{"product_id":"eaton-hld3400y-400a-600v-3-pole-bolt-on-circuit-breaker","title":"Eaton HLD3400Y - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton HLD3400Y is a robust 400A, 600V, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to withstand demanding electrical environments, this unit blends precise protection with solid, durable construction that electricians can trust.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e ensures a rigid, vibration-resistant bus connection, reducing the risk of loose connections in dynamic installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection performance across varying load conditions, helping prevent nuisance trips while guarding your circuits from faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to work with matching OEM loadcenters and panelboards, streamlining replacements and upgrades without compatibility concerns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial electrical environments that require reliable 400A protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe HLD3400Y is a \u003cstrong\u003ethree-pole\u003c\/strong\u003e device, purpose-built for \u003cstrong\u003ebranch circuit overcurrent and short-circuit protection\u003c\/strong\u003e. Its bolt-on design is ideal for panelboards and loadcenters where a solid, secure connection is essential in installations that experience vibrations or movement.\u003c\/p\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 HLD3400Y\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 600V\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\u003eWhy electricians choose the Eaton HLD3400Y\u003c\/h2\u003e\n\u003cp\u003eWhen upgrading panels or configuring new installations, this breaker provides a reliable, long-term protection solution that stands up to real-world conditions. Its bolt-on design minimizes movement-induced wear, while the thermal-magnetic trip mechanism offers predictable performance—critical for systems that must stay safe and compliant under load spikes. For projects requiring OEM-compatible components, the HLD3400Y delivers a seamless fit with matching loadcenter and panelboard families, reducing install time and compatibility risk.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading residential service panels to enhance feeder protection for high-load appliances or multi-zone circuits.\u003c\/li\u003e \u003cli\u003eCommercial electrical rooms needing dependable 400A protection for subpanels and critical branch circuits.\u003c\/li\u003e \u003cli\u003eLight industrial applications where vibration resistance and robust, repeatable protection are priorities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Eaton HLD3400Y, you’re choosing a proven, purpose-built solution for hard-working electrical environments. Its combination of secure mounting, reliable thermal-magnetic protection, and OEM compatibility translates into fewer call-backs, quicker installs, and safer, more dependable power distribution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349606125730,"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_d0bcb792-6846-4f6d-b157-0eabffe9da5f.png?v=1764151082","url":"https:\/\/www.ampstate.com\/products\/eaton-hld3400y-400a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}