{"product_id":"square-d-qo340vh-circuit-breaker","title":"Square D | QO340VH | Circuit Breaker | 3-Pole | 240V | 22kA | Plug-In","description":"\u003cdiv\u003e\n\u003ch2\u003eSquare D QO340VH: 3-Pole 240V Plug-In Circuit Breaker\u003c\/h2\u003e\n\u003cp\u003eDesigned for maintenance, retrofit, and replacement in compatible Square D panels, the QO340VH is a dependable plug-in circuit breaker that meets demanding electrical protection needs. With three poles, this unit reliably safeguards three-phase circuits at 240V, delivering robust performance where it matters most.\u003c\/p\u003e \u003ch3\u003eCrucial specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting capacity:\u003c\/strong\u003e 22kA (at 240V)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Plug-In (designed for compatible QO panel boards)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QO340VH\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cp\u003eWhat sets the QO340VH apart is its combination of precise compatibility and strong fault protection. The three-pole configuration makes it ideal for safeguarding 3-phase equipment, motors, and balanced loads commonly found in commercial and light industrial settings. The 22kA interrupting rating provides a higher level of protection against short circuits, helping to minimize damage and downtime when a fault occurs.\u003c\/p\u003e \u003ch3\u003eFit, compatibility, and installation considerations\u003c\/h3\u003e\n\u003cp\u003eCompatibility is the key here. This unit is purpose-built for use in Square D QO-series panel boards. Before you order, \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e to ensure seamless replacement and reliable operation. Remember: the part number is your best reference for compatibility, so verify QO340VH matches your panel's specifications and existing breaker style.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacement for failed or aging 3-pole breakers in 240V, 3-phase systems\u003c\/li\u003e \u003cli\u003eRetrofit projects where existing equipment requires the QO plug-in format\u003c\/li\u003e \u003cli\u003eMaintenance upgrades to improve fault protection for motors and balanced loads\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for maximum reliability\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure the compatible QO panel board is designed for plug-in breakers of this size and rating.\u003c\/li\u003e \u003cli\u003ePower down the service and follow lockout\/tagout procedures before attempting replacement.\u003c\/li\u003e \u003cli\u003eInspect the panel bus connections for cleanliness and corrosion prior to installation to prevent poor contact.\u003c\/li\u003e \u003cli\u003eKeep a spare QO340VH on hand for scheduled maintenance and quick replacements to minimize downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat you gain with the QO340VH\u003c\/h3\u003e\n\u003cp\u003eReliable, easy-to-install protection for three-phase circuits at 240V, with a strong fault-current rating that helps protect downstream equipment and wiring. Its plug-in design makes swaps straightforward in compatible panels, reducing service time and complexity during upgrades or replacements. If you’re equipment-focused, this breaker provides a precise fit for your existing QO controller ecosystem, aligned with the part number you’ll reference for compatibility.\u003c\/p\u003e \u003cp\u003eReady for retrofit, maintenance, or replacement projects, the Square D QO340VH delivers dependable, three-pole protection where every amp matters. Ensure you’ve matched the panel and ratings, and you’ll have a robust, plug-in solution built to protect your electrical system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425625460898,"sku":"QO340VH","price":465.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-qo340vh-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}