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Square D QO120EPD2100 GFEP Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Square D
QO120EPD2100
GFEP Miniature Circuit Breaker
Brand
Square D
SKU
QO120EPD2100
Quantity
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Square D QO120EPD2100 - 20A GFEP Miniature Circuit Breaker
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Description
Built for commercial and industrial use, this 20A equipment protection device provides 30mA ground fault sensitivity to prevent machinery damage. It features a factory-installed 1A at 120VAC alarm switch for remote trip signaling. This plug-on breaker fits Square D QO load centers and NQ panelboards. It utilizes a pigtail neutral connection and accepts 14-8 AWG copper or 12-8 AWG aluminum conductors. Rated 10kAIC at 120VAC, it includes the Visi-Trip indicator for quick visual status.Specifications
| Brand | Square D |
|---|---|
| Series | QO |
| Amperage | 20A |
| 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 Load Centers, NQ 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 | Alarm Switch (Factory Installed), Pigtail Neutral |
| Standards | CSA C22.2 No. 144, UL 1053 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator |
Product FAQs
7 answersWhat panels are compatible with the QO120EPD2100 circuit breaker?
This plug-on breaker is designed for use in Square D QO load centers and NQ panelboards. It is not compatible with Homeline panels or bolt-on QOB applications.
What does the EPD designation mean on this Square D breaker?
EPD stands for Equipment Protection Device. It provides 30mA ground fault sensitivity, also known as Class B protection, to prevent machinery and equipment damage. This is a higher trip threshold than the 5mA sensitivity found in standard Class A GFCI breakers used for personnel protection.
What feature does the 2100 suffix indicate on the QO120EPD2100?
The 2100 suffix indicates that the breaker includes a factory-installed alarm switch. This auxiliary switch provides remote signaling to alert operators or monitoring systems when the breaker has tripped.
How is the neutral connected on the QO120EPD2100?
This breaker utilizes a pigtail neutral connection. The coiled white wire must be connected directly to the panel neutral bus bar to ensure the ground fault equipment protection functions correctly.
What wire sizes are accepted by the terminals on this 20A EPD breaker?
The pressure plate terminals accept 14 AWG to 8 AWG copper conductors or 12 AWG to 8 AWG aluminum conductors.
Does the QO120EPD2100 feature a tripped circuit indicator?
Yes, it includes the Square D Visi-Trip indicator. When the breaker trips due to an overcurrent or ground fault, a highly visible red indicator appears in the window to help quickly identify the tripped circuit.
Can I use the QO120EPD2100 in place of a QO120GFI?
No. The QO120EPD2100 is a 30mA equipment protection device, while the QO120GFI is a 5mA Class A ground fault circuit interrupter designed for personnel protection. They serve different safety purposes and are not interchangeable for code-required GFCI applications.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 285 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 6/13/26
Customers say these circuit breakers arrive quickly and work as described. Fast shipping and competitive pricing are frequently mentioned, with many noting same-day or next-day delivery. Users appreciate the wide inventory, particularly for hard-to-find older-style models unavailable locally. The products function reliably and arrive in good condition. Most customers report straightforward ordering and positive interactions. However, some experienced delivery delays or received incorrect items requiring reordering. A few noted concerns about condition upon arrival or customer service responsiveness.
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Rating
285 reviews
- GCGerard C.Verified BuyerReviewingSquare D QO130GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Great !
I could not find the breaker in hardwood stores. Superbreakers took car of it in a week.
- RHRoy H.Verified BuyerReviewingSquare D QO280 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26Square D QO280 - 80A 2 Pole Miniature Circuit Breaker
Exactly as described
- KWKevin W.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Great Price
Brand spanking new!
- CEchristopher e.Verified BuyerReviewingSquare D QO115PDF - 15A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26My breakers
Had a hard time locating these breakers locally, when I did find 1 they wanted to charge me triple what superbreakers charged. Items delivered exactly when they said they would, were exactly what I ordered. Appreciated the ease of ordering, definitely my go to from this point on
- JCJerry C.Verified BuyerReviewingSquare D QO250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26Great quality
No issues