Eaton DK3400W Circuit Breaker

Eaton Cutler-Hammer DK3400W is a 3-pole circuit breaker rated for 400 amperes at 240 volts AC. Identified as a Type DK device in the DK3400 family, the DK3400W provides overcurrent protection for electrical distribution circuits in industrial or commercial installations where a robust 240 VAC protection device is required. The 3-pole configuration supports three conductors, enabling protection of multi‑wire or multi‑line circuits within compatible panels or enclosures that accept Type DK breakers. Built by Eaton under the Cutler-Hammer brand, the DK3400W carries the durability and design language of the DK series for reliable interruption of fault current and overload conditions. When selecting this breaker, ensure your system voltage matches 240 VAC and the current rating aligns with the protected circuit’s load to maintain safe operation and compliance with applicable electrical codes.