{"product_id":"eaton-kd3400w-400a-600v-3-pole-bolt-on-circuit-breaker","title":"Eaton KD3400W - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton KD3400W is a rugged, bolt-on molded case circuit breaker designed to safeguard your panelboards and load centers with decisive, reliable protection. With a 400 A rating and 600 V capacity, this 3-pole device is built to handle demanding branch circuits in residential, commercial, and light industrial environments.\u003c\/p\u003e \u003ch3\u003eKey advantages that keep circuits safe and steady\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e for a rigid, vibration-resistant bus connection that minimizes movement, arcing, and connection fatigue in demanding installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection across temperature changes, responding quickly to overloads and short circuits to prevent equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e ideal for 3-phase systems, enabling reliable protection for larger motors, feeders, and distributed loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e compatibility with matching Eaton OEM load centers and panelboards, ensuring a seamless, trouble-free replacement or upgrade.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suited for residential, commercial, and light industrial settings where dependable branch-circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart Number: KD3400W\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 \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cp\u003eUse the KD3400W in service panels and distribution boards where robust 3-phase protection is needed. It’s well-suited for protecting large motors, three-phase feeders, and critical branch circuits in commercial spaces, light industrial facilities, and multi-residence buildings. When reliability and ease of installation matter, this bolt-on breaker provides a dependable, maintenance-friendly solution.\u003c\/p\u003e \u003ch3\u003eWhy this matters for you\u003c\/h3\u003e\n\u003cp\u003eChoosing the KD3400W means prioritizing long-term reliability and safety. The secure mounting minimizes vibration-induced issues, while the thermal-magnetic trip unit delivers consistent performance that electricians can trust under varying environmental conditions. If you’re upgrading or replacing a breaker in an OEM-compatible panel, this unit is designed to fit and function as intended, reducing downtime and the complexity of panel maintenance.\u003c\/p\u003e \u003ch3\u003eWho should consider it\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical contractors working on panelboard installations or upgrades in commercial and light industrial settings\u003c\/li\u003e \u003cli\u003eFacility managers overseeing distributed electrical systems with 3-phase loads\u003c\/li\u003e \u003cli\u003eResidential developers implementing three-phase service or large motor circuits in common-area equipment\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Eaton KD3400W, you gain a trusted, purpose-built solution for protecting your critical electrical infrastructure—combining solid mechanical design, precise protection, and effortless compatibility with Eaton’s panel ecosystems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349627883682,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-kd3400w-400-a-600-v-3-pole-bolt-on-circuit-breaker-ampstate-347.webp?v=1788695564","url":"https:\/\/www.ampstate.com\/products\/eaton-kd3400w-400a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}