{"product_id":"square-d-qob3100-100a-240v-3-pole-bolt-on-circuit-breaker","title":"Square D QOB3100 - 100 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QOB3100\u003c\/strong\u003e is a 100-amp, 240-volt, 3-pole bolt-on molded case circuit breaker engineered to protect electrical systems in panelboards and load centers. Built for dependable branch circuit overcurrent and short-circuit protection, this unit delivers consistent performance in real-world installations.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: a rigid, vibration-resistant bus connection that stays tight under dynamic loads, helping maintain reliable protection over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: combines thermal and magnetic elements for stable, repeatable protection—opening reliably on sustained overloads and instantaneous short-circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e: designed to work seamlessly with matching Square D OEM load centers and panelboards for straightforward replacements and coordinated protection schemes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e: suitable for residential, commercial, and light industrial environments where dependable branch circuit protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: QOB3100\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 100 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this 3-pole bolt-on breaker stands out: it’s built to integrate with Square D panelboards and load centers, delivering a reliable, coordinated protection solution for multi-phase circuits. The bolt-on design reduces connection loose ends and vibration-related wear, while the thermal-magnetic trip ensures protection remains consistent across varying loads and conditions. This makes the QOB3100 an ideal choice for new installations, panelboard upgrades, or replacements in residential subpanels, light commercial setups, and small industrial applications where safety and reliability matter most.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical use and tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBest suited for panelboards and load centers that require a 100 A, 240 V, 3-pole, bolt-on molded case breaker.\u003c\/li\u003e \u003cli\u003eVerify compatibility with your specific Square D OEM enclosure to ensure seamless fit and coordinated protection.\u003c\/li\u003e \u003cli\u003eWhen installing, follow manufacturer torque specifications for bolt-on mounting to maintain a secure, vibration-resistant connection.\u003c\/li\u003e \u003cli\u003eUse as part of a balanced protection strategy to reduce nuisance trips and protect downstream equipment from overcurrent and short circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355415957666,"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_64a7450d-3bcb-4103-b2c7-3b62b84b7973.png?v=1764691967","url":"https:\/\/www.ampstate.com\/products\/square-d-qob3100-100a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}