{"product_id":"square-d-fhf16090-circuit-breaker","title":"Square D | FHF16090 | Circuit Breaker | 90A | 1-Pole | 277V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D FHF16090, a dedicated 90A, 1-Pole circuit breaker designed to protect a single 277V circuit with dependable, localized protection. Built for maintenance, retrofit, and replacement projects, this device helps you restore safe operation quickly when a circuit fault occurs, with the precise specs required to keep your electrical system aligned with your panel’s requirements.\u003c\/p\u003e \u003ch3\u003eKey specifications and compatibility\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 90A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 277V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: FHF16090 — the best reference for compatibility with your Square D panels\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFit guidance\u003c\/strong\u003e: Confirm fit and ratings on your panel labeling before ordering; use the part number as the primary compatibility reference\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Square D breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong reliable replacement option:\u003e Specifically sized and rated for 277V single-pole circuits, making it ideal for retrofits and replacements in commercial electrical environments.\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong precision for maintenance and retrofits:\u003e By matching the exact part number FHF16090, you reduce the risk of mismatched trip curves or fit issues during panel upgrades.\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong built for commercial use:\u003e Designed to integrate with Square D distribution panels commonly found in offices, retail spaces, schools, and warehouses where 277V lighting or equipment circuits are standard.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofits or panel upgrades in commercial facilities where 277V single-pole protection is required for lighting circuits or designated loads\u003c\/li\u003e \u003cli\u003eMaintenance replacements to minimize downtime on critical 277V circuits within existing Square D installations\u003c\/li\u003e \u003cli\u003eEmergency-repair scenarios where a direct 90A, 1-Pole replacement helps quickly restore service to a single circuit\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and verification\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways verify the panel labeling and system ratings before purchasing. The part number FHF16090 is the most reliable reference for compatibility.\u003c\/li\u003e \u003cli\u003eDuring replacement, ensure the system is de-energized and that the replacement matches the original’s amperage, pole count, and voltage rating to avoid overprotection or underprotection.\u003c\/li\u003e \u003cli\u003eStore spare breakers in a clean, dry location and label replacements with the corresponding circuit for faster future maintenance.\u003c\/li\u003e \u003cli\u003eConsider documenting the exact panel model and slot where the breaker is installed to streamline future servicing or part replacements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor dependable circuit protection in commercial environments that rely on 277V single-pole circuits, the Square D FHF16090 delivers a precise, reliable solution. Use the part number as your go-to reference to ensure seamless compatibility with your existing Square D distribution panels.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426426114210,"sku":"FHF16090","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-fhf16090-circuit-breaker-90a-1-pole-277v-977.webp?v=1789574593","url":"https:\/\/www.ampstate.com\/products\/square-d-fhf16090-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}