Schneider Electric B0.63 Molded Case Circuit Breaker, also listed as Square-D B0.63, is a molded‑case protection device used for overcurrent protection in electrical distribution panels and enclosures. As a molded‑case breaker, it interrupts fault currents to shield conductors and equipment in the installation. The B0.63 designation identifies this specific model within Schneider Electric's Square‑D lineup of molded‑case circuit breakers.
