{"product_id":"commander-20-amp-circuit-breaker-bql320-20a-240v-3-pole-bolt-on-circuit-breaker","title":"Commander 20 Amp Circuit Breaker BQL320 - 20 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eCommander BQL320\u003c\/strong\u003e is a 20A, 240V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for steady performance in demanding environments, this unit pairs rugged construction with precise trip characteristics to keep electrical systems safe and uninterrupted.\u003c\/p\u003e \u003ch2\u003eWhy this 3-pole bolt-on breaker stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e ensures a rigid, vibration-resistant bus connection that stays tight under dynamic conditions and thermal cycling.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection—responding quickly to overloads and short circuits while minimizing nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is engineered to work with matching loadcenters and panelboards, simplifying installs and replacements without compatibility surprises.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection\u003c\/strong\u003e suits balanced three-phase circuits, helping protect equipment and wiring in commercial and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile performance\u003c\/strong\u003e suited for residential, commercial, and light industrial environments where reliable power protection matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical specifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003ePart Number: \u003cstrong\u003eBQL320\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eType: \u003cstrong\u003eThermal-magnetic molded case circuit breaker\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eAmperage Rating: \u003cstrong\u003e20A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage Rating: \u003cstrong\u003e240V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eNumber of Poles: \u003cstrong\u003e3\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eMounting Style: \u003cstrong\u003eBolt-on\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or expanding panelboards and loadcenters in commercial spaces like offices, retail, or light industrial facilities.\u003c\/li\u003e \u003cli\u003eReplacing aging or worn breakers in residential subpanels where three-phase protection is required or where 240V service is used.\u003c\/li\u003e \u003cli\u003eProtecting motors, compressors, and other 3-phase equipment that require reliable fault interruption and rapid trip responses.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow it supports your electrical system\u003c\/h2\u003e\n\u003cp\u003eThe Commander 20A 240V 3-pole bolt-on breaker provides precise, predictable protection for three-phase circuits, reducing the risk of arcing faults and equipment damage. Its bolt-on design promotes a solid bus connection, which helps maintain consistent current flow and minimizes voltage drop at the connection point. By using a thermal-magnetic trip unit, it balances sensitivity and selectivity—tripping quickly on significant faults while avoiding unnecessary interruptions during normal operation.\u003c\/p\u003e \u003ch2\u003eInstallation and compatibility tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eVerify that the panelboard or loadcenter is designed for bolt-on molded case breakers and that the same manufacturer’s compatible accessories are used.\u003c\/li\u003e \u003cli\u003eEnsure the 3-pole configuration matches your three-phase distribution needs and that line\/load connections align with the panel’s bus arrangement.\u003c\/li\u003e \u003cli\u003ePeriodically test for smooth operation of the trip mechanism and inspect the mounting hardware to maintain a tight, vibration-resistant connection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose this product\u003c\/h2\u003e\n\u003cp\u003eWhen you need a reliable, purpose-built solution for 3-phase branch circuit protection, the Commander BQL320 delivers a precise balance of performance and compatibility. It’s engineered to integrate seamlessly with OEM panels, offers robust protection for a range of applications, and provides the durability required in everyday electrical infrastructure. Choose this 20A, 240V, 3-pole bolt-on breaker for installations where dependable protection and straightforward service are non-negotiable.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349485244578,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_5fdc6201-f8e3-4cde-a507-b61acea7d0df.png?v=1764147928","url":"https:\/\/www.ampstate.com\/products\/commander-20-amp-circuit-breaker-bql320-20a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}