{"product_id":"square-d-qh120-circuit-breaker","title":"Square D | QH120 | Circuit Breaker | 20A | 1-Pole | 240V | Plug-In","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QH120 Circuit Breaker is a purpose-built, plug-in solution designed for quick, dependable protection in compatible panels. With a 20-amp rating, 1-pole configuration, and 240V capability, this device is ideal for maintenance, retrofit, and replacement projects where exact specification matches are essential. Reference the QH120 part number to ensure a perfect fit in your Square D panel system.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 20A\u003c\/li\u003e \u003cli\u003ePoles: 1-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 240V\u003c\/li\u003e \u003cli\u003eMounting: Plug-In\u003c\/li\u003e \u003cli\u003eCompatibility reference: QH120 (best reference for panel compatibility)\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters for your project\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePlug-in design minimizes installation time and panel disruption, so you can restore circuit protection quickly after a fault or during a panel refresh.\u003c\/li\u003e \u003cli\u003eDesigned to align with Square D’s safety standards and trip characteristics, delivering consistent protection for circuits that require 20 amps at 240 volts.\u003c\/li\u003e \u003cli\u003eUsing the exact part number helps maintain UL labeling accuracy and warranty coverage on your panel, reducing the risk of compatibility issues down the line.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRepair or replacement in existing Square D panels where a 1-pole, 240V, 20A plug-in breaker is specified.\u003c\/li\u003e \u003cli\u003eRetrofit projects that require a precise part number match to ensure correct bus bar engagement and trip performance.\u003c\/li\u003e \u003cli\u003eMaintenance workflows in electrical service upgrades where downtime needs to be minimized and compatibility verified beforehand.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical guidance for installation and compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, confirm fit and ratings against your panel’s labeling and service requirements; the QH120 is the recommended reference for this breaker type.\u003c\/li\u003e \u003cli\u003eEnsure your panel is designed for plug-in, 1-pole 240V protection and that the mounting style matches the QH series specifications.\u003c\/li\u003e \u003cli\u003eRetain the part number reference (QH120) in your project notes to streamline future replacements or panel servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426773880994,"sku":"QH120","price":390.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_16d3a2fb-5d93-424c-9206-5031ec4b178f.png?v=1765492977","url":"https:\/\/www.ampstate.com\/products\/square-d-qh120-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}