Square D BGA36050 Molded Case Circuit Breaker

Yes. This PowerPacT B frame breaker is the designated modern upgrade for legacy FA frame models, specifically the FA36050. It features the same plug-in connection, allowing it to mount directly into existing Square D I-Line panelboards and switchboards. Always verify equipment dimensions and code requirements before retrofitting.

Both are 50 amp, 3 pole PowerPacT B breakers, but they carry different short-circuit interrupting ratings. The BGA has a G rating with 35 kA of interrupting capacity at 480 VAC. The BDA has a D rating, which is lower at 18 kA at 480 VAC. You must match or exceed the available fault current of your specific application.

No. The BGA36050 features an I-Line style plug-in design engineered exclusively for Square D I-Line switchboards and panelboards. It lacks the mounting hardware required for standard unit-mount configurations or residential load centers.

The I-Line design utilizes a plug-on connection that snaps directly onto the panelboard bus assembly. This eliminates the need for individual bolted bus connections, significantly reducing installation time and allowing for flexible breaker placement within the panel.

The LI designation stands for Long-Time and Instantaneous protection. The thermal component, or Long-Time setting, protects the circuit against sustained overloads. The magnetic component, or Instantaneous setting, provides immediate tripping when high-level short circuits are detected.

No. This specific thermal-magnetic circuit breaker features fixed Long-Time and fixed Instantaneous trip settings. If your application requires field-adjustable trip curves, you will need to specify a different breaker family equipped with an electronic trip unit.