Built for heavy-duty power distribution, the Square D QDA32125 is a 125A, 3-pole molded case circuit breaker. As part of the PowerPact Q-Frame series, it delivers dependable thermal-magnetic protection for commercial and industrial facilities. Designed for quick integration, the breaker installs into Square D I-Line panelboards and switchboards. It is also an exact drop-in substitute for discontinued Q23125 models. This 240VAC breaker offers a 25kA interrupt rating and fixed LI trip functions.
The part number breaks down as Q for the PowerPacT Q-frame, D for a 25kA interrupting rating at 240VAC, A for the I-Line shroud connection on the ON end, 3 for three poles, 2 for a 240VAC maximum rating, and 125 for the 125A continuous current rating.
What is the required lug torque for the QDA32125?
The factory installed lugs require a tightening torque of 247.8 lbf-in (28 N-m) for the supported 4 AWG to 300 kcmil aluminum or copper wire.
What is the recommended wire stripping length for the power terminals?
The manufacturer recommends a power wire stripping length of 0.87 inches (22 mm) prior to seating your conductors in the lugs.
Which older Square D circuit breakers does this Q-frame model replace?
The Square D PowerPacT Q-frame circuit breakers serve as a direct replacement for legacy Square D Q2 series devices.
Is the QDA32125 breaker rated for HVAC equipment?
Yes, this circuit breaker is HACR rated, making it suitable for heating, air conditioning, and refrigeration applications.
What is the phase connection type for this breaker?
The QDA32125 features an ABC phase connection, allowing it to engage all three phases on standard Square D I-Line bussing.
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Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.