Providing enhanced safety, the Siemens Murray MP250GFA operates as a 50A, two-pole GFCI breaker. It delivers 5mA Class A protection for high-draw equipment in wet locations to meet NEC standards. This plug-on breaker mounts into legacy Murray enclosures as a reliable replacement. For updated installations, it has been officially replaced by the Siemens QF250A. Rated for 10 kAIC, it includes a self-test function and a lockout feature that prevents resetting if protection is compromised.
Class A Ground Fault Protection (5mA), Self-Test, HACR Rated, Common Trip
Product FAQs
7 answers
What is the Siemens equivalent for the Murray MP250GFA?
Siemens phased out the Murray brand and lists the Siemens QF250A as the direct, UL listed replacement for this 50A, 2-pole GFCI breaker.
Can I install this Murray breaker in a Siemens load center?
Yes. Siemens acquired Murray, and their official compatibility letters confirm that Murray and Siemens breakers are interchangeable in panels manufactured after January 2002. Always verify your specific panel label for approved breaker types.
What type of ground fault protection does the MP250GFA provide?
This breaker provides Class A ground fault protection. It is designed for personnel protection and will trip to de-energize the circuit if it detects a ground fault current of 5mA or higher.
How is the neutral connection wired on this GFCI breaker?
This breaker features a pigtail neutral. The coiled white pigtail wire must be connected directly to the neutral bus bar in your load center, while the load neutral wire connects to the breaker itself.
What applications typically require a 50A, 2-pole GFCI breaker?
A 50A, 2-pole GFCI is commonly installed to meet electrical code requirements for high-current 240V outdoor or wet-location equipment, such as hot tubs, spas, and large RV receptacles.
What does the LIG trip function code mean on this breaker?
LIG stands for Long-Time, Instantaneous, and Ground-Fault. This means the thermal-magnetic trip unit provides delayed tripping for mild overloads, immediate tripping for severe short circuits, and dedicated protection against ground faults.
Does this breaker include a self-test feature?
Yes, the MP250GFA includes a self-test and lockout feature as required by UL 943 standards to ensure the ground fault circuitry is functioning properly.
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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