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Square D QDA221503 Molded Case Circuit Breaker
- 150A
- 2 Pole
- I-Line
Square D
QDA221503
Molded Case Circuit Breaker
Brand
Square D
SKU
QDA221503
Quantity
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Square D QDA221503 - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
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Square D QDA221503 - 150A 2 Pole Molded Case Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | QDA221503 |
| Series | QDA |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, 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, 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, Phase Connection BA |
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Square D QDA221503 - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QDA221503-R |
| Series | QDA |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, 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, 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, Phase Connection BA |
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Description
Part of the PowerPacT Q-Frame lineup, the Square D QDA221503 provides thermal-magnetic protection for commercial and industrial systems. This 150A, 2-pole breaker handles demanding power distribution with long-time and instantaneous (LI) trip functions. Engineered for seamless integration, it mounts into Square D I-Line panelboards and switchboards. It features a BA phase connection and replaces legacy Q221503 models. Rated 25kAIC at 240VAC, it includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | QDA221503-R |
| Series | QDA |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, 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, 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, Phase Connection BA |
Product FAQs
9 answersWhat panelboards are compatible with the QDA221503?
This breaker is designed for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection and is not compatible with QO or Homeline load centers.
Can I use the QDA221503 to replace an older Q2 Series breaker?
Yes, the PowerPacT Q-frame circuit breaker is a direct replacement for legacy Q2 Series devices in I-Line panelboards.
What does the 3 at the end of the QDA221503 catalog number mean?
In Square D PowerPacT Q-frame nomenclature, the 3 suffix on a 2-pole I-Line breaker indicates a BA phase connection on the bus.
Are the trip settings adjustable on the QDA221503?
No, the QDA221503 features a thermal-magnetic trip unit with fixed thermal (long-time) and fixed magnetic (instantaneous) settings.
What is the interrupting rating of the QDA221503 compared to other Q-frame breakers?
The QDA221503 has an interrupting rating of 25 kAIC at 240V. If your system requires a different rating, the QBA series offers 10 kAIC, the QGA offers 65 kAIC, and the QJA offers 100 kAIC.
What is the recommended lug torque for the QDA221503?
The line and load lugs should be torqued to 248 lb-in (28 N.m). The lugs accept 4 AWG to 300 kcmil aluminum or copper wire.
What is the wire stripping length for the lugs on this breaker?
The recommended power wire stripping length for the lugs is 0.87 inches (22 mm).
What is the difference between the QDA221503 and the QBA221503?
The difference is the interrupting rating. The QDA221503 is rated for 25 kAIC at 240V, while the QBA221503 is rated for 10 kAIC at 240V. Both share the same 150A rating, 2-pole configuration, and BA phase connection.
How can I manually test the tripping mechanism on the QDA221503?
You can manually test the mechanism using the integral push-to-trip button located on the front cover of the breaker. This allows you to verify the mechanical operation of the trip unit safely.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
Total 5 star reviews: 6 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
6 reviews
- CBCarl B.Verified BuyerReviewingSquare D QDA32125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26Sq. D I-line
Price was fair for these New Breakers. More importantly, is the avaiability and not having to deal with long lead times
- CSClaus S.Verified BuyerReviewingSquare D QDA32100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26100A 3 phase Breaker
Priced right and shipping was really Quick. I will use them again!!
- CGChase G.ReviewingSquare D QDA32150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/16/22Always have what I need
5 stars Super Breaker always has what I need, and at a good price.
- CGChristopher G.ReviewingSquare D QDA32100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/11/21speedy service. great quality
speedy service. great quality
- RSRandy S.ReviewingSquare D QDA32225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/19Super
Quick Shipping and great price