Siemens NGB3K015 Circuit Breaker

Siemens NGB3K015 is a GB2-frame molded-case circuit breaker designed for three-pole protection in low-voltage distribution panels. It is rated 15 A for three-phase service up to 600Y/347 V AC, with a thermal-magnetic trip that provides reliable overcurrent protection. The unit delivers a 25 kA interrupting capacity at 480 V, with a 14 kA rating at 600Y/347 V, making it suitable for branch circuits in commercial and light-industrial installations that operate within these voltages. UL489-certified, the NGB3K015 is intended for panelboard mounting with load-lug connections; bolt-on mounting is supported in compatible Siemens installations. As part of Siemens’ NGB family, the GB2-frame breaker combines compact size with robust protection characteristics, suitable for motor feeders, lighting panels, and other three-phase circuits where a 15 A protective device is required within the 600V class. This device is appropriate for systems designed for 600V-class voltages and adheres to standard low-voltage distribution practices, providing dependable interruption during short circuits and overloads in accordance with its listed ratings.