Price Drop Eaton / Cutler-Hammer DK3400 – 400A 3 Pole Molded Case Circuit Breaker

Engineered for heavy-duty power distribution, the DK3400 is a 400A, 3-pole MCCB from Eaton’s Series C K-Frame family. It utilizes a fixed thermal-magnetic trip unit to deliver precise long-time and instantaneous (LI) protection. Designed for unit mounting within Eaton switchboards and motor control centers, it includes line and load lugs for dual 3/0 AWG to 250 kcmil conductors. With a 65kAIC rating at 240VAC, this HACR-rated breaker safely handles significant commercial fault currents.