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Siemens QE120 GFEP Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Siemens
QE120
GFEP Miniature Circuit Breaker
Brand
Siemens
SKU
QE120
Quantity
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Siemens QE120 - 20A GFEP Miniature Circuit Breaker
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Description
Engineered for reliable equipment protection, the Siemens QE120 is a 20A, single-pole miniature breaker. It utilizes a 30mA ground-fault trip threshold to defend machinery and heat trace cables against line-to-ground faults, avoiding the nuisance tripping of standard 5mA personnel GFCIs. This plug-on device mounts into Siemens load centers and P1 panelboards. It is replaced by the Q120EG in newer installations. Rated for 10kAIC at 120VAC, this breaker includes a pigtail neutral.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QE120 |
| Series | QE |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Siemens P1 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 10 AWG (Cu), 8 AWG (Al) |
| 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 | Pigtail Neutral |
| Standards | CSA C22.2 No. 5, UL 489, UL 1053 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Equipment Protection |
Product FAQs
7 answersWhat is the ground fault trip threshold for the QE120?
The QE120 has a 30mA trip threshold [1.1.1]. It is designed for Ground Fault Equipment Protection (GFEP), which prevents nuisance tripping in machinery and heat trace cables compared to a standard 5mA Class A personnel GFCI.
What is the primary difference between Siemens QE and QPF series breakers?
The QE series provides 30mA equipment protection, whereas the QPF series provides 5mA Class A personnel protection. The QE120 must not be used in locations where local codes specifically require 5mA personnel protection.
Which load centers and panels accept the QE120?
This device mounts into standard Siemens load centers and Siemens P1 panelboards. It requires a single 1-inch pole space and uses a plug-on connection to the bus bar.
How does the pigtail neutral wire connect during installation?
The attached pigtail wire must be terminated directly to the neutral bus bar in the panel. This connection powers the internal electronics and provides the necessary reference for the ground fault sensing circuitry.
Is this breaker suitable for heat trace and snow melting cables?
Yes. The 30mA equipment protection trip level is commonly specified for de-icing and heat trace applications to provide fault protection without the frequent nuisance tripping associated with highly sensitive personnel GFCIs.
Does the QE120 include Arc Fault Circuit Interrupter (AFCI) functionality?
No. The QE120 is solely a Ground Fault Equipment Protection (GFEP) breaker. It does not contain arc fault detection circuitry.
Can this breaker replace older ITE or Gould ground fault breakers?
Yes. Siemens acquired the ITE and Gould electrical divisions. The current QE and QP product lines are the direct, manufacturer-approved replacements for standard 1-inch plug-on ITE and Gould breakers of the same frame size.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- RWRon W.ReviewingSiemens QE120 - 20A GFEP Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/12/21Seimens 20 amp
Breaker powered on as it should.