The BGA24090Y1 is a Square D PowerPact B-frame molded case circuit breaker rated for 90 amps at 480 with 2 poles, designed to provide compact, dependable circuit protection in Square D I-Line panelboards and switchboards. With a breaking capacity of 35kA@480V, it can safely interrupt the fault currents found on typical commercial and industrial systems. The BGA24090Y1 uses a thermal-magnetic trip that provides long-time and instantaneous protection. The thermal element responds to sustained overloads, while the magnetic element trips instantly on a short circuit, so the breaker can clear a fault quickly and still tolerate the brief surges that equipment draws at startup. PowerPact B-frame breakers use dual-break rotating contacts to reduce peak current during a short circuit, and a push-to-trip button in the cover lets the breaker be tripped manually for testing. Mechanically, the BGA24090Y1 is an I-Line breaker with a shrouded plug-on jaw on the line side and mechanical lugs on the load side. It has a continuous current rating of 80 percent and a factory-set phase connection, which is identified by the last digit of the part number and sets which phases of the panelboard bus the breaker connects to. PowerPact B breakers comply with UL, CSA, NOM, and IEC standards and are CE marked. Because Square D builds this breaker with different phase connections, it is worth confirming the part number and phase connection against your panelboard before ordering. This makes the BGA24090Y1 a practical choice for electricians and facility teams who need to replace or add an I-Line breaker and keep an existing panelboard running. Purchase the BGA24090Y1 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers, panelboard components, and electrical products from manufacturers like Square D, Schneider Electric, Siemens, Eaton, and Cutler-Hammer, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.