{"product_id":"square-d-qo120m100rb-circuit-breaker","title":"Square D | QO120M100RB | Circuit Breaker | 100A | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D \u003cstrong\u003eQO120M100RB\u003c\/strong\u003e circuit breaker is the trusted solution for protecting your 100A, 240V circuits within QO-style panels. Built for maintenance, retrofit, and replacement, this unit is designed to slot into existing systems where exact specs matter, delivering reliable performance when it’s needed most.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned for Square D QO-series panels, offering a precise fit for compatible electrical systems.\u003c\/li\u003e \u003cli\u003eIdeal for maintenance, retrofit, and replacement projects where matching the original specs is essential.\u003c\/li\u003e \u003cli\u003ePart number QO120M100RB serves as the most reliable reference for compatibility—keep this reference handy when shopping for replacements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or restoring a residential or commercial electrical panel to ensure continued protection of 100A circuits at 240V.\u003c\/li\u003e \u003cli\u003eRetrofit projects where existing breakers in a Square D QO panel require exact spec matching to maintain safety and code compliance.\u003c\/li\u003e \u003cli\u003eMaintenance replacements to restore optimal circuit protection after wear or trip history.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to ensure a proper fit\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm fit and ratings before ordering. The part number is the best reference for compatibility.\u003c\/li\u003e \u003cli\u003eCompare the panel model and the existing breaker to ensure the QO family alignment and electrical ratings match the required specifications.\u003c\/li\u003e \u003cli\u003eWhen installing, ensure the main power is off and that the breaker seats fully in its position for secure operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance\u003c\/h3\u003e\n\u003cp\u003eIf you’re maintaining or upgrading a panel, this QO120M100RB breaker provides a straightforward, standards-aligned path to restoring circuit protection without overhauling the whole system. Its 100A, 240V rating makes it suitable for mid-to-large residential circuits or light commercial installations where robust protection is essential. Keep a few on hand for quick replacements to minimize downtime and keep electrical systems running safely.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424397250722,"sku":"QO120M100RB","price":464.0,"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-qo120m100rb-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}