Product Description: The Square D MX36300G is a Molded Case Circuit Breaker from the I-Line family. It features 3 poles, 600V voltage, and a 300A amperage rating with a 65kA@480V AIC rating. This breaker uses an I-Line Style Plug-In connection and includes Solid State protection with LSIG functionality. Key Features: ✔ Part Number: MX36300G ✔ Manufacturer: Square D ✔ Category: Circuit Breaker ✔ Subcategory: Molded Case ✔ Family: I-Line ✔ Type: MX ✔ Voltage: 600V ✔ Amperage: 300A ✔ Phase: 3 ✔ Poles: 3 ✔ AIC Rating: 65kA@480V ✔ Connection: I-Line Style Plug-In ✔ Functions: LSIG (Long-Time, Short-Time, Instantaneous, Ground Fault) ✔ Protection: Solid State ✔ Dimensions: 8.05" D x 8.27" W x 12.86" H (204.47mm x 210.06mm x 326.64mm) ✔ Weight: 40 lbs