{"product_id":"eaton-lgh3400fag-400a-600v-3-pole-circuit-breaker","title":"Eaton LGH3400FAG - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton LGH3400FAG is engineered to deliver dependable protection for branch circuits in panelboards and loadcenters, combining high current capability with compact, space-efficient design. With a 400A rating and a 600V operating envelope, this 3-pole molded case circuit breaker is built to handle demanding residential, commercial, and light industrial applications with confidence.\u003c\/p\u003e \u003ch3\u003eKey features that matter in real-world panels\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes usable panel space, giving you more room for wiring and future upgrades without compromising protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection against both overload and short-circuit events, reducing nuisance trips and improving reliability over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e delivers coordinated three-phase protection where required, ensuring balanced interrupting capacity and safer operation in multi-wire systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to pair with matching Eaton OEM load centers and panelboards, simplifying selection and installation while maintaining performance parity.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application scope\u003c\/strong\u003e ideal for residential service upgrades, commercial panels, and light industrial distributions that demand robust overcurrent protection.\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 LGH3400FAG\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\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits from the Eaton LGH3400FAG\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFacilities upgrading to higher-capacity protection where space is at a premium\u003c\/li\u003e \u003cli\u003eElectrical contractors seeking reliable, manufacturer-matched breakers for Eaton panelboards\u003c\/li\u003e \u003cli\u003eMaintenance teams needing consistent, repeatable trip characteristics to minimize downtime\u003c\/li\u003e \u003cli\u003eBuilders and installers who want a unified protection solution across residential, commercial, and light industrial projects\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker makes a practical difference\u003c\/h3\u003e\n\u003cp\u003eBeyond raw specs, the LGH3400FAG delivers tangible benefits in the field. The combination of a compact form and a thermal-magnetic trip unit means you get precise protection without sacrificing panel layout. Its three-pole design supports coordinated protection in three-phase systems, reducing the risk of uneven loading and potential damage downstream. Compatibility with Eaton’s OEM load centers and panelboards simplifies stocking and installation, helping projects stay on schedule and within budget.\u003c\/p\u003e \u003ch3\u003ePractical usage and installation notes\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBest suited for panels where space optimization is critical while delivering robust protection for high-current branch circuits.\u003c\/li\u003e \u003cli\u003eEnsure replacement or backup breakers are matched to the OEM panel’s specifications to maintain protection coordination and warranty coverage.\u003c\/li\u003e \u003cli\u003eHandle and install according to standard electrical safety practices; verify that the panel’s rating and labeling align with the 400A\/600V, 3-pole configuration.\u003c\/li\u003e \u003cli\u003eConsider this breaker for scenarios requiring reliable, repeatable trip behavior in environments with varying load profiles.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Eaton LGH3400FAG when you need a proven, high-capacity, space-conscious solution that pairs seamlessly with compatible Eaton panelboards and loadcenters while delivering dependable branch circuit protection for a wide range of commercial, residential, and light industrial applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349635027106,"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_611b11ac-4d4b-4514-8030-a8c19801f6dc.png?v=1764152093","url":"https:\/\/www.ampstate.com\/products\/eaton-lgh3400fag-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}