Eaton / Cutler-Hammer QO330EPD GFEP Miniature Circuit Breaker
- 30A
- 3 Pole
- Plug-On
Quantity
Eaton / Cutler-Hammer QO330EPD - 30A GFEP Miniature Circuit Breaker
New
Quantity
Description
Designed for Square D QO load centers and NQ panelboards, the QO330EPD delivers specialized 30mA ground fault equipment protection. This three-pole, 30A plug-on breaker is engineered to safeguard commercial and industrial machinery from damaging electrical faults. It features the exclusive Visi-Trip indicator, allowing facility managers to quickly identify a tripped circuit. With a 10kAIC rating at 240VAC, it provides reliable thermal-magnetic protection in a compact three-space footprint.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QO330EPD |
| Series | QO |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | QO Load Centers, 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 |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Common Trip |
Product FAQs
8 answersWhat does the EPD designation mean on the QO330EPD breaker?
EPD stands for Equipment Protection Device. It provides ground fault protection with a 30mA trip threshold, designed to protect equipment like heat trace cables and machinery from damaging line to ground faults.
Can the QO330EPD be used for personnel ground fault protection?
No. The 30mA trip level is specifically for equipment protection. Personnel protection requires a Class A GFCI breaker with a 5mA trip threshold.
Which panelboards are compatible with the QO330EPD?
This plug-on breaker is designed for installation in QO load centers, NQ panelboards, and legacy NQOD panelboards.
How is the neutral connection wired on this breaker?
The QO330EPD features a pigtail neutral wire that must be connected directly to the neutral bar in the panel to enable the ground fault equipment protection circuitry.
What do the LIG trip functions indicate on this breaker?
LIG stands for Long-Time, Instantaneous, and Ground-Fault. This means the breaker provides thermal overload protection, magnetic short circuit protection, and 30mA ground fault equipment protection.
What wire sizes are compatible with the terminals on this 30A breaker?
The pressure plate terminals accept 14 to 8 AWG copper conductors or 12 to 8 AWG aluminum conductors.
How much panel space is required to install the QO330EPD?
As a 3-pole QO frame breaker, it requires three standard 0.75 inch spaces in a compatible load center or panelboard.
Is this breaker suitable for 3-phase applications?
Yes, the 3-pole configuration is designed for 3-phase, 240VAC systems requiring 30A equipment ground fault protection.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 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