Part of the PowerPacT family, the Square D QBL32125 is a 3-pole, 125A molded case circuit breaker built for commercial power distribution. It features a unit mount design with included lugs, making it compatible with Square D individual enclosures and switchboards. This breaker acts as a direct substitute for the legacy Q23125 model. The thermal-magnetic trip mechanism offers fixed long-time and instantaneous protection. Rated at 10kAIC for 240VAC systems, it includes the Visi-Trip feature.
Which legacy Square D breaker does the QBL32125 replace?
The QBL32125 serves as a direct replacement for obsolete Q2 Series devices, specifically the Q23125 molded case circuit breaker.
How is the QBL32125 installed in a panel?
This is a unit-mount circuit breaker that secures directly to the panelboard or switchboard chassis. It includes factory-installed lugs on both the line and load sides for direct cable connections.
Will the QBL32125 fit in an I-Line panelboard?
No, the QBL32125 is a unit-mount breaker designed for individual enclosures or standard panelboards. For I-Line group-mounted applications, a different PowerPacT Q-frame breaker configuration with plug-on jaws is required.
Can I use aluminum wire with the QBL32125?
Yes, the factory-installed lugs are dual-rated for both aluminum and copper conductors ranging from 4 AWG to 300 kcmil.
Are the trip settings adjustable on the QBL32125?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip functions are factory set and non-interchangeable.
Is the QBL32125 rated for 100 percent continuous duty?
No, this circuit breaker carries a standard continuous current rating of 80 percent.
How can I manually test the trip mechanism on the QBL32125?
This PowerPacT Q-frame breaker features an integral push-to-trip button on the front cover, allowing electricians to manually trip the breaker to verify mechanical operation.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 14 reviews.