{"product_id":"siemens-mfmg-125a-3p-circuit-breaker","title":"Siemens MFMG 125A 3P Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens MFMG 125A 3P Circuit Breaker, available from AmpState, is built for everyday electrical work and trusted to protect panelboards, load centers, and electrical distribution networks. With a direct part-number match in mind, this breaker simplifies stocking and maintenance for professionals who rely on precise, compatible components.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e delivers reliable protection for 3-phase circuits, helping to safeguard equipment and ensure stable operation in commercial and industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e125 A rating\u003c\/strong\u003e provides ample headroom for higher-load panels while maintaining precise circuit protection and trip performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDirect part-number compatibility\u003c\/strong\u003e reduces search time and replacement guesswork, making it ideal for panel builders and maintenance teams who need exact Siemens MFMG family compatibility.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile installation\u003c\/strong\u003e suited for use in panelboards, load centers, and a wide range of electrical distributions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReady inventory option\u003c\/strong\u003e supports spare parts programs, service vans, and job-site readiness so you’re never left waiting for a critical component.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho this is ideal for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance teams needing dependable, exact-match replacements to minimize downtime.\u003c\/li\u003e \u003cli\u003ePanel builders who require consistent Siemens components for streamlined assembly and certification.\u003c\/li\u003e \u003cli\u003eElectrical distributors and service providers maintaining spare inventories for rapid field service.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing a worn or failed MFMG 125A 3P breaker in a three-phase panel to restore protection quickly.\u003c\/li\u003e \u003cli\u003eStocking spare units for upcoming maintenance windows, ensuring on-site readiness for urgent faults.\u003c\/li\u003e \u003cli\u003eSpecifying a compatible Siemens 3P 125A breaker for new installations that align with the MFMG family and existing panel design.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MFMG\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIf you’re unsure about compatibility or need help confirming fit, AmpState’s team is ready to assist. Send a message to verify part-number alignment with your panelboard, load center, or distribution setup—and ensure you’re selecting the exact Siemens MFMG breaker your project requires.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46413007126690,"sku":"MFMG","price":1212.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/siemens-mfmg-125a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}