QO225 is the standard 25A two-pole member of the Square D QO family. It is a 120/240V AC, 10 kA plug-in breaker with thermal-magnetic trip operation for correctly sized two-pole circuits.
QO225 specifications
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Model: QO225
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Product line: Square D QO
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Breaker type: Standard thermal-magnetic
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Rating: 25A, 2 pole, 120/240V AC
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Interrupting capacity: 10 kA
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Mount: Plug-in
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Special fault sensing: None; not AFCI or GFCI
Standard means no test-button electronics
QO225 provides overcurrent and short-circuit protection; it does not provide arc-fault or ground-fault interruption. There is no neutral pigtail or plug-on-neutral feature to match. This distinction prevents standard QO listings from inheriting inaccurate language used for electronic breakers.
Validate the two-pole application
Confirm QO225 appears on the panel’s permitted-breaker label and that 25A, two poles, 120/240V, and 10 kA meet the load and system design. Conductor ampacity and equipment instructions—not the existing handle alone—govern breaker size. Have a qualified person perform the calculation, selection, and installation.