Eaton DK3400W is a three-pole molded case circuit breaker (MCCB) with a 400 A frame and a 350 A trip rating. It provides overcurrent protection for three‑phase circuits in electrical distribution systems, interrupting current to prevent damage from overloads or faults. This DK3400W unit is designed for applications requiring a 400 A frame and a 350 A trip setting from Eaton's DK line.
