{"product_id":"square-d-qob230vh1021","title":"Square D QOB230VH1021 30A 2-Pole 230 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eDiscover dependable power protection with the Square D QOB230VH1021 30A 2-Pole 230 V Circuit Breaker Potential Transformer. This robust device pairs precise overcurrent protection for 240V circuits with integrated sensing capabilities, giving you a streamlined solution for modern panels that demand both reliability and monitorable performance. Designed for use in compatible Square D installations, it helps safeguard essential equipment while supporting voltage monitoring and fault-detection workflows.\u003c\/p\u003e \u003ch3\u003eKey specifications that matter\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 30 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 230 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QOB230VH1021\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Circuit breaker with potential transformer capability\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cp\u003eWhat sets the QOB230VH1021 apart is its combination of solid overcurrent protection and voltage sensing compatibility. The two-pole design ensures both hot legs disconnect together on a fault, reducing the risk of arcing and improving protection for 240V circuits such as HVAC, water heating, or electric appliances. The integrated potential transformer capability enables voltage sensing that can feed energy monitoring equipment or protective relays, helping you track performance, diagnose issues quickly, and support smarter energy management without adding extra components.\u003c\/p\u003e \u003ch3\u003eUse cases and ideal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eResidential and light commercial 240V circuits requiring reliable 30 A protection\u003c\/li\u003e \u003cli\u003eHVAC systems, electric dryers, water heaters, and other 240V loads where monitoring voltage is beneficial\u003c\/li\u003e \u003cli\u003ePanels that benefit from built-in sensing to interface with energy management or protection-relay systems\u003c\/li\u003e \u003cli\u003eSituations where streamlined replacement with a compatible Square D breaker minimizes downtime and maintains panel integrity\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems it solves\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePrevents overloads on 240V circuits, reducing the risk of equipment damage and electrical fires\u003c\/li\u003e \u003cli\u003eProvides voltage sensing to support monitoring and diagnostics, helping you catch anomalies early\u003c\/li\u003e \u003cli\u003eFits neatly into compatible Square D panels, simplifying upgrades or replacements without complicated rewiring\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panel accepts QOB series breakers for a proper fit and safe operation\u003c\/li\u003e \u003cli\u003eReplace like-for-like with the QOB230VH1021 to maintain circuit protection levels and compatibility\u003c\/li\u003e \u003cli\u003eFollow standard electrical safety practices and local codes; if in doubt, consult a licensed electrician\u003c\/li\u003e \u003cli\u003eEnsure correct torque on terminal connections and inspect for any signs of wear or damage during installation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eValue you can rely on\u003c\/h3\u003e\n\u003cp\u003eChoosing the Square D QOB230VH1021 means opting for a trusted name in electrical protection with a thoughtful design that supports modern monitoring needs. Its 30 A rating is a practical choice for a range of 240V circuits, while the potential transformer capability opens doors to improved visibility and proactive maintenance in your electrical system. For installers and facility managers aiming for reliability, measurable protection, and easier integration with monitoring setups, this breaker offers a compelling combination of performance and practicality.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423142105250,"sku":"QOB230VH1021","price":2318.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/square-d-qob230vh1021","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}