{"product_id":"square-d-qob120epd-20a-120v-1-pole-bolt-on-circuit-breaker","title":"Square D QOB120EPD - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QOB120EPD is a 20-amp, 120-volt, 1-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built for residential, commercial, and light industrial installations, it offers reliable performance where it matters most—keeping circuits safe and uptime steady.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection for long-lasting reliability in dynamic panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection against overloads and short circuits, reducing nuisance trips while safeguarding sensitive circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e design ensures a precise fit with matching Square D load centers and panelboards, making upgrades or replacements straightforward.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1-pole, 20A, 120V configuration\u003c\/strong\u003e is ideal for protecting individual branch circuits, lighting runs, or appliance circuits within a variety of installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple environments\u003c\/strong\u003e suitable for residential, commercial, and light industrial applications where dependable overcurrent protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: \u003cstrong\u003eSquare D\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart Number: \u003cstrong\u003eQOB120EPD\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eType: \u003cstrong\u003eThermal-magnetic molded case circuit breaker\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eAmperage Rating: \u003cstrong\u003e20A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage Rating: \u003cstrong\u003e120V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eNumber of Poles: \u003cstrong\u003e1\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eMounting Style: \u003cstrong\u003eBolt-on\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eApplication: \u003cstrong\u003eBranch circuit overcurrent and short-circuit protection\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases and installation takeaways\u003c\/h3\u003e\n\u003cp\u003eUse the QOB120EPD to secure individual branch circuits within a compatible Square D panelboard or load center. Its bolt-on design minimizes movement and vibration at the bus connection, making it a reliable choice for panels that experience frequent door openings, panel movement, or vibration in commercial spaces. The 20A rating is well-suited for circuits that feed lighting, receptacles, or small appliances where robust protection is essential without frequent nuisance trips.\u003c\/p\u003e \u003cp\u003eIdeal for installers and property managers looking for a drop-in replacement that aligns with OEM specifications, the QOB120EPD streamlines maintenance and reduces retrofit complexity. Pair this breaker with matching Square D components to preserve electrical system integrity, maintain warranty eligibility, and ensure consistent protection across your panelboard ecosystem.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355406880930,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_dd4d974f-cd58-4c56-ac58-34cdbe86ba0c.png?v=1764691895","url":"https:\/\/www.ampstate.com\/products\/square-d-qob120epd-20a-120v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}