The Siemens NGB3B125B 3 Pole 3 Phase 125A Circuit Breaker is a reliable and efficient electrical component suitable for industrial and commercial applications. With a maximum amperage of 125A and voltage support up to 600VAC and 250VDC, this main breaker can handle heavy electrical loads. The bolt-on mounting style makes installation quick and easy, while the white color indicates its neutral appearance. Designed by the trusted brand Siemens, this circuit breaker ensures quality and performance in a variety of electrical systems.