case circuit breaker is a three-pole protective device rated for 200 A at up to 380 V, designed for three-phase power distribution. This MCCB, part of Schneider Electric’s Merlin Gerin lineage, provides overcurrent protection for feeders and equipment in industrial or commercial electrical systems where a compact, replaceable protective switch is required. The C125LB is intended for installation in standard distribution boards and panel enclosures that accept molded-case breakers, delivering reliable interruption for circuits operating at 380 V AC in three-phase configurations. Typical applications include protection of feeders to motors, transformers, and other heavy loads in motor control centers, panelboards, and electrical distribution panels where a 200 A, 3-pole rating at 380 V is appropriate. When selecting protection for a three-phase system in this voltage range, the C125LB offers a compact form factor within Schneider Electric’s legacy MCCB family, enabling straightforward coordination with upstream protection and downstream devices while fitting common electrical enclosures used in commercial and light-industrial facilities.