{"product_id":"eaton-hld3400c-400a-600v-3-pole-circuit-breaker","title":"Eaton HLD3400C - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton HLD3400C - 400 A, 600 V, 3-Pole Circuit Breaker\u003c\/strong\u003e from AmpState is a compact, molded-case breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for practical, real-world electrical protection, this unit is ideal for residential, commercial, and light industrial setups where space efficiency matters and reliability counts.\u003c\/p\u003e \u003ch2\u003eWhy this breaker stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient molded-case design:\u003c\/strong\u003e A compact footprint helps you maximize panel space without compromising protection, making it a smart choice for tight electrical layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Delivers stable, repeatable protection by responding to both overload and short-circuit conditions, minimizing nuisance trips and ensuring steady operation of connected equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-loadcenter compatibility:\u003c\/strong\u003e Engineered to be compatible with matching Eaton OEM loadcenters and panelboards, simplifying replacement, upgrades, and serviceability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple sectors:\u003c\/strong\u003e Suitable for residential service panels, commercial distribution boards, and light industrial electrical feeds where robust overcurrent protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrongtype:\u003e Thermal-magnetic molded case circuit breaker\u003c\/strongtype:\u003e\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\u003ePoles:\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 \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HLD3400C\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eFeeding large branch circuits in residential or commercial panels where a single 400 A breaker controls substantial loads.\u003c\/li\u003e \u003cli\u003eServing main feeders or subpanels within commercial spaces, storage facilities, or light manufacturing environments needing reliable protection against faults.\u003c\/li\u003e \u003cli\u003eReplacing aging or mismatched breakers in OEM loadcenters to maintain coordinated protection and consistent trip characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation \u0026amp; compatibility\u003c\/h2\u003e\n\u003cp\u003eFor best performance, pair the Eaton HLD3400C with the corresponding OEM loadcenter or panelboard designed for molded-case breakers. Before installation, verify that the panel’s rating supports a 400 A, 3-pole device and that wiring terminations meet the breaker’s torque and conductor-size requirements. The thermal-magnetic trip provides predictable responses across a range of fault currents, helping protect downstream equipment and reduce downtime due to electrical faults.\u003c\/p\u003e \u003ch2\u003eWhat problems this solves\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003ePrevents damage from overcurrent and short circuits in large branch circuits, reducing the risk of fire and equipment failure.\u003c\/li\u003e \u003cli\u003eMaximizes space efficiency in panel installations, freeing up room for future expansion or additional circuits.\u003c\/li\u003e \u003cli\u003eOffers a reliable, standardized protection solution that aligns with OEM panel architectures for streamlined maintenance and compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose Eaton HLD3400C\u003c\/h2\u003e\n\u003cp\u003eIf you need a robust, three-pole solution capable of handling substantial current while fitting neatly into compatible panelboards, the HLD3400C delivers. Its combination of compact design, dependable thermal-magnetic protection, and OEM alignment makes it a practical choice for electricians managing residential, commercial, and light industrial electrical distributions. Trust in a breaker built to protect your panels, feeds, and connected equipment with consistent performance under real-world conditions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349605896354,"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_8c0511c5-0812-4d99-ba19-9c5c7a03b3f5.png?v=1764151078","url":"https:\/\/www.ampstate.com\/products\/eaton-hld3400c-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}