{"product_id":"square-d-hjl36030-30a-600v-3-pole-circuit-breaker","title":"Square D HJL36030 - 30 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D HJL36030, a 30A, 600V, 3-pole molded case circuit breaker designed to shield your electrical system from overcurrent and short-circuit faults. Built for dependable protection in panelboards and load centers, this breaker combines space efficiency with precise, reliable performance.\u003c\/p\u003e \u003ch2\u003eKey benefits and features\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes panel space, helping you fit more circuits cleanly without crowding the enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection across temperature variations, reducing nuisance trips while still catching dangerous faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e provides balanced protection for three-phase circuits, or shared-neutral setups common in commercial and light industrial installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to work with matching Square D load centers and panelboards for straightforward, drop-in replacement or modernization projects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V rated\u003c\/strong\u003e suitable for higher voltage branch circuits found in commercial and light industrial environments, offering robust protection where it matters most.\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 HJL36030\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 30A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\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 applications and use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eResidential homes with three-phase subpanels in light commercial setups require reliable protection for multiple branches without overcrowding the panel. This 3-pole breaker fits neatly into those spaces.\u003c\/li\u003e \u003cli\u003eCommercial offices and small retail environments where three-phase equipment (pumps, HVAC units, lighting panels) demand dependable, quick-disconnect protection.\u003c\/li\u003e \u003cli\u003eLight industrial machinery and equipment enclosures that run on a robust 600V supply, offering consistent protection against overloads and faults.\u003c\/li\u003e \u003cli\u003ePanelboard modernization projects where compatibility with OEM load centers ensures smooth upgrades and easier maintenance scheduling.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose this model and practical tips\u003c\/h2\u003e\n\u003cp\u003eThe HJL36030 stands out for users who value panel efficiency and reliable fault protection. Its thermal-magnetic trip mechanism minimizes nuisance trips while still providing fast disconnection on true faults, giving you peace of mind in environments with fluctuating loads. Compared with bulkier or less-tuned breakers, this unit helps you maximize panel capacity without sacrificing safety.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure your panelboard is rated for 600V and that the bus stabs are compatible with this Square D HJL series.\u003c\/li\u003e \u003cli\u003eUse as part of a coordinated protection scheme—pair with appropriately sized conductors and properly rated fuses or breakers on adjacent circuits for balanced protection.\u003c\/li\u003e \u003cli\u003eSchedule routine maintenance checks to verify torque on terminations and confirm there are no signs of overheating or wear around the breaker.\u003c\/li\u003e \u003cli\u003eKeep a spare in your maintenance kit for quick replacements during routine servicing or fault events, reducing downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re upgrading an existing panel, configuring a new commercial space, or protecting critical three-phase loads, the Square D HJL36030 delivers reliable, space-efficient protection with a trusted brand backing. AmpState offers this essential component to help you build safer, more resilient electrical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355293601954,"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_ce63705c-ead4-4f68-a140-7bbf32af37ba.png?v=1764690997","url":"https:\/\/www.ampstate.com\/products\/square-d-hjl36030-30a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}