Square D BDA24080Y1 Molded Case Circuit Breaker

The BDA24080Y1 is a direct upgrade and replacement for the obsolete FA24080AB molded case circuit breaker. It fits the same I-Line panelboards and maintains the exact same AB phase connection.

In the Square D PowerPacT B-Frame series, the Y1 suffix indicates that the breaker is factory-configured for an AB phase connection on the I-Line bus.

No. The BDA24080Y1 features an I-Line style plug-in connection and is exclusively compatible with Square D I-Line panelboards and switchboards. It will not fit in residential QO or Homeline load centers.

Yes. The Square D I-Line system allows dissimilar circuit breakers to be mounted directly across from one another on the bus stack, maximizing panel space and flexibility during installation.

Position the breaker jaws against the bus stack, ensuring the mounting bracket fingers fit into the pan slots. Use a screwdriver in the mounting bracket slot to ratchet the breaker firmly onto the bus, then tighten the retaining screw. Never force the breaker onto the bus.

Yes. When installing or reinstalling an I-Line circuit breaker, you must apply the manufacturer-recommended joint compound (such as PJC7201) to the bus connections to ensure optimal conductivity and prevent overheating.

Yes, this thermal-magnetic breaker is rated for DC applications up to 250VDC. It provides an interrupting capacity of 10kA at 250VDC, making it suitable for industrial DC control and distribution.

Yes, PowerPacT B-Frame breakers include a Visi-Trip indicator that provides clear visual confirmation when the breaker has tripped, allowing for quick fault identification in crowded panelboards.