Part of the PowerPacT B-Frame series, the Square D BJL36080 is an 80A molded case circuit breaker built for industrial enclosures. It delivers reliable thermal-magnetic protection with fixed LI trip functions. This unit-mount breaker installs onto standard back pans or DIN rails. It serves as a space-saving replacement for discontinued FCL36080 and FHL36080 breakers. Rated 65kAIC at 480VAC, it includes EverLink lugs on both ends to combat cable creep over time.
This unit-mount breaker can be installed using a standard screw plate or clipped directly onto a 35 x 15 mm symmetrical DIN rail, making it versatile for various panel configurations.
Can the BJL36080 be used in DC electrical systems?
Yes, this breaker is dual-rated for AC and DC applications. It supports up to 250VDC with an interrupting rating of 50kA.
What does the J in the BJL36080 catalog number indicate?
In the PowerPacT B-frame nomenclature, the J designates the interrupting rating tier. For this breaker, it indicates a 65kA interrupting capacity at 480VAC.
What wire sizes are compatible with the lugs on this breaker?
The standard line and load lugs accept wire gauges from 14 AWG up to 3/0 AWG and are compatible with both aluminum and copper conductors.
What type of protection does the LI trip function provide?
The LI designation stands for Long-Time and Instantaneous protection. Long-Time protects the circuit against sustained overloads, while Instantaneous trips the breaker immediately during a short circuit.
Are the thermal and magnetic trip settings adjustable on this model?
No, the BJL36080 features a fixed thermal and fixed magnetic trip unit, meaning the trip thresholds cannot be adjusted in the field.
What types of equipment is this B-frame breaker suitable for?
It is designed for use in industrial control panels, standard enclosures, and switchboards where compact thermal-magnetic protection is required.
How does the BJL36080 differ from the BDL36080 or BGL36080?
The difference lies in the interrupting rating (AIC). While the BJL offers 65kA at 480VAC, the BDL provides 18kA and the BGL provides 35kA at the same voltage. They share the same physical footprint and 80A rating.
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