{"product_id":"square-d-jjl36250u44x-250a-600v-3-pole-circuit-breaker","title":"Square D JJL36250U44X - 250 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D JJL36250U44X\u003c\/strong\u003e is a rugged 250 A, 600 V, 3-pole molded case circuit breaker engineered to deliver dependable branch circuit protection in panelboards and load centers. Built for durability and precise trip performance, this device keeps electrical systems safe from overloads and short circuits while maximizing panel space.\u003c\/p\u003e \u003ch3\u003eWhy this 3-pole molded case breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e reduces footprint inside panels, helping you fit more circuits without compromising protection or serviceability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection across a range of fault conditions and ambient temperatures—so you get reliable disconnection when it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-phase protection\u003c\/strong\u003e with a 3-pole configuration ensures simultaneous disconnection of all conductors, enhancing safety in three-phase systems and minimizing arc flash risk during faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e designed to pair with matching Square D loadcenters and panelboards for straightforward replacement and streamlined field upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCore specifications at a glance\u003c\/h3\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 JJL36250U44X\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 250 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\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 \u003ch3\u003eIdeal use cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eCommercial spaces with three-phase distribution where robust fault protection is essential for safety and uptime.\u003c\/li\u003e \u003cli\u003eResidential-grade commercial installations transitioning to higher-capacity panels requiring reliable 250 A protection.\u003c\/li\u003e \u003cli\u003eLight industrial equipment layouts that demand quick disconnection of all three phases during a fault to prevent equipment damage.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it integrates with your system\u003c\/h3\u003e\n\u003cp\u003eThis JJL36250U44X breaker is designed to work seamlessly with matching OEM loadcenters and panelboards, enabling a clean, plug-and-play replacement or upgrade path. Its high-current rating makes it suitable for feeding large branches or main distribution points, while the 600 V rating provides the headroom needed for commercial and industrial environments.\u003c\/p\u003e \u003ch3\u003ePractical considerations and tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure compatibility with your existing Square D panelboard or loadcenter to maintain UL-listed protection and warranty coverage.\u003c\/li\u003e \u003cli\u003eUse within standard electrical codes and manufacturer installation guidelines. Proper sizing of conductors and correct torque on connections are essential for reliable operation.\u003c\/li\u003e \u003cli\u003eConsider the benefits of a thermal-magnetic trip: instantaneous response to short circuits plus thermal protection to guard against nuisance trips due to ambient temperature or load fluctuations.\u003c\/li\u003e \u003cli\u003eIdeal as part of a modular protection strategy—pair with other rated devices in the same family to maintain coordinated protection across your electrical system.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUpgrade your panel’s reliability with the Square D JJL36250U44X—delivering strong overcurrent defense, clean panel integration, and peace of mind for commercial and light industrial electrical layouts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355307331746,"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_90f81435-ef77-41b8-9458-7288f5a64140.png?v=1764691152","url":"https:\/\/www.ampstate.com\/products\/square-d-jjl36250u44x-250a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}