Free Shipping Over $99
Square D QGA221504 Molded Case Circuit Breaker
- 150A
- 2 Pole
- I-Line
Square D
QGA221504
Molded Case Circuit Breaker
Brand
Square D
SKU
QGA221504
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D QGA221504 - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
150A 2 Pole Molded Case Circuit Breaker
175A 2 Pole Molded Case Circuit Breaker
175A 2 Pole Molded Case Circuit Breaker
Description
Built for heavy-duty commercial distribution, this 150A thermal-magnetic breaker provides reliable long-time and instantaneous trip functions. The Q-Frame device is specifically configured with a BC phase connection for balanced load management. It mounts into Square D I-Line panelboards, including HCN, HCM, HCW, and HCWM series enclosures. Serving as a functional substitute for the older Q22150, it includes Visi-Trip technology for rapid fault identification and is fully HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | QGA221504 |
| Series | QGA |
| Amperage | 150A |
| 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 (HCN, HCM, HCW, HCWM), Square D I-Line 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, 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, Phase Connection BC, 80% Rated |
Product FAQs
8 answersHow much mounting space does the QGA221504 require in a Square D I-Line panelboard?
The QGA221504 is a 2-pole Q-frame breaker that requires 3 inches of mounting space (1.5 inches per pole) on an I-Line bus.
What does the "4" at the end of the QGA221504 catalog number indicate?
The "4" suffix indicates the breaker is configured for a BC phase connection on the I-Line bus. If your installation requires a different phase connection, you would need a different suffix, such as "1" for AB phase (QGA221501) or "2" for AC phase (QGA221502).
How does the QGA221504 connect to the panelboard bus?
The QGA221504 features an I-Line plug-in mounting style. The line side of the breaker snaps directly onto the panelboard bus stack using specialized jaws, eliminating the need for bolted bus connections and speeding up installation.
Is the QGA221504 rated for 100 percent continuous operation?
No, standard Square D Q-frame breakers like the QGA221504 are 80 percent rated. Per the National Electrical Code (NEC), continuous loads should not exceed 80 percent of the breaker's 150A rating, which equals a 120A maximum continuous load.
Can the QGA221504 replace an older Q22150 breaker?
Yes, the QGA221504 serves as a functional replacement for the obsolete Square D Q22150. Both are 150A, 2-pole I-Line breakers, but the QGA series features updated PowerPacT technology and a 65kA interrupting rating at 240V.
Is the QGA221504 suitable for use with HVAC equipment?
Yes, Square D PowerPacT Q-frame breakers, including the QGA221504, are HACR rated. This means they are approved for use with heating, air conditioning, and refrigeration equipment that requires multi-motor and combination load protection.
What size wire can be used with the QGA221504 lugs?
The factory-installed load lugs on the QGA221504 accept conductors ranging from 4 AWG to 300 kcmil. Ensure you follow NEC guidelines for proper wire sizing based on the 150A rating and terminal temperature limits.
Can I adjust the trip settings on the QGA221504?
No, the QGA221504 features a fixed thermal-magnetic trip unit. Both the long-time (overload) and instantaneous (short-circuit) trip functions are factory-set and non-adjustable.
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.