{"product_id":"qou390","title":"Square D QOU390 - 90A, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D QOU390 90A Circuit Breaker—a purpose-built protective device designed to shield electrical systems from overloads and faults. With a 90-amp rating, this breaker provides decisive interruption when protection is needed, helping to maintain safe operation across your distribution network.\u003c\/p\u003e \u003ch2\u003eKey specifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBreaker type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhere it shines\u003c\/h2\u003e\n\u003cp\u003eSpecifically suitable for panelboards, switchboards, control panels, and OEM equipment, the QOU390 delivers reliable overcurrent protection in environments where dependable performance matters most. It’s an ideal choice for industrial facilities, commercial installations, and OEM applications that require safe operation in distribution panels and motor control centers.\u003c\/p\u003e \u003ch2\u003eWhy this matters\u003c\/h2\u003e\n\u003cp\u003eIn demanding settings, protecting wiring and equipment from short circuits and overloads is critical to minimizing downtime and extending the life of motors and drives. The Square D QOU390 provides sturdy, straightforward protection that supports sustained, safe operation in your electrical infrastructure.\u003c\/p\u003e \u003ch2\u003ePractical use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eIndustrial facilities with heavy motor loads needing robust 90A protection for feeders and branch circuits\u003c\/li\u003e \u003cli\u003eCommercial buildings requiring reliable protection within panelboards and switchboards\u003c\/li\u003e \u003cli\u003eOEM equipment enclosures where a dependable 90A circuit breaker is part of the control architecture\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eMaking the right choice\u003c\/h2\u003e\n\u003cp\u003eChoose the Square D QOU390 when you need a proven 90A circuit breaker that aligns with your distribution strategy and OEM configurations. Its clear protection profile supports safety, reliability, and straightforward maintenance in both new installations and retrofits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default","offer_id":46390528311458,"sku":"QOU390","price":215.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_12be19d3-3be1-4e12-8dcb-afde828d6df3.png?v=1765376784","url":"https:\/\/www.ampstate.com\/products\/qou390","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}