{"product_id":"square-d-qob350epd-120v-3-pole-bolt-on-circuit-breaker","title":"Square D QOB350EPD - 120 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QOB350EPD\u003c\/strong\u003e delivers dependable branch-circuit overcurrent and short-circuit protection for 120V panelboards and load centers. This 3-pole, bolt-on molded-case circuit breaker combines rugged construction with precise trip technology to keep critical circuits safe and running in demanding environments.\u003c\/p\u003e \u003ch3\u003eWhy this 3-pole bolt-on 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 consistent electrical contact and reduced risk of nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to overloads and short circuits across varying temperatures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is tuned to partner with matching Square D OEM load centers and panelboards, ensuring proper fit, coordination, and reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration for 120V systems\u003c\/strong\u003e ideal for residential, commercial, and light industrial applications requiring full multi-pole protection on 3-phase or multi-wire circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: QOB350EPD\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eVoltage Rating: 120V\u003c\/li\u003e \u003cli\u003ePoles: 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 \u003ch3\u003eIdeal applications and use cases\u003c\/h3\u003e\n\u003cp\u003eChoose this model for panelboards and load centers that require robust 3-pole protection at 120V. It’s well-suited for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCommercial electrical rooms feeding 3-wire or 3-phase equipment\u003c\/li\u003e \u003cli\u003eUpgrades or replacements in existing Square D installations to restore OEM-grade protection\u003c\/li\u003e \u003cli\u003e120V branch circuits in lighting panels, small motors, HVAC controls, and other common electrical loads\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility\u003c\/h3\u003e\n\u003cp\u003eThis QOB bolt-on breaker is designed to mount securely on compatible Square D panel rails and works best with matching OEM load centers and panelboards. When selecting this model, confirm that your enclosure is rated for 120V, 3-pole bolton breakers and that the QOB form factor aligns with your panel’s design. Proper mounting and alignment promote long-term reliability and consistent protection across your electrical system.\u003c\/p\u003e \u003ch3\u003eWhy shop Square D with AmpState\u003c\/h3\u003e\n\u003cp\u003eAmpState offers genuine Square D QOB350EPD components, backed by authentic parts and reliable support. With fast availability and OEM-grade protection, you can trust this 120V, 3-pole bolt-on breaker to keep your panel and connected circuits safe and compliant.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355420741794,"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_bb26cf77-1e11-40a2-8298-927363e1680d.png?v=1764691995","url":"https:\/\/www.ampstate.com\/products\/square-d-qob350epd-120v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}