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Square D QGA221254 Molded Case Circuit Breaker
- 125A
- 2 Pole
- I-Line
Square D
QGA221254
Molded Case Circuit Breaker
Brand
Square D
SKU
QGA221254
Quantity
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Square D QGA221254 - 125A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial applications, the Square D QGA221254 is a 2-pole, 125A molded case circuit breaker from the PowerPacT Q-Frame family. It provides reliable thermal-magnetic protection for 240VAC systems. This unit installs into Square D I-Line panelboards and switchboards, serving as a drop-in replacement for legacy Q22125 breakers. Rated for a robust 65kA interrupting capacity, it features a BC phase connection, standard lug terminals, and a Visi-Trip indicator for rapid fault ID.Specifications
| Brand | Square D |
|---|---|
| Part Number | QGA221254 |
| Series | QGA |
| Amperage | 125A |
| 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 |
| 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 | BC Phase Connection (Suffix 4) |
| 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, Non-Interchangeable Trip, 80% Rated |
Product FAQs
8 answersWhat type of panelboards accept the QGA221254 circuit breaker?
This unit is designed exclusively for Square D I-Line panelboards and switchboards. It will not fit in standard QO, Homeline, or NQ load centers.
Can this breaker replace older legacy Square D models?
Yes, the PowerPacT Q-Frame series serves as a direct drop-in replacement for legacy Square D Q22125 breakers previously used in I-Line panelboards.
What does the G in the QGA221254 catalog number indicate?
In the PowerPacT Q-Frame nomenclature, the G designates the interrupting rating tier. It signifies that the breaker is rated for a 65kA interrupting capacity at 240VAC.
Are the trip settings adjustable on this model?
No. This breaker features a fixed thermal-magnetic trip unit. Both the long-time and instantaneous trip functions are factory set and cannot be adjusted in the field.
How does the I-Line mounting system work on this breaker?
The line side features plug-on jaws that attach directly to the I-Line bus assembly, while the load side utilizes standard mechanical lugs for wire termination.
What wire sizes are compatible with the load side lugs?
The factory-installed box lugs accept 4 AWG to 300 kcmil copper or aluminum conductors.
What does the 4 at the end of the part number signify for installation?
The suffix 4 indicates a BC phase connection. The plug-on jaws are factory configured to connect specifically to the B and C phases of the panelboard bus.
Are there alternative Q-Frame breakers with different interrupting ratings?
Yes. If your fault current requirements differ, you can use the QBA221254 for 10kA, the QDA221254 for 25kA, or the QJA221254 for 100kA applications.
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