Siemens HGB3B020B is a three-pole molded-case circuit breaker rated for 20 A in 600Y/347 V three-phase service, UL489-listed for panelboards and industrial applications. It carries a 14 kA interrupt rating at 600Y/347 V and 35 kA at 480Y/277 V, with load-lug terminals included for direct wiring. Cataloged as US2:HGB3B020B in Siemens’ official listings, this device belongs to the HGB family designed for reliable protection of distribution circuits in commercial electrical systems.
