{"product_id":"eaton-hkd3400y-400a-600v-3-pole-bolt-on-circuit-breaker","title":"Eaton HKD3400Y - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton HKD3400Y — a 400 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built for real-world demand, it helps keep electrical systems safe, powered, and ready for growth.\u003c\/p\u003e \u003cp\u003eKey advantages you’ll notice in everyday installations:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration‑resistant bus connection, helping maintain consistent electrical contact even in environments with equipment vibration or heavy loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection against overcurrent and short-circuit faults across varying temperatures and load conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e is ideal for 3‑phase circuits, supporting larger commercial and light industrial feeders without compromising protection quality.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V rating\u003c\/strong\u003e and molded‑case construction offer reliable insulation and safety for standard commercial and industrial power distribution scenarios.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e pairs seamlessly with matching Eaton load centers and panelboards, ensuring plug‑and‑play installation and streamlined panel upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhere it fits\u003c\/h3\u003e\n\u003cp\u003eDesigned for residential, commercial, and light industrial applications, the HKD3400Y is an option for panelboards and load centers that require robust branch circuit overcurrent and short-circuit protection. It’s a practical choice when you need a high‑capacity breaker that won’t compromise on safety or reliability in demanding electrical deployments.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart Number: HKD3400Y\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 400 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose this breaker? It combines robust mechanical mounting with precise protection logic, making it a reliable choice for electricians and panel builders who value performance and consistency. When you install the HKD3400Y, you’re equipping your distribution system with a trusted Eaton solution that complements compatible panelgear and supports steady, trouble-free operation even as your electrical demands evolve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349605273762,"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_5a6e7ec1-dd0f-4222-bb0e-6d904d69fc50.png?v=1764151062","url":"https:\/\/www.ampstate.com\/products\/eaton-hkd3400y-400a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}