{"product_id":"square-d-qob340vh-40a-240v-3-pole-bolt-on-circuit-breaker","title":"Square D QOB340VH - 40 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QOB340VH is a 40A, 240V, 3-pole bolt-on molded case circuit breaker built to deliver reliable branch circuit protection in panelboards and loadcenters. With a rugged bolt-on mounting design and a thermal-magnetic trip unit, this breaker provides stable, repeatable protection performance for everyday electrical systems.\u003c\/p\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e for a rigid, vibration-resistant bus connection that maintains lasting electrical integrity in challenging environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e ensures stable, repeatable protection behavior, responding to both overloads and short circuits with precision.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to pair with matching Square D OEM load centers and panelboards for streamlined replacement and installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile utility\u003c\/strong\u003e suitable for residential, commercial, and light industrial applications where dependable overcurrent protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QOB340VH\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 40 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 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal Use Scenarios\u003c\/h2\u003e\n\u003cp\u003ePerfect for upgrading or installing protection in panelboards and loadcenters where a reliable 3-pole solution is required. The 40A rating makes it well-suited for moderate-load circuits in homes, small-to-mid-size commercial spaces, and light industrial equipment setups. Its bolt-on design simplifies installation in panels that demand a secure, vibration-resistant connection, reducing the risk of loose bus bars and intermittent trips.\u003c\/p\u003e \u003ch2\u003eInstallation and Practical Insights\u003c\/h2\u003e\n\u003cp\u003eChoose the QOB340VH when you need a durable, ready-to-use breaker that aligns with Square D’s OEM equipment. The bolt-on mounting provides a rigid connection to the bus, helping maintain consistent electrical performance even in environments with vibration or movement. The thermal-magnetic trip unit delivers prompt, reliable protection against both sustained overloads and short circuits, helping to safeguard wiring, outlets, and connected loads.\u003c\/p\u003e \u003cp\u003eCompared to other molded case breakers, this model emphasizes compatibility and dependable protection in standard residential, commercial, and light industrial panel systems. When selecting a replacement or upgrade, ensure your panelboard or loadcenter is designed for 3-pole, 240V, 40A units to maximize safety and performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355420315810,"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_c5c5da3b-ccec-4d91-a6a9-d5155e204fc4.png?v=1764691991","url":"https:\/\/www.ampstate.com\/products\/square-d-qob340vh-40a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}