Square D QO125EPD GFEP Miniature Circuit Breaker
- 25A
- 1 Pole
- Plug-On
Quantity
Square D QO125EPD - 25A GFEP Miniature Circuit Breaker
New
Quantity
Description
Built for ground fault equipment protection, the Square D QO125EPD miniature circuit breaker is rated 25A and 120VAC. This 1-pole, single-phase QO series breaker has a 10kA interrupting rating at 120VAC. It uses plug-on mounting and a pressure plate terminal connection. The terminals accept copper wire from 14-8 AWG and aluminum wire from 12-8 AWG. It has UL and CSA approvals.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO125EPD |
| Series | QO |
| Amperage | 25A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | QO Series Load Centers |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 12 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator |
Product FAQs
7 answersWhat circuits is the Square D QO125EPD rated for?
The Square D QO125EPD is a 25A, single-pole miniature circuit breaker rated for 120VAC, single-phase service. Select it when the circuit design calls for that current rating, voltage and pole count.
How does the 10kA interrupting rating affect breaker selection?
The interrupting rating is 10kA at 120VAC. Compare this rating with the available fault current at the installation point, which must not exceed the breaker's interrupting rating.
What does GFEP protection do?
GFEP means ground-fault equipment protection. It responds to ground-fault conditions to help protect equipment, making this protection function a selection consideration for circuits requiring equipment ground-fault protection.
How does the long-time and instantaneous trip function protect a circuit?
The LI trip function combines delayed operation for sustained overcurrent with instantaneous operation for high-magnitude overcurrent. This gives the breaker separate responses to prolonged overloads and faults requiring rapid interruption.
Can I terminate copper or aluminum conductors on this breaker?
The breaker accepts copper and aluminum conductors and uses a pressure-plate terminal connection. The pressure plate clamps the conductor at the terminal, so conductor material and termination method are both relevant when planning the wiring.
How should I use the 40 °C temperature ratings when selecting this breaker?
The calibration temperature and operating temperature are both 40 °C. The calibration temperature is the reference for trip behavior, while the operating temperature guides selection for the intended installation environment.
What dimensions should I allow for when planning the assembly layout?
The breaker measures 4.10 in high, 2.90 in long and 0.70 in wide. Use these dimensions for physical space planning, including the room needed to route conductors and access the terminals.
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 4.9 out of 5 based on 291 reviews.
- CEChris E.Verified BuyerReviewingSquare D QO390 - 90A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars11/3/26Fast, clean, and functional
When you purchase something you want it to look the part and do the part. The breaker was delivered very well packaged to protect it, it was clean, and functional.
- JZJOSHUA Z.Verified BuyerReviewingSquare D QO340 - 40A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/30/26Great service
Great packaging, thanks for reaching out, will be using for future projects.
- GGGregg G.Verified BuyerReviewingSquare D QO115GFI - 15A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/27/26Quick
Super
- RJRuss J.Verified BuyerReviewingSquare D QO3100 - 100A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/22/26100 amp square d breaker
Perfect!
- VLVictoria L. T.Verified BuyerReviewingSquare D QO120PCAFI - 20A AFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/13/26SquareD 20amp break
Quick and easy from purchase to installation.