{"product_id":"siemens-fj3a225-circuit-breaker","title":"Siemens | FJ3A225 | Circuit Breaker | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens FJ3A225 3-Pole Circuit Breaker—a purpose-built solution for maintenance, retrofit, and replacement projects where exact compatibility matters. This 3-pole design provides comprehensive protection for three-phase electrical systems, helping keep critical equipment safe while preserving the integrity of your panel’s protection scheme.\u003c\/p\u003e \u003ch3\u003eKey advantages of the Siemens FJ3A225 3-Pole Circuit Breaker\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e ensures simultaneous disconnection of all live conductors in a three-phase circuit, improving safety and ensuring proper fault clearing across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility reference\u003c\/strong\u003e—the part number FJ3A225 is your most reliable guide for matching specifications, making it ideal for maintenance, retrofit, and replacement work.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConsistent Siemens ecosystem\u003c\/strong\u003e—by choosing the FJ3A225, you maintain uniform trip characteristics, mounting footprint, and mechanical fit with other Siemens components, reducing the risk of misalignment or mismatched protection curves.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRobust, field-ready design\u003c\/strong\u003e built to withstand regular switching and demanding environments, helping extend service life in commercial and industrial panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model matters for your project\u003c\/h3\u003e\n\u003cp\u003eWhen upgrading or maintaining panel protection, using a breaker that aligns with your existing system is critical. The Siemens FJ3A225 3-Pole Circuit Breaker delivers reliable protection while preserving panel coordination. It’s especially valuable in facilities with three-phase machinery, HVAC systems, data centers, and manufacturing lines where consistent protection across all phases is essential.\u003c\/p\u003e \u003ch3\u003eHow to verify compatibility (before ordering)\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReference the part number\u003c\/strong\u003e—FJ3A225 is the best compatibility reference for this unit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCheck fit and ratings\u003c\/strong\u003e—confirm the panel model, current rating, and interrupting capacity match your requirements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnsure pole count matches\u003c\/strong\u003e—this is a 3-Pole breaker, suitable for three-phase configurations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases and who benefits most\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical contractors performing panel retrofits or upgrades in commercial or light industrial settings.\u003c\/li\u003e \u003cli\u003eFacility maintenance teams replacing failed breakers in Siemens-compatible panels.\u003c\/li\u003e \u003cli\u003eEngineers coordinating protection devices for three-phase equipment where precise compatibility is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for procurement and installation\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eKeep the original packaging and documentation handy to confirm the exact panel series and trip rating.\u003c\/li\u003e \u003cli\u003eUse a licensed electrician for installation to ensure proper mounting, alignment, and secure connections.\u003c\/li\u003e \u003cli\u003eIf you’re unsure about compatibility, cross-reference the panel’s manufacturer catalog using the FJ3A225 part number as the definitive identifier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46426790461602,"sku":"FJ3A225","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_16d3a2fb-5d93-424c-9206-5031ec4b178f.png?v=1765492977","url":"https:\/\/www.ampstate.com\/products\/siemens-fj3a225-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}