The SIEMENS NEB2B020 is a 20A, 480V bolt-on circuit breaker with a maximum amperage of 20A. It has a current rating of 16-30A and is designed for commercial, industrial, and branch circuit applications. This main breaker features a switch control style and operates with an on/off method. With 2 poles, this Siemens circuit breaker is a reliable choice for electrical protection in various settings.