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Square D QBA221501 Molded Case Circuit Breaker
- 150A
- 2 Pole
- I-Line
Square D
QBA221501
Molded Case Circuit Breaker
Brand
Square D
SKU
QBA221501
Quantity
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Square D QBA221501 - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D QBA221501 - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | QBA221501 |
| Series | QBA |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 208Y/120VAC, 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, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, NOM-003-SCFI, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Phase Connection AB, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, Visual Trip Indicator |
Sold out
Quantity
Square D QBA221501 - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QBA221501-R |
| Series | QBA |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 208Y/120VAC, 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, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, NOM-003-SCFI, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Phase Connection AB, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, Visual Trip Indicator |
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Description
Built for heavy-duty power distribution, the Square D QBA221501 is a 150A, 2-pole MCCB in the PowerPacT Q-Frame lineup. It utilizes a thermal-magnetic trip unit for LI protection. Designed for Square D I-Line panelboards, this breaker uses a plug-on mounting mechanism for efficient installation. It is an exact replacement for the older Q22150 model. Delivering a 10kAIC interrupt rating at 240VAC, the breaker features an AB phase connection and comes equipped with load-side lugs.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBA221501 |
| Series | QBA |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 208Y/120VAC, 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, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, NOM-003-SCFI, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Phase Connection AB, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
8 answersWhat panelboards are compatible with the QBA221501 circuit breaker?
This PowerPacT Q-Frame breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-on connection.
Can the QBA221501 replace older Square D circuit breakers?
Yes, the PowerPacT Q-Frame QBA221501 is a direct replacement for the legacy Square D Q22150 circuit breaker.
What phase connection does the QBA221501 use?
This 2-pole I-Line circuit breaker features an AB phase connection.
What size wire can be used with the load-side lugs on this breaker?
The included load-side lugs accept aluminum or copper conductors ranging from 4 AWG to 300 kcmil.
What type of trip unit is installed in the QBA221501?
It features a fixed thermal-magnetic trip unit providing long-time and instantaneous (LI) overcurrent protection. The thermal element protects against overloads, while the magnetic element responds to short circuits.
How much mounting space does the QBA221501 require in an I-Line panelboard?
This 2-pole Q-Frame circuit breaker requires 3 inches of vertical mounting space in an I-Line panelboard or switchboard.
Is this breaker suitable for 277V or 480V applications?
No, the QBA221501 has a maximum voltage rating of 240VAC and cannot be used on 277V or 480V systems.
How does the QBA221501 connect to the panelboard bus?
The line side utilizes an I-Line plug-on jaw connection that mounts directly to the panelboard bus, while the load side uses standard box-type lugs for cable connections.
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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!