{"product_id":"commander-qbh290-90a-240v-2-pole-bolt-on-circuit-breaker","title":"Commander QBH290 - 90 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Commander QBH290 is a 90A, 240V, 2-pole bolt-on molded case circuit breaker designed to deliver reliable branch-circuit protection for panelboards and load centers. Built to stand up to everyday electrical demands, it combines robust construction with precise protection to keep circuits safe and interruptions minimal.\u003c\/p\u003e \u003ch2\u003eWhy the QBH290 stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection. In panels that experience movement or vibration, this design reduces loosening and maintains dependable protection where it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable and repeatable protection performance across a range of loads and temperatures, helping prevent nuisance trips while still responding quickly to overcurrent or short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is made to match with corresponding Commander OEM load centers and panelboards, ensuring a smooth upgrade or retrofit without compatibility headaches.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple environments\u003c\/strong\u003e—suitable for residential, commercial, and light industrial applications where strong protection of branch circuits is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable molded-case construction\u003c\/strong\u003e offers long-lasting reliability in demanding electrical installations, with a sturdy form factor designed for easy field servicing.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe QBH290 protects both conductors in a 240V circuit, interrupting power on fault to prevent damage to wiring and connected equipment. With a 90A rating, it’s well-suited for higher-demand feeders and circuits that power heavy appliances, multi-outlet kitchen layouts, or motor-driven loads in light commercial settings.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Commander\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QBH290\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 90A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading residential panelboards to safely feed high-demand circuits (e.g., dedicated appliance circuits, multi- receptacle areas) with secure, vibration-resistant mounting.\u003c\/li\u003e \u003cli\u003eInstalling or expanding commercial load centers where reliable protection for lighting and power distribution is critical.\u003c\/li\u003e \u003cli\u003eLight industrial applications requiring robust, dependable two-pole protection for feeders and motor circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical installation and care tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure the breaker is compatible with the specific panelboard model you’re using; confirm OEM compatibility to maintain coordinated protection and warranty alignment.\u003c\/li\u003e \u003cli\u003eFollow the panelboard manufacturer’s torque specifications for bolt-on connections to maintain a secure bus contact and proper trip operation.\u003c\/li\u003e \u003cli\u003eVerify the breaker is firmly seated and locked into the bus before energizing the circuit. Regularly inspect for signs of wear or loosening in high-vibration environments.\u003c\/li\u003e \u003cli\u003eKeep this unit as part of a routine electrical maintenance plan, testing trip functionality in a controlled manner per local codes and safety guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Commander QBH290, you’re choosing a purpose-built solution for dependable overcurrent and short-circuit protection. Its bolt-on rigidity, thermal-magnetic reliability, and OEM compatibility translate to safer panels, fewer interruptions, and a smoother path to compliant, long-lasting electrical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349483507874,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_2780df65-f93f-4390-84d1-4fb3d2eacf30.png?v=1764147898","url":"https:\/\/www.ampstate.com\/products\/commander-qbh290-90a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}