Product Description: The Square D MGA36300 is a Molded Case Circuit Breaker from the Powerpact family. It features a 3-pole design with a 600V, 300A rating and a 35kA@480V AIC rating. This breaker uses an I-Line Style Plug-In connection and includes solid-state protection. It is UL, CSA, NEMA, NOM, and CE certified for safety and compliance.