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Schneider Electric / Square D QOB320EPD GFEP Miniature Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Schneider Electric / Square D
QOB320EPD
GFEP Miniature Circuit Breaker
Brand
Schneider Electric / Square D
SKU
QOB320EPD
Quantity
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Schneider Electric / Square D QOB320EPD - 20A GFEP Miniature Circuit Breaker
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Description
Built for commercial applications, the Square D QOB320EPD delivers 30mA ground-fault equipment protection (GFEP). This 3-pole, 20A miniature circuit breaker is designed to prevent machinery damage from low-level ground faults. It mounts into Square D NQ and NQOD panelboards using a secure bolt-on connection. The pressure plate terminals accept 14-8 AWG copper or 12-8 AWG aluminum wiring. Rated for 10kA at 240VAC, it features a Visi-Trip indicator for fast identification of tripped circuits.Specifications
| Brand | Schneider Electric / Square D |
|---|---|
| Part Number | QOB320EPD |
| Series | QOB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| 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 | Padlock Attachment |
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
Product FAQs
5 answersCan I install the QOB320EPD in a standard QO load center?
No. The QOB320EPD is a bolt-on circuit breaker designed specifically for Square D NQ and NQOD panelboards. Standard QO load centers require plug-on breakers.
What does the EPD designation mean on this breaker?
EPD stands for Equipment Protection Device. It indicates the breaker includes integral ground fault protection calibrated at a 30mA trip threshold. This is designed to prevent equipment damage from low-level ground faults, rather than providing the 5mA personnel protection found in standard Class A GFCI breakers.
How many panel spaces does the QOB320EPD require?
This 3-pole miniature circuit breaker requires three standard spaces in an NQ or NQOD panelboard.
How is the neutral connection handled on the QOB320EPD?
This breaker includes a pigtail neutral wire that must be connected directly to the neutral bar in the panelboard to ensure the ground fault equipment protection functions correctly.
Does this breaker include a tripped circuit indicator?
Yes, the QOB320EPD features the Square D Visi-Trip indicator, which provides a clear visual flag when the breaker has tripped due to an overcurrent or ground fault condition.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 206 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.
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Rating
206 reviews
- KHKristopher H.Verified BuyerReviewingSquare D QOB120GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/28/26Great Price!
Great price. Fast delivery. My local electric distributor wanted double for the same breaker, so it was a no brainer to order this one. Ordered another one since with the same great service.
- 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.