{"product_id":"square-d-qob290-90a-240v-2-pole-bolt-on-circuit-breaker","title":"Square D QOB290 - 90 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eAmpState presents the Square D QOB290 90A, 240V, 2-Pole Bolt-On Molded Case Circuit Breaker — a robust choice for dependable protection in today’s electrical panels. This unit is engineered to guard both wiring and connected equipment from overcurrent and short-circuit events, ensuring smooth, continuous operation in demanding environments.\u003c\/p\u003e \u003cp\u003eBuilt for reliability in panelboards and load centers, this 2‑pole breaker features a secure bolt-on mounting that creates a rigid, vibration‑resistant bus connection. Its thermal‑magnetic trip unit provides stable, repeatable protection performance, responding quickly to short circuits while avoiding unnecessary trips on gradual overloads.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\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\u003eTrip mechanism:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed to be used with matching OEM load centers and panelboards\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy it matters\u003c\/strong\u003e: The bolt-on design delivers a rock-solid mechanical connection that stays secure in environments with vibration or movement—common in busy electrical rooms and equipment spaces. The thermal-magnetic trip unit delivers precise protection: fast enough to stop faults, yet selective enough to minimize nuisance trips, helping protect downstream devices and wiring.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e include:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eNew installs or replacements in residential panelboards where a 90 A, 240 V solution is required\u003c\/li\u003e \u003cli\u003eSubpanels in small to mid-size commercial settings needing reliable feeder protection\u003c\/li\u003e \u003cli\u003eLight industrial enclosures where dependable fault protection and durable mounting are essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWho should consider the QOB290\u003c\/strong\u003e: electricians, facilities managers, and maintenance teams who value compatibility with Square D OEM panels and load centers, predictable protection behavior, and a mounting method designed for long-term vibration resistance. This breaker helps standardize protection across multiple installations, reducing troubleshooting time and enhancing system uptime.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical guidance\u003c\/strong\u003e: Verify that your panelboard model is compatible with the QOB290, and follow standard electrical safety procedures during installation. With its 90 A rating and 240 V capacity, it’s a practical, reliable choice for mid-range distribution protections in both new builds and retrofit projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355415826594,"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_eec469d7-bc95-4a65-a080-abcd4da9baa6.png?v=1764691964","url":"https:\/\/www.ampstate.com\/products\/square-d-qob290-90a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}