Built for heavy-duty power distribution, the Square D QDA221502 is a 2-pole, 150A molded case circuit breaker belonging to the PowerPacT Q-Frame lineup. It delivers fixed thermal and magnetic (LI) trip protection to safeguard commercial circuits against overloads. Designed for Square D I-Line panelboards and switchboards, this model features an AC phase connection. It functions as an exact replacement for the discontinued Q221502 catalog number. Operating at 240VAC, it provides a 25kAIC rating.
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection and cannot be used in standard load centers like QO or Homeline.
What does the final digit in the QDA221502 catalog number indicate?
The '2' at the end of the part number indicates that this 2-pole breaker is factory configured for an AC phase connection on the I-Line bus.
Is the QDA221502 a direct replacement for the legacy Q221502?
Yes, this PowerPacT Q-frame breaker is the direct, exact replacement for the discontinued Square D Q221502 circuit breaker.
What is the required tightening torque for the load lugs?
The load lugs must be torqued to 247.8 lb-in (28 N.m) when using the accepted wire range of 4 AWG to 300 kcmil aluminum or copper conductors.
What is the recommended wire stripping length for the load terminals?
The recommended power wire stripping length for the load lugs is 0.87 inches (22 mm).
Can this Q-frame breaker be used in 480V systems?
No, the QDA221502 has a maximum voltage rating of 240VAC. It is not suitable for 480V or 600V distribution systems.
Is the QDA221502 suitable for HVAC applications?
Yes, this circuit breaker is HACR rated, making it fully compliant for use with heating, air conditioning, and refrigeration equipment that requires this specific designation.
Are the thermal and magnetic trip settings adjustable on this model?
No, the QDA221502 features fixed thermal and fixed magnetic trip units. The long-time and instantaneous (LI) trip functions cannot be adjusted in the field.
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Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.