{"product_id":"square-d-la9d511-circuit-breaker","title":"Square D LA9D511 - Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the \u003cstrong\u003eSquare D LA9D511\u003c\/strong\u003e molded case circuit breaker—a dependable, compact protection device engineered for branch circuits in panelboards and loadcenters. Designed for \u003cstrong\u003eresidential, commercial, and light industrial\u003c\/strong\u003e environments, it delivers reliable overcurrent and short-circuit protection when and where you need it.\u003c\/p\u003e \u003ch2\u003eWhy the Square D LA9D511 Stands Out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-conscious molded case design\u003c\/strong\u003e that maximizes panel space and keeps your enclosure tidy, making room for essential circuits without sacrificing safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection across a range of loads, responding quickly to short circuits while avoiding nuisance trips from minor surges.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible construction\u003c\/strong\u003e designed to pair with matching Square D loadcenters and panelboards, ensuring consistent performance and straightforward replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across environments\u003c\/strong\u003e from home subpanels to light commercial electrical rooms, delivering dependable protection where it matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow it Protects Your Circuits\u003c\/h2\u003e\n\u003cp\u003eThe LA9D511 guards against dangerous overcurrent conditions that can damage conductors and devices. Its \u003cstrong\u003ethermal-magnetic trip unit\u003c\/strong\u003e automatically flags abnormal heat buildup or excessive current, opening the circuit to prevent insulation damage, fire risk, and equipment failure. This design delivers \u003cstrong\u003estable trip characteristics\u003c\/strong\u003e even as ambient temperatures vary or loads shift throughout the day.\u003c\/p\u003e \u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eResidential panelboards and subpanels protecting branch circuits from overloads\u003c\/li\u003e \u003cli\u003eCommercial service panels in small offices or retail spaces\u003c\/li\u003e \u003cli\u003eLight industrial electrical installations requiring dependable short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCompatibility \u0026amp; Installation Tips\u003c\/h2\u003e\n\u003cp\u003eChoose the \u003cstrong\u003eLA9D511\u003c\/strong\u003e for systems that require a \u003cstrong\u003emolded case circuit breaker with a thermal-magnetic trip\u003c\/strong\u003e. It is designed to be \u003cstrong\u003ecompatible with matching OEM loadcenters and panelboards\u003c\/strong\u003e, simplifying substitution within established electrical architectures. When installing or replacing breakers, confirm that the replacement part matches the panelboard's family and circuit rating, and ensure secure mounting and proper electrical contact for reliable operation.\u003c\/p\u003e \u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LA9D511\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\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 \u003cp\u003eEquip your panel with the trusted protection of Square D. The LA9D511 is ready to integrate with your existing Square D ecosystem, delivering clear, predictable protection when it matters most. Add it to your electrical hardware lineup to safeguard wiring, devices, and people with a proven, industry-standard solution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355315556514,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-la9d511-circuit-breaker-ampstate-breakers-303.webp?v=1788749883","url":"https:\/\/www.ampstate.com\/products\/square-d-la9d511-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}