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Square D QBA221101 Molded Case Circuit Breaker
- 110A
- 2 Pole
- I-Line
Square D
QBA221101
Molded Case Circuit Breaker
Brand
Square D
SKU
QBA221101
Quantity
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Square D QBA221101 - 110A 2 Pole Molded Case Circuit Breaker
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Description
The QBA221101 is a thermal-magnetic MCCB from Square D's PowerPacT Q-Frame family, engineered for commercial power distribution. This 2-pole breaker installs into Square D I-Line panelboards and switchboards. It serves as a replacement for the legacy Q22110, offering an AB phase connection and load-side lugs. Rated for 10kAIC at 240VAC, the unit features fixed long-time and instantaneous (LI) trip functions. It includes a Visi-Trip indicator and is HACR rated for HVAC equipment.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBA221101 |
| Series | QBA |
| Amperage | 110A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, 80% Rated, Phase Connection AB |
Product FAQs
7 answersWhat panelboards are compatible with the QBA221101?
The QBA221101 is an I-Line style plug-on circuit breaker designed exclusively for use in Square D I-Line panelboards and switchboards. It is not compatible with standard QO, NQ, or NF load centers.
Are there higher interrupting rating alternatives to the QBA221101?
Yes. The QBA221101 has a 10 kAIC rating at 240V. If your system requires a higher short-circuit current rating, Square D offers the QDA221101 (25 kAIC), QGA221101 (65 kAIC), and QJA221101 (100 kAIC) as direct I-Line plug-on replacements.
Does the QBA221101 require a separate mounting bracket?
No. As an I-Line breaker, the QBA221101 features plug-on line-side jaws that connect directly to the I-Line bus stack, requiring no additional mounting brackets or hardware.
What wire sizes are accepted by the lugs on the QBA221101?
The load-side lugs on this breaker accept 4 AWG to 300 kcmil aluminum or copper wire.
Does the QBA221101 have an adjustable trip unit?
No, the QBA221101 features a fixed thermal-magnetic trip unit with non-adjustable long-time and instantaneous (LI) trip functions.
Can the QBA221101 replace older Q2-series breakers?
Yes, the PowerPacT Q-frame is a direct replacement for legacy Square D Q2-series circuit breakers of the same configuration.
What does the 1 at the end of the QBA221101 catalog number indicate?
In the Square D PowerPacT Q-frame I-Line series, the final digit indicates the phase connection. The 1 in QBA221101 specifies an AB phase connection for mounting on the panelboard bus.
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Reviews
Review summary
Customers rate this product 4.6 out of 5 based on 12 reviews.
Total 5 star reviews: 10 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 1
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Rating
12 reviews
- DMDonaldo M. A.Verified BuyerReviewingSquare D QBA32125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/7/26Fast, Easy and Great Item
I bought this item for the first time and it was great! through the website it was easy to find my exact item and also the payment was easy to submit, deliver was on point.
Great company and products.
- KPKevin P.Verified BuyerReviewingSquare D QBA32200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/5/26Sq D I line breaks
Great price and is exactly what was discribed
- DDDavid D.Verified BuyerReviewingSquare D QBA32110 - 110A 3 Pole Molded Case Circuit BreakerI do not recommend this productRated 1 out of 5 stars1/20/26Breaker
Need to return this item.
- DMDave M.Verified BuyerReviewingSquare D QBA32150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/12/25Excellent All Around
Speedy shipping and great staff to work with.
- DBDoug B.ReviewingSquare D QBA32200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/28/23Great service, great item!
Great service, great item!