Siemens MPP2125KH Molded Case Circuit Breaker
- 125A
- 2 Pole
- Plug-On
Quantity
Siemens MPP2125KH - 125A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built to handle primary service entrance duties, this 125-amp, two-pole main breaker delivers comprehensive thermal-magnetic protection for residential applications. The plug-on device integrates seamlessly into Murray Rock Solid load centers, utilizing a four-space configuration for secure mounting. Rated for a 22kA interrupting capacity at 120/240VAC, it easily manages high fault currents while maintaining an HACR certification. This model can be substituted with the Siemens QPH2125 if needed.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MPP2125KH-R |
| Series | MPP |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Murray Rock Solid Load Centers |
| Wire Gauge | 4 AWG - 2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker, 4-Space Footprint, HACR Rated, High Interrupting Capacity |
Product FAQs
6 answersHow many panel spaces does the MPP2125KH require?
Due to its cross-over design, this breaker requires four full-size panel spaces (two adjacent and two opposite) for proper installation in a load center.
Can the MPP2125KH be used as a main breaker?
Yes, it is commonly used as a replacement main breaker in older-style Murray load centers or as a high-amperage branch breaker. Newer Rock Solid load centers typically require a dedicated main breaker kit instead.
Is the Siemens MPP2125KH a direct replacement for Murray panels?
Yes. Siemens phased out the Murray brand and continues to manufacture the MPP2125KH as a direct, UL-listed replacement for the original Murray catalog number, ensuring full compatibility with Murray Rock Solid load centers.
Does this breaker support series combination ratings?
Yes, when used as a main breaker, its 22kAIC interrupting capacity allows for series combination ratings with approved 10kAIC Siemens or Murray branch breakers, such as QP, QT, or QPF types.
Does this breaker require bolt-on hardware for installation?
No, the MPP2125KH features a plug-in connection design that snaps directly onto the bus bars of compatible load centers, eliminating the need for mounting bolts or screws.
Does the MPP2125KH feature a common trip mechanism?
Yes, this 2-pole breaker features an internal common trip mechanism. If one pole trips due to an overcurrent or short circuit, both poles will disconnect simultaneously to ensure circuit safety.
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