{"product_id":"eaton-hkd3400x-400a-600v-3-pole-bolt-on-circuit-breaker","title":"Eaton HKD3400X - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton HKD3400X, a 400 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to protect your panelboards and loadcenters from overcurrent and short-circuit events. Built for reliability in demanding environments, this device delivers steady, predictable protection where it matters most.\u003c\/p\u003e \u003ch2\u003eSecure, vibration‑resistant bolt-on mounting\u003c\/h2\u003e\n\u003cp\u003eThe HKD3400X uses a robust bolt‑on mounting design that delivers a rigid, vibration‑resistant bus connection. In spaces where equipment sees movement—think busy commercial rooms or industrial settings—this secure mounting helps prevent connection looseness and protects the integrity of your electrical network.\u003c\/p\u003e \u003ch2\u003eThermal‑magnetic protection you can trust\u003c\/h2\u003e\n\u003cp\u003eEngineered with a thermal‑magnetic trip unit, the HKD3400X offers stable, repeatable protection across a wide range of fault currents. The thermal element handles sustained overloads, while the magnetic element responds quickly to short circuits, helping minimize damage to equipment and reducing downtime.\u003c\/p\u003e \u003ch2\u003eDesigned for compatibility and broad applications\u003c\/h2\u003e\n\u003cp\u003eThis 3‑pole, molded case circuit breaker is built to pair with matching OEM loadcenters and panelboards, ensuring cohesive performance in installations that prioritize reliability and code‑conforming protection. It’s well suited for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eResidential service upgrades and multi‑load center installations\u003c\/li\u003e \u003cli\u003eCommercial electrical rooms and light industrial panels\u003c\/li\u003e \u003cli\u003eNew builds and retrofit projects where dependable branch‑circuit protection is essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\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 HKD3400X\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 400 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\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 \u003ch2\u003ePractical scenarios and tips\u003c\/h2\u003e\n\u003cp\u003eIn a three‑phase commercial panel or a multi‑meter load center, the HKD3400X ensures all phases trip together, preserving motor protection and preventing phase imbalances during faults. For residential and light industrial upgrades, it provides a durable, code‑compliant solution that reduces long‑term maintenance and replacement costs. When planning installations, align the HKD3400X with compatible OEM panels to maintain streamlined assemblies and consistent protection coordination across your electrical system.\u003c\/p\u003e \u003ch2\u003eWhy choose the Eaton HKD3400X\u003c\/h2\u003e\n\u003cp\u003eIf you need dependable, high‑current protection that stands up to vibration, heat, and daily wear, the HKD3400X delivers. Its bolt‑on architecture, thermal‑magnetic trip logic, and OEM‑friendly compatibility translate into faster installations, fewer call‑backs, and clearer protection strategies for your electrical infrastructure. For projects demanding robust, long‑lasting branch‑circuit protection in panelboards and loadcenters, this is a purpose‑built choice that aligns with professional standards and practical outcomes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349605175458,"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_20c941e1-9a51-474f-9255-be393d7ebc76.png?v=1764151059","url":"https:\/\/www.ampstate.com\/products\/eaton-hkd3400x-400a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}