Free Shipping Over $99
Square D QGA221751 Molded Case Circuit Breaker
- 175A
- 2 Pole
- I-Line
Square D
QGA221751
Molded Case Circuit Breaker
Brand
Square D
SKU
QGA221751
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D QGA221751 - 175A 2 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
175A 2 Pole Molded Case Circuit Breaker
200A 2 Pole Molded Case Circuit Breaker
200A 2 Pole Molded Case Circuit Breaker
Description
Utilizing an AB phase connection, this 175-amp molded case circuit breaker ensures precise load balancing in commercial power systems. The PowerPacT Q-Frame unit delivers robust thermal-magnetic protection with a high 65kAIC rating at 240VAC. It securely installs into standard Square D I-Line panelboards and switchboards without requiring additional mounting hardware. This model acts as a modern replacement for the Q22175AB, bringing Visi-Trip visual indication to legacy installations.Specifications
| Brand | Square D |
|---|---|
| Part Number | QGA221751 |
| Series | QGA |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC |
| Frame Type | QGA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line 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 | Phase Connection: AB (Suffix '1') |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | ANCE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, Phase Connection AB, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
7 answersWhat panelboards are compatible with the QGA221751 circuit breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line plug-on connection for the line side and mechanical lugs on the load side.
What does the "G" in the QGA221751 catalog number signify?
The "G" indicates the interrupting rating of the breaker. For Square D PowerPacT Q-Frame breakers, the G rating provides a 65kA interrupting capacity at 240VAC.
What does the "1" at the end of the QGA221751 part number mean?
The "1" suffix indicates the phase connection of the breaker. For this 2-pole I-Line breaker, it specifies an AB phase connection.
How much mounting space does the QGA221751 require in an I-Line panel?
This 2-pole Q-Frame breaker requires 3 inches of mounting space, as each pole utilizes 1.5 inches of space on the I-Line bus.
What is the recommended tightening torque for the load side lugs on the QGA221751?
The load side lugs should be torqued to 247.8 lb-in (28 N.m) for the supported 4 AWG to 300 kcmil aluminum or copper conductors.
What is the difference between the QGA221751 and the QJA221751?
The difference is the interrupting rating. The QGA221751 has a 65kAIC rating at 240VAC, while the QJA221751 has a higher 100kAIC rating at 240VAC. Both are 175A, 2-pole I-Line breakers with an AB phase connection.
Can I use the QGA221751 to replace a QDA221751 or QBA221751?
Yes, the QGA221751 shares the same physical dimensions and mounting style, but offers a higher interrupting rating (65kAIC) compared to the QDA (25kAIC) and QBA (10kAIC) models. It is a direct, higher-rated replacement.
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.