{"product_id":"eaton-hkd3125y-125a-600v-3-pole-circuit-breaker","title":"Eaton HKD3125Y - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton HKD3125Y — a rugged 125A, 600V, 3-pole molded case circuit breaker designed to protect your electrical system with precision while maximizing panel space. Engineered for dependable branch circuit overcurrent and short‑circuit protection, it’s built to perform in real-world panelboards and loadcenters across residential, commercial, and light industrial environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e optimizes interior space in panelboards, helping you fit reliable protection without crowding the enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by reacting to both overloads and short circuits with consistent timing and accuracy.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e125A, 600V, 3-pole configuration\u003c\/strong\u003e supports three-phase distribution and higher-current branches, making it suitable for larger equipment circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e designed to pair with Eaton‑brand and compatible OEM loadcenters and panelboards for a seamless, trustworthy installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e ideal for residential service enhancements, commercial panel protection, and light industrial distribution needs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart Number: HKD3125Y\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 125 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cp\u003eThe HKD3125Y is ideal for electrical installers and facility managers who need reliable, space-efficient protection for three‑phase circuits and sizable branch feeders. If you’re upgrading a panel to better safeguard critical equipment, or replacing a worn breaker in a commercial or light industrial setting, this unit delivers consistent performance and easy integration with compatible panel systems.\u003c\/p\u003e \u003ch3\u003eWhat problems it solves\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePrevents nuisance trips by offering a stable, predictable trip behavior for overloads and short circuits.\u003c\/li\u003e \u003cli\u003eConserves panel space without sacrificing protection, thanks to its compact molded case design.\u003c\/li\u003e \u003cli\u003eEnsures compatibility and streamlined installation in OEM‑matched loadcenters, reducing configuration issues.\u003c\/li\u003e \u003cli\u003eProvides robust protection for three‑phase distribution networks commonly found in commercial or light industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for use\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify the panel compatibility: ensure the HKD3125Y is suitable for your specific Eaton or OEM loadcenter to guarantee a clean fit and reliable operation.\u003c\/li\u003e \u003cli\u003eMatch protection to conductors: use within its 125 A rating for feeders and branch circuits that align with conductor sizes and enclosure capabilities.\u003c\/li\u003e \u003cli\u003eConsider three-phase requirements: the 3-pole design is ideal for protected three‑phase loads or equipment fed from a 3‑phase service.\u003c\/li\u003e \u003cli\u003eFollow standard electrical practices: install per manufacturer guidelines, maintain proper torque on lugs, and observe enclosure spacing for heat dissipation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349601144994,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hkd3125y-125-a-600-v-3-pole-circuit-breaker-ampstate-breakers-351.webp?v=1788690173","url":"https:\/\/www.ampstate.com\/products\/eaton-hkd3125y-125a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}