Cutler-Hammer FDB3040LD08 40 A, 3-pole molded-case circuit breaker rated up to 600 V AC protects 3-phase electrical circuits in distribution panels. This Eaton/Cutler-Hammer device delivers reliable overcurrent protection with a 40 A rating for systems operating at 600 V AC. It is suitable for panel installations requiring compact, durable 3‑phase circuit protection in industrial or commercial power distribution.
