{"product_id":"eaton-kd3400fs","title":"Eaton KD3400FS 400A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered by Eaton, the KD3400FS 400A 3-Pole 600V Circuit Breaker delivers dependable, high-capacity protection for demanding industrial power distributions. Built to endure the rigors of continuous operation in 3-phase systems, this breaker safeguards motors, feeders, and electrical panels from overloads and short circuits, while enabling straightforward maintenance and fast reset when the fault is cleared.\u003c\/p\u003e \u003ch2\u003eKey advantages\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400 A current rating\u003c\/strong\u003e provides robust protection for high-demand circuits and large equipment loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e ensures true three-phase protection with coordinated disconnection, preserving system balance and safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V voltage capability\u003c\/strong\u003e makes it suitable for industrial power distribution environments that run on higher voltage levels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eKD3400FS part compatibility\u003c\/strong\u003e ensures reliable integration with existing Eaton panels, switchgear, and protection schemes, reducing replacement and retrofit friction.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, field-reliable performance\u003c\/strong\u003e built to withstand routine operation in commercial and industrial settings, supporting long service life in challenging environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal applications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eIndustrial facilities with three-phase power distribution, such as manufacturing lines and processing plants.\u003c\/li\u003e \u003cli\u003eLarge commercial buildings and data centers that rely on dependable 600V three-phase protection.\u003c\/li\u003e \u003cli\u003eFeeders and main distribution circuits where a single fault could impact multiple loads or motors.\u003c\/li\u003e \u003cli\u003ePanel upgrades or replacements in Eaton-compatible electrical systems, helping to maintain code-compliant protection without extensive rewiring.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical impact and use cases\u003c\/h2\u003e\n\u003cp\u003eWith the KD3400FS, you gain precise, reliable interruption of fault currents, reducing the risk of equipment damage, insulation failures, and unexpected downtime. Its 3-pole architecture ensures synchronized disconnection across all three phases, which is critical for protecting motors, drives, and other three-phase equipment. In daily operations, this translates to fewer nuisance trips, quicker fault isolation, and smoother maintenance cycles, all while keeping your power system compliant with industry standards for 600V distribution.\u003c\/p\u003e \u003ch2\u003eWhy choose this Eaton breaker\u003c\/h2\u003e\n\u003cp\u003eChoosing the KD3400FS means relying on a trusted protection solution from a legacy brand known for compatibility and predictable performance. Its design aligns with Eaton’s protection philosophy—clear, actionable protection for critical loads, straightforward installation, and a strong track record in real-world industrial environments. For facilities already invested in Eaton’s ecosystem, the KD3400FS offers a seamless pathway to robust, scalable three-phase protection.\u003c\/p\u003e \u003ch2\u003eSpecifications snapshot\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e KD3400FS\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor engineers and procurement teams evaluating industrial protection, the KD3400FS 400A 3-Pole 600V Circuit Breaker stands out as a dependable, high-capacity choice that aligns with three-phase distribution needs while offering straightforward integration within Eaton-powered infrastructures.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46423334486178,"sku":"KD3400FS","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/eaton-kd3400fs","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}