{"product_id":"square-d-hdl36090-90a-600v-3-pole-circuit-breaker","title":"Square D HDL36090 - 90 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D HDL36090—a 90 A, 600 V, 3-pole molded case circuit breaker engineered to safely shield electrical systems from overloads and short circuits. Designed for dependable branch-circuit protection in panelboards and load centers, it combines a compact footprint with robust performance to fit tight spaces without compromising protection.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient design\u003c\/strong\u003e: The compact molded case form optimizes panel space, making it easier to organize and expand distribution layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStable protection\u003c\/strong\u003e: A \u003cstrong\u003ethermal-magnetic trip unit\u003c\/strong\u003e delivers repeatable, reliable response across varying temperatures and load conditions, helping prevent nuisance trips while safeguarding circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e: Specifically \u003cstrong\u003ecompatible with matching OEM load centers and panelboards\u003c\/strong\u003e, simplifying replacement projects and ensuring a proper fit from day one.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e: Suitable for \u003cstrong\u003eresidential, commercial, and light industrial\u003c\/strong\u003e electrical distributions, covering a wide range of protection needs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specs at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eType: \u003cstrong\u003eThermal-magnetic molded case circuit breaker\u003c\/strong\u003e (MCCB)\u003c\/li\u003e \u003cli\u003eAmpere Rating: \u003cstrong\u003e90 A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage Rating: \u003cstrong\u003e600 V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e3\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eManufacturer: \u003cstrong\u003eSquare D\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart Number: \u003cstrong\u003eHDL36090\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and practical scenarios\u003c\/h3\u003e\n\u003cp\u003eIn a residential panel, the HDL36090 provides a dedicated 90 A feeder protection for large circuits or subpanels, ensuring safe distribution to downstream devices. In light commercial environments, it protects essential circuits such as HVAC feeds, lighting corridors, and office equipment, while in small industrial settings it guards distribution lines that operate up to 600 V. Its three-pole design ensures balanced protection across all conductors in three-phase or single-phase configurations used in these environments.\u003c\/p\u003e \u003ch3\u003eWhat sets it apart from generic breakers\u003c\/h3\u003e\n\u003cp\u003eThis Square D MCCB isn’t a generic drop-in replacement. Its \u003cstrong\u003ecompact form factor\u003c\/strong\u003e and \u003cstrong\u003ethermally magnetic trip\u003c\/strong\u003e mechanism are purpose-built to work within OEM panel systems, providing consistent trip characteristics and reduced chances of incompatibility. If you’re replacing an aging unit or expanding a panel, HDL36090 offers reliable performance aligned with Square D ecosystems.\u003c\/p\u003e \u003ch3\u003eInstallation and safety tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panel compatibility: use HDL36090 with panels and load centers designed for this part number or compatible Square D OEM equivalents.\u003c\/li\u003e \u003cli\u003eConfirm electrical ratings: ensure circuits are within \u003cstrong\u003e90 A\u003c\/strong\u003e and \u003cstrong\u003e600 V\u003c\/strong\u003e for safe operation.\u003c\/li\u003e \u003cli\u003eLabel clearly: document the breaker type and rating on your panel schedule to streamline future servicing or replacements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eMaintenance and longevity\u003c\/h3\u003e\n\u003cp\u003eWith a thermal-magnetic trip unit, the HDL36090 provides dependable protection with minimal maintenance. Regular checks of connections and mounting integrity help preserve performance and prolong service life in everyday electrical environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355263652002,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_33c32046-3f41-4c3b-a270-3a2057a8c30a.png?v=1764690796","url":"https:\/\/www.ampstate.com\/products\/square-d-hdl36090-90a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}