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Square D QBA221754 Molded Case Circuit Breaker
- 175A
- 2 Pole
- I-Line
Square D
QBA221754
Molded Case Circuit Breaker
Brand
Square D
SKU
QBA221754
Quantity
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Square D QBA221754 - 175A 2 Pole Molded Case Circuit Breaker
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Description
Providing essential protection, the Square D QBA221754 is a 175A, 2-pole molded case circuit breaker. This PowerPacT Q-Frame unit features fixed thermal and magnetic trip elements for LI defense. This breaker mounts into Square D I-Line panelboards and switchboards. It features a factory-configured BC phase connection and serves as a direct substitute for the legacy Q22175. Rated for 10kAIC at 240VAC, the QBA221754 is HACR rated. The Visi-Trip indicator provides clear visual confirmation.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBA221754 |
| Series | QBA |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QBA |
|---|---|
| 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, Handle Padlock Attachment |
|---|---|
| Accessories | Phase Connection BC (Factory Configured) |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, 80% Rated |
Product FAQs
6 answersWhat type of panelboards are compatible with the QBA221754 circuit breaker?
The QBA221754 is an I-Line style plug-in breaker designed exclusively for use in Square D I-Line panelboards and switchboards. It is not compatible with standard QO or Homeline load centers.
What is the difference between Square D QBA, QDA, QGA, and QJA breakers?
The second letter in the catalog number indicates the interrupting capacity of the breaker at 240V. The QBA series is rated for 10kAIC, while QDA is 25kAIC, QGA is 65kAIC, and QJA is 100kAIC. Ensure the interrupting rating meets or exceeds the available fault current of your system.
How are wire connections made on the QBA221754?
The line side of the QBA221754 plugs directly into the I-Line panelboard bus and does not require wiring. The load side features factory-installed mechanical lugs that accept 4 AWG to 300 kcmil aluminum or copper wire.
Can the QBA221754 replace older Square D Q2 series breakers?
Yes, PowerPact Q-frame breakers like the QBA221754 are the direct modern replacements for legacy Q2 series breakers in I-Line panels. You must verify that the 10kAIC rating meets your current system requirements, as some older Q2 breakers had higher interrupting capacities.
What does the number 4 at the end of the QBA221754 catalog number indicate?
For Square D I-Line breakers, the final digit specifies the phase connection. The number 4 in QBA221754 indicates that this 2-pole breaker is factory-configured to connect to the B and C phases on the panelboard bus.
Does the QBA221754 include a push-to-trip feature?
Yes, this breaker includes a push-to-trip button on the faceplate. This safety feature allows electricians to manually trip the breaker to verify the mechanical operation of the trip mechanism during maintenance.
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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!