Eaton DK3400W Three-Phase 400A 600V Circuit Breaker

The Eaton DK3400W is a three-phase circuit breaker configured as a 3-pole device rated for 400 amps and up to 600 volts, designed to interrupt fault currents in 3-phase electrical distribution systems and protect connected feeders from overcurrent. It provides protection across all three phases, ensuring coordinated tripping in the event of an overload or short circuit, which helps prevent damage to equipment and reduces the risk of electrical fires in commercial and industrial installations. The 400 A rating specifies the maximum continuous current the device can carry under normal operating conditions, while the 600 V rating denotes the highest voltage of circuits it is intended to interrupt safely. The DK3400W model designation identifies this specific unit for use in appropriate electrical panels or switchgear where a high-current, three-phase protective device is required.