A drop-in replacement for legacy residential systems, the Siemens MPP2200 is a 200-amp main breaker designed for Murray load centers and multi-family metering products. It installs into older enclosures without requiring aftermarket adapters, ensuring a safe and code-compliant service upgrade. Replaced by the modern QN2200, this exact-fit component maintains the original 10kAIC rating at 120/240V. It utilizes reliable thermal-magnetic trip technology for proven overcurrent protection.
Which load centers are compatible with the MPP2200 main breaker?
The MPP2200 is designed for use as a main breaker in legacy Murray Rock Solid load centers and compatible Siemens panels that accept MP or MPP frame types. Always verify acceptance on your panel wiring diagram.
Is the Murray MPP2200 interchangeable with Siemens breakers?
Yes. Siemens acquired Murray and phased out the brand. The MPP2200 is a direct, exact-fit replacement for older Murray 200A main breakers. In modern Siemens applications, it crosses to the QN2200 or QPP series.
Is the Murray MPP2200 obsolete?
The Murray brand name has been phased out by Siemens, but the MPP2200 is still available as an authentic replacement part manufactured by Siemens. It allows you to service legacy Murray panels without needing aftermarket adapters or panel upgrades.
What precautions should be taken when using aluminum wire with the MPP2200?
While the factory-installed lugs are rated for both copper and aluminum conductors, you must apply a listed joint compound to aluminum wires before termination. This prevents oxidation and ensures a safe, code-compliant connection.
Are the lugs included with the MPP2200 breaker?
Yes, the breaker comes with factory-installed lugs. When terminating your service conductors, ensure you torque the lugs to the exact specifications printed on the side of the breaker to prevent thermal failure.
Can the MPP2200 be used in commercial applications?
While primarily used as a main service breaker in residential single-phase systems, it can also be installed in light commercial applications that require a 200A main disconnect, provided the enclosure accepts MPP frame plug-on breakers and the available fault current does not exceed 10kA.
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