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Siemens / Murray MP120GF GFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Siemens / Murray
MP120GF
GFCI Miniature Circuit Breaker
Brand
Siemens / Murray
SKU
MP120GF
Quantity
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Siemens / Murray MP120GF - 20A GFCI Miniature Circuit Breaker
New
Quantity
Quantity
Siemens / Murray MP120GF - 20A GFCI Miniature Circuit Breaker
New
Quantity
| Brand | Siemens / Murray |
|---|---|
| Part Number | MP120GF |
| Series | MP |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Murray Load Centers, Siemens Load Centers |
| 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 | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 5, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | SWD Rated, HACR Rated |
Sold out
Quantity
Siemens / Murray MP120GF - 20A GFCI Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens / Murray |
|---|---|
| Part Number | MP120GF-R |
| Series | MP |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Murray Load Centers, Siemens Load Centers |
| 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 | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 5, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | SWD Rated, HACR Rated |
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Description
Built to handle 20-amp branch circuits, this ground fault interrupter delivers critical 5mA shock prevention for residential environments. It installs into legacy Murray and Siemens panelboards, offering a seamless hardware match for older infrastructure. As a direct cross-reference for the QF120A, it restores full functionality to aging electrical systems. The device utilizes a pigtail neutral wire and features a 10kA short-circuit current rating.Specifications
| Brand | Siemens / Murray |
|---|---|
| Part Number | MP120GF |
| Series | MP |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Murray Load Centers, Siemens Load Centers |
| 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 | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 5, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | SWD Rated, HACR Rated |
Product FAQs
5 answersIs the Murray MP120GF still manufactured?
No. Siemens phased out the Murray brand in 2019. The direct, UL-listed replacement for the MP120GF is the Siemens QF120A.
Can I install the Murray MP120GF in a Siemens load center?
Yes. Siemens acquired Murray and issued official substitution letters confirming that Murray MP breakers are UL-listed for use in Siemens load centers that accept 1-inch plug-on breakers.
What level of ground fault protection does the MP120GF provide?
This breaker provides Class A ground fault protection. It is designed to trip when a ground fault of 5mA is detected, protecting personnel from electrical shock in wet locations.
How is the pigtail neutral wired on the MP120GF?
The coiled white pigtail wire must be connected directly to the neutral bus bar in the panel. This connection is required to power the internal ground fault circuitry and ensure proper testing and operation.
What does the LIG trip function code indicate?
LIG stands for Long-Time, Instantaneous, and Ground Fault. The Long-Time function protects against sustained overloads, the Instantaneous function clears short circuits, and the Ground Fault function detects dangerous leakage currents.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
Total 5 star reviews: 4 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
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!