{"product_id":"square-d-qob120gfi-20a-1p-120v-circuit-breaker","title":"Square D QOB120GFI 20A 1P 120V Circuit Breaker, QO, GFCI, Bolt-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QOB120GFI is a 1-pole, 20 A, 120-volt GFCI circuit breaker designed for bolt-on mounting in Square D QO panelboards and load centers. Built for retrofit projects and ongoing maintenance, this part keeps your electrical distribution consistent when replacements are needed, so you can protect circuits without changing the entire panel lineup.\u003c\/p\u003e \u003ch3\u003eKey benefits at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eGFCI protection\u003c\/strong\u003e helps guard against electrical shock by detecting ground faults on the protected circuit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-On mounting\u003c\/strong\u003e delivers a secure, straightforward installation in compatible QO enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e20 A, 1-pole, 120 V\u003c\/strong\u003e specification makes it a precise match for branch circuits requiring dedicated overcurrent and ground-fault protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eQO family compatibility\u003c\/strong\u003e ensures reliable performance within existing Square D distribution systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number stability\u003c\/strong\u003e ideal for retrofit work where the QOB120GFI keeps your replacement catalog consistent and your planning predictable.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvalable from AmpState\u003c\/strong\u003e with support to confirm fit and compatibility for your panel.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy technicians and facilities managers choose the QOB120GFI\u003c\/h3\u003e\n\u003cp\u003eWhen upgrading protection in an established panel, compatibility and installation speed matter. The QOB120GFI is a direct fit for QO panels that support bolt-on breakers, offering a reliable, code-compliant solution without reconfiguring your distribution layout. Its 1-pole design is ideal for single-circuit protection, while the GFCI feature adds an essential layer of safety in areas where moisture or sensitive electronics are present. For retrofit projects, sticking with the same part family and part number simplifies ordering, stocking, and future maintenance.\u003c\/p\u003e \u003ch3\u003eIdeal use cases and practical applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofits in existing Square D QO panelboards where GFCI protection is required for a branch circuit.\u003c\/li\u003e \u003cli\u003eMaintenance planning where maintaining a consistent part number minimizes change management and procurement steps.\u003c\/li\u003e \u003cli\u003eNew installations that reuse or extend an existing QO distribution scheme while adding ground-fault protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cp\u003eBefore installation, verify that your panel is a QO-type enclosure and supports bolt-on breakers of the QOB series. The QOB120GFI is specifically designed for 120V circuits and 20A protection, so match to the circuit rating and voltage in the panel rating. If you’re unsure about fit, AmpState can assist in confirming compatibility and providing the right part for your setup.\u003c\/p\u003e \u003cp\u003eFor help matching a part number or confirming compatibility, send a message and AmpState will help you confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410837819554,"sku":"QOB120GFI","price":337.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/square-d-qob120gfi-20a-1p-120v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}