Eaton Corporation DK3400W N Molded Case Circuit Breaker

The Eaton DK3400W N molded‑case circuit breaker (Cutler Hammer) is a 3‑pole protective device rated for 400 A at up to 600 V. Identified by the DK3400W N designation, it belongs to Eaton’s Cutler‑Hammer molded‑case family and is designed to interrupt fault currents to protect connected wiring and equipment. With a 3P configuration, this breaker provides three‑phase protection for circuits operating at 600 V and carrying up to 400 A. The 400 A, 600 V rating defines its continuous load capacity and maximum interrupting capability within standard electrical installations, making it suitable for use in panelboards and distribution setups that require a high‑current, three‑pole breaker.