{"product_id":"square-d-q1390-circuit-breaker","title":"Square D | Q1390 | Circuit Breaker | 90A | 3-Pole | 240V | 10kA | Plug-In","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D Q1390 circuit breaker—a precise, plug-in protection solution for 240V, 3-pole circuits. With a 90A rating and a 10kA short‑circuit interrupting capability, this breaker is built to handle demanding loads while enabling quick, reliable replacements in compatible panels.\u003c\/p\u003e \u003cp\u003eDesigned for maintenance, retrofit, and replacement projects where exact specifications matter, the Q1390 helps you restore safe operation without guessing on compatibility.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3‑Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting rating:\u003c\/strong\u003e 10 kA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Plug‑In\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePlug‑in installation enables faster swaps in compatible Square D panels, reducing downtime during upgrades or repairs.\u003c\/li\u003e \u003cli\u003eThree‑pole design ensures all phases trip together for safer maintenance on 240V, three‑phase or multi‑branch circuits.\u003c\/li\u003e \u003cli\u003eThe 10kA interrupting rating provides robust protection against high fault currents common in commercial and light industrial settings.\u003c\/li\u003e \u003cli\u003eExact part number Q1390 makes compatibility clear—use this as your primary reference when sourcing replacements or retrofits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications and use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePanel retrofits where a precise 90A, 3‑pole, 240V plug‑in breaker is required\u003c\/li\u003e \u003cli\u003eMaintenance or replacement of aging circuits in commercial or light industrial environments\u003c\/li\u003e \u003cli\u003eMotor control and heavy-load circuits that demand reliable overload protection with a strong interrupting rating\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering. Part number is the best reference for compatibility.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425643450530,"sku":"Q1390","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-q1390-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}