{"product_id":"eaton-dk3400w-400a-2v-3-pole-bolt-on-circuit-breaker","title":"Eaton DK3400W - 400 A, 2 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton DK3400W\u003c\/strong\u003e is a robust 400A, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to survive demanding environments, it delivers a secure, vibration-resistant connection and precise protective performance when it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that stays put in challenging installations, reducing the risk of loose connections that can compromise protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection across varying loads and ambient conditions, helping prevent nuisance trips while reliably opening on overloads or short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design for 3-phase systems\u003c\/strong\u003e and a \u003cstrong\u003e400A rating\u003c\/strong\u003e make it ideal for larger panelboards and commercial\/industrial distributions that require solid 3-phase protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e with matching Eaton loadcenters and panelboards to ensure proper fit, coordinated trip characteristics, and straightforward integration into existing equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e—suitable for residential, commercial, and light industrial environments where durable, field-installable protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits from the DK3400W?\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical contractors installing or upgrading Eaton-based panelboards and loadcenters\u003c\/li\u003e \u003cli\u003eFacilities managers overseeing service entrances, subpanels, or distributed loads in commercial spaces\u003c\/li\u003e \u003cli\u003ePanel builders and integrators seeking reliable bolt-on protection for large circuits\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain service disconnects or feeder protections in Eaton-compatible panelboards\u003c\/li\u003e \u003cli\u003eBranch circuit protection for heavy loads in commercial or light industrial settings\u003c\/li\u003e \u003cli\u003eReplacement or retrofit in existing systems that require a 400A, 3-pole, bolt-on solution\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 DK3400W\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 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 2V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-on\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\u003eInstallation \u0026amp; practical guidance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm compatibility with your OEM loadcenter or panelboard before installation to ensure coordinated protection characteristics.\u003c\/li\u003e \u003cli\u003eFollow proper bolt-on torque specifications and mounting practices to maintain a solid, vibration-resistant connection.\u003c\/li\u003e \u003cli\u003ePower down the system, verify clearance, and observe all safety protocols during installation or replacement.\u003c\/li\u003e \u003cli\u003eConsider the 3-pole configuration for balanced 3-phase protection in commercial or light industrial electrical distributions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe Eaton DK3400W is more than a breaker—it's a reliable backbone for safe, efficient power distribution. With its bolt-on durability, thermal-magnetic protection, and OEM-ready compatibility, it delivers dependable performance for large-discipline panels and demanding installations. Invest in a breaker that aligns with your Eaton ecosystem and keeps critical circuits protected.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349529415842,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-dk3400w-400-a-2-v-3-pole-bolt-on-circuit-breaker-ampstate-570.webp?v=1788679401","url":"https:\/\/www.ampstate.com\/products\/eaton-dk3400w-400a-2v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}