While Supplies Last Square D NC36900 – 900A 3 Pole Molded Case Circuit Breaker

Built for heavy industrial use, the Square D NC36900 is a 3-pole, 900A molded case circuit breaker providing long-time and instantaneous (LI) protection. This unit installs into Square D I-Line panelboards and switchboards. As a legacy N-Frame breaker, it serves as an exact replacement for existing setups, while modern upgrades transition to the PowerPacT P-Frame series. Rated for 100kA at 480VAC, it features an adjustable magnetic trip to fine-tune instantaneous response.