Square D NC36800 Molded Case Circuit Breaker

The NC36800 features an I-Line plug-in connection. It uses specialized plug-on jaws to attach directly to the busbar of Square D I-Line panelboards and switchboards, allowing for faster installation compared to standard bolt-on breakers.

No. The NC36800 is a large N-Frame MCCB exclusively designed for I-Line panelboards and switchboards. It will not fit in QO, NQ, or NF series panels, which require significantly smaller breaker frames and different busbar connections.

Yes, the legacy N-Frame circuit breakers are obsolete. Facilities looking to replace or upgrade this 800A unit typically transition to the modern Schneider Electric PowerPacT M-Frame or P-Frame series, which offer equivalent mounting options for I-Line gear.

The "C" designates the Extra High Interrupting rating for this N-Frame breaker. It provides a 100kA interrupting capacity at 480VAC, making it suitable for commercial and industrial systems with high available fault currents.

The NC36800 features an adjustable instantaneous magnetic trip with a low setting of 4000A and a high setting of 8000A. This allows electricians to fine-tune the short-circuit response to safely coordinate with other protective devices in the power system.

The standard lugs accept three conductors per phase, ranging from 3/0 AWG to 500 kcmil for both aluminum and copper wire. Always verify the specific terminal torque requirements printed on the breaker faceplate prior to final termination.

Yes, this unit includes a manual push-to-trip button on the faceplate. This feature allows maintenance personnel to exercise the mechanical tripping mechanism and verify it operates freely without exposing themselves to live electrical busways.