Product Description: The Siemens CQD390 is a Molded Case Circuit Breaker from the CQD Series. It features a 3-pole design, 480V voltage rating, and 90A amperage capacity with a 14kA@480V AIC rating. This breaker uses Feed-Thru connections and includes Thermal Magnetic protection for reliable performance. Key Features: ✔ Part Number: CQD390 ✔ Manufacturer: Siemens ✔ Category: Circuit Breaker ✔ Subcategory: Molded Case ✔ Family: CQD Series ✔ Type: CQD ✔ Voltage: 480V ✔ Amperage: 90A ✔ Phase: 3 ✔ Poles: 3 ✔ AIC Rating: 14kA@480V ✔ Connection: Feed-Thru ✔ Protection: Thermal Magnetic ✔ Wire Size: 6 to 1/0 AWG Aluminum, 8 to 1 AWG Copper ✔ Certification: UL Listed, CSA Certified ✔ UPC: 783643277847 ✔ GTIN: 00783643277847 ✔ Country of Origin: Mexico ✔ Weight: 2.15 lbs