Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Square D QOB120EPD GFEP Miniature Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Square D
QOB120EPD
GFEP Miniature Circuit Breaker
Brand
Square D
SKU
QOB120EPD
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D QOB120EPD - 20A GFEP Miniature Circuit Breaker
New
Quantity
Similar Items
20A GFEP Miniature Circuit Breaker
20A GFEP Miniature Circuit Breaker
Description
Part of the QO family, this 20A, 1-pole GFEP breaker delivers specialized 30mA ground fault protection. It is engineered for commercial applications where equipment-level safety is required, such as outdoor machinery. The QOB120EPD features a bolt-on design for Square D NQ and NQOD panelboards. It includes pressure plate terminals and a pigtail neutral. Delivering a 10kAIC rating at 120VAC, it combines thermal-magnetic defense with Class B ground fault detection and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB120EPD |
| Series | QOB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Pressure Plate |
|---|---|
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed |
| Special Classification | GFEP |
|---|---|
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
| Accessories | Load Side Lugs Included, Pigtail Neutral |
| Standards | CSA C22.2 No. 144, UL 1053, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator |
Product FAQs
6 answersWhat is the difference between this EPD breaker and a standard GFCI?
This EPD (Equipment Protection Device) breaker has a 30mA ground fault trip threshold designed strictly to protect equipment. Standard Class A GFCI breakers trip at 5mA to provide personnel protection.
What are typical applications for a 30mA GFEP breaker?
A 30mA ground fault equipment protection (GFEP) breaker is commonly specified by the NEC for outdoor heat trace cables, roof and pipe snow melting systems, and dedicated well pumps. It prevents equipment damage from line-to-ground faults without the nuisance tripping commonly associated with 5mA GFCI devices.
Can the QOB120EPD be installed in a Square D QO residential load center?
No. The QOB120EPD features a bolt-on mounting clip designed exclusively for commercial Square D NQ and NQOD panelboards. For standard plug-on QO load centers, the correct equivalent part number is QO120EPD.
How is the neutral connection handled during installation?
This breaker relies on a factory-installed pigtail neutral wire. The coiled white wire must be routed and terminated directly to the panelboard neutral bar to ensure the internal ground fault sensing circuitry receives a reference and operates correctly.
Is there a version of this breaker with a higher interrupting rating?
Yes. The QOB120EPD offers a standard 10kAIC rating. If your panel requires a higher short-circuit current rating, the QOB120VHEPD is the direct equivalent rated for 22kAIC at 120VAC.
Does this ground fault breaker feature a Visi-Trip indicator?
Yes. When the breaker trips due to an overload, short circuit, or ground fault, the handle snaps to a center position and a bright red Visi-Trip flag appears in the indicator window for fast identification in the panelboard.
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 205 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 3/11/26
Customers say these electrical breakers arrive exactly as ordered and work perfectly for their intended applications. They consistently praise the competitive pricing, which many report is significantly lower than local suppliers. Fast shipping and prompt delivery are frequently highlighted, with many receiving orders within days or even next-day delivery for urgent needs. The breakers arrive well-packaged and in excellent condition. Many reviews emphasize the company's extensive inventory availability, particularly for hard-to-find breakers. One customer experienced difficulty with order cancellation and was charged a restocking fee, which caused dissatisfaction.
Search
Rating
205 reviews
- BLBOOSTIX L.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/17/26QOB220
That's nice breakers!
- PHPaul H.Verified BuyerReviewingSquare D QOB330 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/26Quick shipping and delivery
Shipped and delivered on time for installation at one of our projects. Thank you!
- RMRick M.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Project Mgr
Just what I needed.
- DHDoug H.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Square D QOB breakers
As always, our order arrived timely, and accurate. You can’t beat their prices that’s why we have used this company for years.
- RKRyan K.Verified BuyerReviewingSquare D QOB230VH - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/1/26Awesome
Worked great