Free Shipping Over $99
Square D QBA220704 Molded Case Circuit Breaker
- 70A
- 2 Pole
- I-Line
Square D
QBA220704
Molded Case Circuit Breaker
Brand
Square D
SKU
QBA220704
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D QBA220704 - 70A 2 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
100A 2 Pole Molded Case Circuit Breaker
100A 2 Pole Molded Case Circuit Breaker
100A 2 Pole Molded Case Circuit Breaker
Description
Part of the PowerPacT Q-Frame series, the Square D QBA220704 MCCB handles robust power distribution in commercial and industrial facilities. It delivers dependable thermal-magnetic protection for demanding electrical loads. Engineered for seamless integration, this breaker mounts into Square D I-Line panelboards and switchboards. It utilizes a BC phase connection and acts as a substitute for QDA220704 and legacy Q22070 models.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBA220704 |
| Series | QBA |
| Amperage | 70A |
| 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 |
| 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, NOM-003-SCFI, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Phase Connection BC, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
8 answersWhat panelboards accept the QBA220704 circuit breaker?
This PowerPacT Q-frame breaker is designed specifically for Square D I-Line panelboards and switchboards. It utilizes an I-Line plug-on connection for the line side and cannot be used in standard load centers or unit-mount applications.
What phase connection does the QBA220704 utilize?
This specific 2-pole breaker is configured for a BC phase connection on the I-Line bus.
Can the QBA220704 replace legacy Square D breakers?
Yes, the PowerPacT Q-frame is a direct replacement for the obsolete Square D Q2 series. The QBA220704 directly replaces the legacy Q22070 model, provided a 10kAIC rating meets your system requirements.
How does the QBA220704 differ from the QDA220704?
Both are 70A, 2-pole I-Line breakers with a BC phase connection. The primary difference is the interrupting rating. The QBA220704 is rated at 10kAIC at 240VAC, while the QDA220704 provides a higher 25kAIC rating.
What wire sizes and materials are compatible with the load lugs?
The factory-installed load-side mechanical lugs accept either copper or aluminum conductors ranging from 4 AWG to 300 kcmil.
Does the QBA220704 require a separate mounting bracket?
No. The breaker features an integrated I-Line mounting bracket that plugs directly into the panelboard bus, eliminating the need for additional mounting hardware.
What type of protection does the trip unit provide?
The breaker uses a fixed thermal-magnetic trip unit (LI). The thermal component provides long-time protection against overloads, while the magnetic component offers instantaneous protection against short circuits.
Is this breaker HACR rated for HVAC equipment?
Yes, the QBA220704 is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration circuits.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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
Search
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!