Eaton Cutler-Hammer KD3300W Three-Phase Circuit Breaker

The Eaton Cutler-Hammer KD3300W operates as a rugged three-phase circuit breaker designed to deliver reliable overcurrent protection within commercial and industrial electrical distribution applications. This 3 Pole unit features a 300 AMP current rating and falls under the Type KD classification, utilizing thermal magnetic mechanisms to protect downstream components against excessive current and short circuits. Installation efficiency is significantly enhanced through the inclusion of Load Side Lugs, allowing qualified electricians to terminate primary feeder cables directly without purchasing additional conduit or external connector hardware. Since the KD3300 maintains standardized mounting configurations, it serves as a functional upgrade for existing panelboards requiring higher ampacity protection levels while ensuring compliance with relevant National Electrical Code requirements.