As part of the PowerPacT B-Frame family, the Schneider Electric BJA36050 provides dependable overcurrent protection for industrial applications. This 3-pole, 50A MCCB utilizes an I-Line mounting style, allowing it to install into compatible Square D panelboards and switchboards. It serves as a direct replacement for legacy FH36050 models. Rated for 65 kAIC at 480VAC, it features fixed thermal-magnetic trip settings (LI). The unit includes dual-break rotating contacts and load side lugs.
What panelboards accept the BJA36050 circuit breaker?
It is designed for installation in Square D I-Line panelboards and switchboards. It uses a plug-on I-Line connection on the line side, allowing for quick, stab-in mounting to the busbar.
Which legacy Square D breakers does the BJA36050 replace?
The PowerPacT B-frame series, including the BJA36050, is the modern replacement for legacy 50A Square D FA and FH frame I-Line circuit breakers.
Does the BJA36050 require line-side wiring lugs?
No. As an I-Line style breaker, the line side features mounting jaws that plug directly into the panelboard busbar. Wire lugs are only utilized on the load side.
Are the load side lugs on the BJA36050 rated for aluminum wire?
Yes, the standard mechanical load side lugs accept both aluminum (Al) and copper (Cu) conductors. They accommodate wire sizes from 14 AWG up to 2/0 AWG.
Does the BJA36050 have adjustable trip settings?
No, the trip unit has a fixed thermal and fixed magnetic (LI) configuration. It does not feature adjustable dials for modifying the overload or short-circuit trip thresholds.
What does the letter J in the BJA36050 catalog number signify?
The letter J indicates the specific interrupting rating tier within the PowerPacT B-frame family. The J-tier provides a 65kA short-circuit rating at 480VAC and a 100kA rating at 240VAC.
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