Engineered to maintain existing residential systems, the Siemens MP115 delivers 15 amps of thermal-magnetic protection. This single-pole plug-on unit features SWD and HACR ratings for standard lighting or HVAC use. It installs into legacy Murray and Siemens load centers, offering a seamless fit for older panelboards. For modern upgrades, this model is replaced by the Q115. A standard 10kAIC rating ensures safe fault interruption. Insta-Wire connectors speed up the wiring process.
Yes, Siemens phased out the Murray brand in 2019. The official UL-listed replacement for the Murray MP115 is the Siemens Q115 (Type QP) circuit breaker.
Can I use a Siemens QP breaker to replace a Murray MP115?
Yes, Siemens Type QP breakers, such as the Q115, are the officially documented and UL-listed replacements for Murray Type MP-T breakers in Murray load centers.
What panels are compatible with the MP115 circuit breaker?
The MP115 is designed for use in legacy Murray load centers and is also compatible with Siemens PL, ES, and EQ series load centers.
What wire sizes are accepted by the MP115 terminals?
The load side lugs accept 14 to 8 AWG copper wire or 12 to 8 AWG aluminum wire for standard lighting and receptacle circuits.
Does the MP115 require a bolt-on connection?
No, this is a plug-in circuit breaker designed to snap directly onto the bus bar of a compatible load center.
Does the MP115 provide AFCI or GFCI protection?
No, the MP115 is a standard thermal-magnetic circuit breaker. It does not provide arc-fault or ground-fault protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
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