{"product_id":"square-d-qhb330-circuit-breaker","title":"Square D | QHB330 | Circuit Breaker | 30A | 3-Pole | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D \u003cstrong\u003eQHB330\u003c\/strong\u003e Circuit Breaker is a purpose-built, 30A \u003cstrong\u003e3-Pole\u003c\/strong\u003e bolt-on solution designed for reliable protection in compatible Square D panels. Built for maintenance, retrofit, and replacement projects, this exact-part model helps you keep power safe and systems running with minimal downtime.\u003c\/p\u003e \u003ch3\u003eWhy the QHB330 stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection\u003c\/strong\u003e—ideal for 3-phase circuits, delivering balanced overcurrent protection across all conductors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e30-amp rating\u003c\/strong\u003e—provides sturdy protection for mid-range feeders and branch circuits without sacrificing performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e—secure, durable installation that simplifies future service and helps maintain panel integrity during replacements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact fit reference\u003c\/strong\u003e—the \u003cstrong\u003eQHB330\u003c\/strong\u003e part number is your best reference for compatibility with Square D panels, reducing guesswork and mismatch risk.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted use cases\u003c\/strong\u003e—engineered for maintenance, retrofit, and replacement tasks within Square D electrical systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility and installation notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings for your specific setup. The \u003cstrong\u003eQHB330\u003c\/strong\u003e part number is the most reliable guide to compatibility within Square D systems. If your panel requires a different breaker family or bus configuration, this model may not be suitable—even if amperage and pole count match.\u003c\/p\u003e \u003ch3\u003eWho benefits most\u003c\/h3\u003e\n\u003cp\u003eElectrical professionals, facilities managers, and contractors working with Square D panels will appreciate the precision fit, straightforward bolt-on installation, and clear reference in the part number. It’s especially well-suited for retrofit projects, routine maintenance, and reliable replacements where uptime is critical.\u003c\/p\u003e \u003cp\u003eKeep this breaker on hand for planned maintenance windows or urgent replacement scenarios in commercial and light industrial environments, ensuring continued protection and consistent electrical performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426832634018,"sku":"QHB330","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qhb330-circuit-breaker-30a-3-pole-bolt-984.webp?v=1789630369","url":"https:\/\/www.ampstate.com\/products\/square-d-qhb330-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}