Product Description: The Siemens KM3B400 is a Molded Case Circuit Breaker from the K Frame family. It features a 3-pole design with a 600V, 400A rating and a 50kA@480V AIC rating. This Bolt-On connection breaker includes Thermal Magnetic protection for reliable performance. Key Features: ✔ Part Number: KM3B400 ✔ Manufacturer: ITE, Siemens ✔ Category: Circuit Breaker ✔ Subcategory: Molded Case ✔ Family: K Frame ✔ Type: KM ✔ Voltage: 600 ✔ Amperage: 400 ✔ Phase: 3 ✔ Poles: 3 ✔ AIC rating: 50kA@480V ✔ Connection: Bolt-On ✔ Functions: LI - Long-Time and Instantaneous ✔ Protection: Thermal Magnetic ✔ Weight: 56