The USED Siemens BL B3100 3 Pole 100 Amp 240V Bolt-On Silkscreen Circuit Breaker is a high-quality electrical component manufactured by Siemens in Germany. This circuit breaker is designed for heavy-duty industrial applications, with a maximum amperage of 100A. The bolt-on design and silkscreen display make installation and operation easy and efficient, making it an essential piece of equipment for any electrical system.