Siemens NGB1B030B is a 30-amp, 1-pole molded-case circuit breaker (MCCB) in Siemens’ NGB VL family, designed for panelboard mounting and reverse-feed applications. It is rated for 480Y/277V AC systems and uses a thermal-magnetic trip with long-time and instantaneous protections. The unit provides a 14 kA interrupt rating and includes load-side lug terminals, making it suitable for panelboard installations. This compact, bolt-on breaker delivers reliable short-circuit protection in commercial and light industrial electrical distributions.
