{"product_id":"eaton-hkd3125-125a-600v-3-pole-circuit-breaker","title":"Eaton HKD3125 - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Eaton HKD3125 — a 125 A, 600 V, 3‑pole molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short‑circuit protection in panelboards and loadcenters. Built with a compact profile, it helps you maximize valuable panel space without sacrificing protection or performance.\u003c\/p\u003e \u003cp\u003eThe thermal‑magnetic trip unit provides stable, repeatable protection across a range of operating conditions. That means fewer nuisance trips and reliable response to both overloads and short circuits, so sensitive equipment and wiring stay safeguarded over the long term.\u003c\/p\u003e \u003ch2\u003eWhy the HKD3125 stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded‑case design\u003c\/strong\u003e minimizes panel depth and frees up space for easier wiring and future expansion.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal‑magnetic trip\u003c\/strong\u003e delivers predictable protection, balancing fast response to short circuits with consistent overload protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3‑pole configuration\u003c\/strong\u003e ensures simultaneous disconnection of all poles for balanced protection and safer de‑energization in faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e125 A rating\u003c\/strong\u003e supports larger branch circuits, reducing the need for multiple smaller breakers and simplifying panel planning.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V rating\u003c\/strong\u003e makes it suitable for a broad range of commercial and light industrial applications, including multi‑load panels and distributed systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM‑level compatibility\u003c\/strong\u003e is designed to work with matching Eaton OEM loadcenters and panelboards, easing replacement and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted performance\u003c\/strong\u003e from Eaton, a name synonymous with reliable electrical protection in panels and enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eResidential distribution panels that require robust overcurrent protection for high‑demand circuits.\u003c\/li\u003e \u003cli\u003eCommercial network panels and service equipment where space management and dependable protection are priorities.\u003c\/li\u003e \u003cli\u003eLight industrial control panels and equipment enclosures needing a durable, high‑amperage, 3‑pole breaker.\u003c\/li\u003e \u003cli\u003eRetrofit or replacement projects where OEM compatibility simplifies upgrades and reduces downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical details and tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eUse in applications demanding reliable branch circuit protection and quick disconnection during fault conditions.\u003c\/li\u003e \u003cli\u003eVerify compatibility with your specific OEM loadcenter or panelboard to ensure full interoperability and uninterrupted protection.\u003c\/li\u003e \u003cli\u003eWhen replacing an existing unit, check the amperage rating, voltage rating, and pole configuration (125 A, 600 V, 3‑pole) to match the HKD3125 specifications.\u003c\/li\u003e \u003cli\u003eFollow all standard electrical safety practices during installation, including de‑energizing the panel and using proper personal protective equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical specifications at a glance\u003c\/h2\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 HKD3125\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 Rating:\u003c\/strong\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short‑circuit protection in panelboards and loadcenters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349600882850,"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_8ba1b822-fef2-4a42-a990-c690a8c78af1.png?v=1764150977","url":"https:\/\/www.ampstate.com\/products\/eaton-hkd3125-125a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}