Siemens / Murray MP120EG GFEP Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Quantity
Siemens / Murray MP120EG - 20A GFEP Miniature Circuit Breaker
New
Quantity
Description
Manufactured under the legacy Murray brand, the MP120EG is a 1-pole, 20A circuit breaker designed for equipment protection. It provides a 30mA trip threshold to prevent damage from line-to-ground faults on dedicated circuits. This plug-on breaker installs into standard Murray load centers. As a legacy component, it is officially replaced by the Siemens QE120, offering an exact fit for older panels. Rated at 10kAIC at 120VAC, it features a pigtail neutral and is HACR and SWD rated.Specifications
| Brand | Siemens / Murray |
|---|---|
| Series | MP |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | MP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Murray Load Centers, Siemens Load Centers |
| 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, HACR, SWD, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Equipment Ground Fault Protection (30mA) |
Product FAQs
5 answersWhat is the direct Siemens replacement for the Murray MP120EG?
Siemens has phased out the Murray brand and replaced the MP120EG with the Siemens QE120. The QE120 is the exact functional equivalent and is UL listed for use in the same load centers.
What is the ground fault trip threshold for the MP120EG?
As a Ground Fault Equipment Protection (GFEP) breaker, it is designed to trip at a 30mA threshold. This differs from Class A GFCI breakers, which trip at a 5mA threshold for personnel protection.
What applications typically require a 30mA GFEP breaker?
GFEP breakers protect equipment from damaging ground faults in applications where a 5mA GFCI might experience nuisance tripping. Common uses include heat tracing cables, snow melting equipment, and specific industrial machinery.
How is the neutral connection wired on the MP120EG?
This breaker features a pigtail neutral. The coiled white pigtail wire must be connected directly to the neutral bus bar in the panel to power the internal ground fault circuitry.
Can the Murray MP120EG be installed in a Siemens load center?
Yes. The MP120EG is compatible with both Murray and Siemens load centers. Siemens has officially documented that Murray MP frame breakers are UL listed for use in Siemens panels.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
- JVJulie V.Verified BuyerReviewingSiemens / Murray MP2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/5/26on breaker
so far so good on the refurbished breaker
- JFJon F.ReviewingSiemens / Murray MP250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/17/20Sales
Fantastic group to work with...
- DSDavid S.ReviewingSiemens / Murray MP2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/5/20Thank you so much for
Thank you so much for sending me a 100 amp breaker that was in the condition that you said it would be in.With out your breaker I would still be in the dark Thank you David
- RARichard A.ReviewingSiemens / Murray MP2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/13/19Awesome!
Your prices and number of available items to choose from is Awesome!