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Square D QOB315EPD GFEP Miniature Circuit Breaker
- 15A
- 3 Pole
- Bolt-On
Square D
QOB315EPD
GFEP Miniature Circuit Breaker
Brand
Square D
SKU
QOB315EPD
Quantity
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Square D QOB315EPD - 15A GFEP Miniature Circuit Breaker
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15A GFEP Miniature Circuit Breaker
15A GFEP Miniature Circuit Breaker
Description
Part of the QO family, this 15-amp, three-pole breaker delivers 30mA ground fault equipment protection for 240VAC commercial systems. It is specifically calibrated to protect heat tracing, snow melting, and industrial machinery from damaging ground faults without the nuisance tripping associated with 5mA personnel devices. The robust bolt-on configuration installs into Square D NQ and NQOD panelboards. It comes equipped with a pigtail neutral and the highly visible Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | QOB315EPD |
| Series | QOB |
| Amperage | 15A |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
| Accessories | Pigtail Neutral, Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, Equipment Protection Device (30mA) |
Product FAQs
5 answersWhich panelboards are compatible with the QOB315EPD?
This bolt-on circuit breaker is designed exclusively for use in Square D NQ and NQOD panelboards. It will not fit in standard QO load centers, which require plug-on breakers.
What does the EPD designation mean on this breaker?
EPD stands for Equipment Protection Device. It provides a 30mA ground fault trip threshold designed to protect machinery and equipment, such as heat trace systems, from damage while preventing nuisance tripping. It is not a Class A GFCI for personnel protection.
How many pole spaces does the QOB315EPD require in a panel?
This is a 3-pole breaker that occupies three standard 3/4-inch spaces in an NQ or NQOD panelboard, requiring a total width of 2.25 inches.
How is the neutral connected on this breaker?
The QOB315EPD features a pigtail neutral wire. This wire must be securely connected to the neutral bar in the panelboard for the ground fault equipment protection circuitry to function properly.
Can I use this breaker to replace a standard QOB315?
Yes, if your application requires adding 30mA equipment ground fault protection. It has the same physical footprint and bolt-on mounting as a standard 3-pole 15A QOB breaker, but requires a connection to the panel neutral.
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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.
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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