BGA34040

The BGA34040 is a Square D PowerPact B-frame molded case circuit breaker rated for 40 amps at 480 with 3 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 BGA34040 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 BGA34040 is an I-Line plug-in breaker with an ABC phase connection and a continuous current rating of 80 percent. It accepts wire sizes from 14 AWG to 2/0 AWG (copper or aluminum), and PowerPact B breakers comply with UL, CSA, NOM, and IEC standards and are CE marked. Because Square D builds this breaker in several versions, it is worth confirming the part number, voltage, and phase connection against your panelboard before ordering. This makes the BGA34040 a practical choice for electricians and facility teams who need a dependable I-Line breaker and want to keep an existing panelboard running. Purchase the BGA34040 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.