Built for demanding industrial applications, the Square D QBL32225 is a 225A, 3-pole molded case circuit breaker. It utilizes fixed thermal and magnetic trip elements to deliver precise LI protection for commercial electrical systems. The unit-mount design integrates easily into Square D individual enclosures, switchboards, and panelboards as a main or sub-feed device. It replaces older Q23225 models. This Q-Frame MCCB features a 10kAIC rating at 240VAC and includes a Visi-Trip indicator.
What is the proper lug torque for installing the QBL32225?
The line and load lugs on the QBL32225 must be torqued to 250 lb-in (28 Nm) [1.2.3]. This specification applies to both copper and aluminum conductors sized between 4 AWG and 300 kcmil.
Does this breaker mount into an I-Line panelboard?
No. The "L" in the QBL32225 catalog number denotes a unit-mount configuration with mechanical lugs on both the line and load sides. For a 225A I-Line plug-on breaker, you need catalog number QBA32225.
Which Q-Frame models can directly replace the QBL32225?
If your facility requires a higher interrupting rating, you can substitute the QBL32225 with the QDL32225 (25kA), QGL32225 (65kA), or QJL32225 (100kA). All three are exact physical drop-in upgrades that share the same dimensions and trip parameters.
Does the QBL32225 replace older Square D models?
Yes, the PowerPacT QBL32225 serves as the direct factory replacement for the obsolete Square D Q23225 3-pole circuit breaker.
What type of panels accept the QBL32225 circuit breaker?
This unit-mount Q-Frame breaker is designed for Square D commercial panelboards, including the NQ and NF series, when used as a main or sub-feed breaker with the appropriate mounting kit. It is also fully compatible with stand-alone individual enclosures and switchboards.
What are the instantaneous trip points for the QBL32225?
While the thermal-magnetic trip unit is fixed, the internal magnetic mechanism has a designated low trip setting of 1200A and a high trip setting of 2400A.
Is the QBL32225 rated for HVAC equipment?
Yes, this circuit breaker carries an HACR rating, meaning it is certified for use with commercial heating, air conditioning, and refrigeration systems.
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Review summary
Customers rate this product 4.9 out of 5 based on 14 reviews.