{"product_id":"square-d-qob310-10a-3p-240v-circuit-breaker","title":"Square D QOB310 10A 3P 240V Circuit Breaker, QO, Bolt-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSquare D QOB310\u003c\/strong\u003e is a rugged, three-pole circuit breaker designed for reliable protection in \u003cem\u003eQO\u003c\/em\u003e panelboards, load centers, and electrical distribution systems. With a \u003cstrong\u003e10 A\u003c\/strong\u003e rating and \u003cstrong\u003e240V\u003c\/strong\u003e operation, this bolt-on unit fits seamlessly into existing circuits, delivering precise overcurrent protection where you need it most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QOB310\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e QO Bolt-On Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 10 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e QO family, panelboards, load centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters: bolt-on design provides secure mounting and dependable contact in demanding electrical environments. The QOB310 is ideal for \u003cem\u003ereplacement projects\u003c\/em\u003e where maintaining BOM alignment with the original part number is critical, as well as for stocking spares to minimize downtime during service calls. This is a practical choice for technicians maintaining commercial or industrial panels that rely on consistent, long-lasting protection for 240V circuits.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eBest-use scenarios\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed 3-pole, 240V circuit breaker in existing QO panels without changing other hardware.\u003c\/li\u003e \u003cli\u003eKeeping a purge spare on hand to preserve BOM integrity and ensure quick field swaps.\u003c\/li\u003e \u003cli\u003eUpgrading or stocking hardware for service vehicles and warehouses where original part compatibility matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat to expect in day-to-day use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eStable, secure electrical connections thanks to bolt-on mounting designed for QO systems.\u003c\/li\u003e \u003cli\u003eReliable 10 A protection for multi-pole 240V circuits such as motor loads, commercial equipment, and HVAC controls.\u003c\/li\u003e \u003cli\u003eClear component traceability via the QOB310 part number for easy maintenance records and inventory control.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIf you’re unsure about fit or compatibility, AmpState offers expert assistance to verify the correct part number and ensure a precise match for your panelboard or load center. \u003cem\u003eMessage us to confirm fit and avoid a mismatch in critical protection devices.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411109761186,"sku":"QOB310","price":477.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/www.ampstate.com\/products\/square-d-qob310-10a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}