Square D Q232150H Molded Case Circuit Breaker

This I-Line plug-in breaker mounts directly onto the stepped bus stack of Square D I-Line panelboards and switchboards. Its plug-on jaw connection is proprietary and will not fit standard NQ, NF, or QO load centers.

Yes. The Square D legacy Q2 frame has been superseded by the PowerPact Q-frame series. The PowerPact QDA32150 serves as a direct drop-in replacement for I-Line panelboards, matching the physical footprint and electrical function.

I-Line breakers feature a molded plug-on jaw assembly that snaps directly onto the panelboard bus stack. This design allows for fast, secure installation without the need to bolt the breaker to the bus, though load-side conductors must still be terminated at the lugs.

In the legacy Q2 series, the H denotes a high-interrupting capacity model. While standard versions typically offer a 10 kA short-circuit rating, the H version provides an upgraded fault-clearing capability of 22 kA at 240V AC.

No. This unit relies on standard thermal-magnetic technology to provide long-time overload and instantaneous short-circuit protection. It does not contain electronic GFCI or AFCI circuitry.

No. The thermal and magnetic trip elements on this molded case circuit breaker are fixed at the factory. Applications requiring adjustable coordination will need a breaker equipped with an electronic trip unit.

No. QMB panelboards require specialized fusible switches or QMB-style plug-in breaker modules. This device is designed exclusively for the distinct bus structure of I-Line distribution equipment.

Yes, I-Line molded case breakers include mechanical lugs on the load side for terminating your outgoing circuit wiring. The line side receives its power through the integrated plug-on jaw assembly.