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Square D Q221225AB Molded Case Circuit Breaker
- 225A
- 2 Pole
- I-Line
Square D
Q221225AB
Molded Case Circuit Breaker
Brand
Square D
SKU
Q221225AB
Quantity
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Square D Q221225AB - 225A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for 225A commercial loads, the Square D Q221225AB is a 2-pole molded case circuit breaker that delivers robust thermal-magnetic protection. The breaker mounts into Square D I-Line panelboards, utilizing an AB phase connection. When modernizing older switchgear, this legacy model is replaced by the PowerPact QBA22225. Providing a 10kAIC interrupt rating at 120/240VAC, it features fixed long-time and instantaneous trip functions. The HACR-rated unit includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | Q221225AB |
| Series | Q2 |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | A-B Phase Connection (Suffix AB) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards accept the Q221225AB circuit breaker?
This breaker is designed specifically for Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-in connection and will not fit standard load centers or unit-mount enclosures.
What does the AB suffix indicate on the Q221225AB catalog number?
The AB suffix specifies the bus phase connection. This 2-pole breaker is configured to connect to the A and B phases of the I-Line panelboard bus.
What is the modern replacement for the legacy Q221225AB breaker?
The Q221225AB is a legacy Q-Frame breaker. For modernizing older switchgear, the direct current-generation replacement is the Square D PowerPact QBA22225.
Are the trip settings adjustable on the Q221225AB?
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-adjustable.
Does the Q221225AB provide visual trip indication?
Yes, this breaker includes a Visi-Trip indicator. When the breaker trips due to an overcurrent or short-circuit condition, the handle snaps to a center position and a high-visibility indicator alerts the operator.
Is the Q221225AB suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific overcurrent protection standard.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 8 reviews.
Total 5 star reviews: 8 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
8 reviews
- MEMichael E.Verified BuyerReviewingSquare D Q221150AC - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/28/26breaker purchase
delivered on time and quality was as advertised
- MWmakalita w.Verified BuyerReviewingSquare D Q232150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/18/26Prompt service.
Well packaged
- GSGreg S.Verified BuyerReviewingSquare D Q232200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/29/25Great Job
Whenever I need a breaker and my local distributor can't handle or get what I need, Superbreakers has always come through for us.
- AWAllen W.ReviewingSquare D Q232175 - 175A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/17/22Great condition
The breakers were in great condition. The serve was also great.
- JCJim C.ReviewingSquare D Q232200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/13/22Great Service
My order was received fast. The packaging was perfect. The quality of the product was what was expected.