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Siemens MP2125 Miniature Circuit Breaker
- 125A
- 2 Pole
- Plug-On
Siemens
MP2125
Miniature Circuit Breaker
Brand
Siemens
SKU
MP2125
Quantity
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Siemens MP2125 - 125A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Siemens MP2125 - 125A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | MP2125 |
| Series | MP |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | MP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Murray Load Centers, Siemens Load Centers |
| Wire Gauge | 2-1/0 AWG (Cu), 1/0-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 2 AWG (Cu), 1/0 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
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Quantity
Siemens MP2125 - 125A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | MP2125-R |
| Series | MP |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | MP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Murray Load Centers, Siemens Load Centers |
| Wire Gauge | 2-1/0 AWG (Cu), 1/0-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 2 AWG (Cu), 1/0 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
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Description
Ideal for residential and light commercial electrical systems, this 125-amp plug-on breaker delivers essential 10kAIC interrupting capacity at 120/240VAC. The two-pole configuration utilizes proven thermal-magnetic trip technology to safeguard circuits against overloads and short circuits. It installs seamlessly into Murray and Siemens load centers, providing a secure plug-in connection. This legacy MP series unit is the predecessor to the Q2125 replacement model. HACR rated for HVAC use.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MP2125 |
| Series | MP |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | MP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Murray Load Centers, Siemens Load Centers |
| Wire Gauge | 2-1/0 AWG (Cu), 1/0-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 2 AWG (Cu), 1/0 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip |
Product FAQs
8 answersWhich load centers are compatible with the MP2125 circuit breaker?
The MP2125 is designed for use in Murray and Siemens plug-on style load centers and meter combinations that accept Type MP-T breakers.
Is the Murray MP2125 the same as the Siemens MP2125?
Yes. Siemens acquired the Murray brand and manufactured the MP2125 under both names. They are physically and electrically identical and share the same Type MP-T frame.
What is the active Siemens cross-reference for the MP2125?
Siemens has phased out the legacy Murray MP series and designates the Siemens Q2125 as the direct, UL-listed replacement for the MP2125.
What are the acceptable wire gauges for the MP2125 terminals?
The mechanical lugs accept 2 AWG to 1/0 AWG copper conductors, or 1/0 AWG to 2/0 AWG aluminum conductors.
How many panel spaces does the MP2125 occupy?
This 2-pole breaker requires two standard 1-inch panel spaces for installation.
What type of protection does the MP2125 provide?
It utilizes a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) functions to protect against both sustained overloads and sudden short circuits.
Is the MP2125 HACR rated?
Yes, the MP2125 is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration equipment circuits.
Does the MP2125 require a bolted connection?
No, the MP2125 features a plug-in connection type for standard push-on installation onto the panel busbar.
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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!