{"product_id":"eaton-bj3125-125a-240v-3-pole-plug-in-circuit-breaker","title":"Eaton BJ3125 - 125 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eEaton BJ3125 is a rugged 125A, 240V, 3-pole plug-in molded case circuit breaker engineered to protect electrical systems with precision and reliability. Designed for use in panelboards and load centers, this unit delivers dependable branch circuit overcurrent and short-circuit protection while keeping installation straightforward and fast.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e for quick installation or replacement, minimizing panel downtime and keeping projects on schedule.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection. The thermal element handles overloads with predictable timing, while the magnetic component responds instantly to short circuits, helping prevent damage to wiring and connected equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design (3P)\u003c\/strong\u003e ideal for 3-phase systems, common in commercial and light industrial applications, ensuring coordinated protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e125A, 240V\u003c\/strong\u003e rating designed to handle substantial load centers and lighting\/heating circuits while fitting seamlessly into OEM panelboards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility with OEM load centers\u003c\/strong\u003e and panelboards, ensuring reliable fit and electrical coordination within established systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-in molded case construction\u003c\/strong\u003e combines durable housing with dependable electrical connections, suitable for residential, commercial, and light industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e BJ3125\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 125A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003e electricians and facilities teams rely on the BJ3125 for reliable protection in service panels, retrofit projects, and new installations where 3-phase 240V power is distributed. It’s well-suited for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eResidential multi-transformer or mixed-use panels requiring robust branch protection\u003c\/li\u003e \u003cli\u003eCommercial offices, retail spaces, and data centers with 3-phase equipment\u003c\/li\u003e \u003cli\u003eLight industrial panels that demand durable, quick-replace circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eDesigned to solve real-world problems\u003c\/h3\u003e\n\u003cp\u003eRather than a one-size-fits-all breaker, the BJ3125 delivers a precise protection profile that matches Eaton OEM panelboards, reducing miscoordination and nuisance trips. Its plug-in design shortens maintenance cycles, while the thermal-magnetic trip maintains consistent performance across temperature variations and aging components. This translates to fewer unplanned outages and more predictable electrical behavior across critical circuits.\u003c\/p\u003e \u003cp\u003eFor professionals upgrading or servicing panelboards, the BJ3125 offers a straightforward, dependable solution that keeps electrical systems protected and running smoothly. Whether you’re wiring a new commercial space or replacing a failed breaker in an existing installation, this 125A, 240V, 3-pole plug-in breaker is crafted for long-term reliability and peace of mind.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349495959714,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_be2d78b8-453b-4b7f-8a8d-f3e4e5c68f60.png?v=1764148189","url":"https:\/\/www.ampstate.com\/products\/eaton-bj3125-125a-240v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}