{"product_id":"jja36250u44x-square-d-250a-3-pole-600v-iline-solid-state-mccb","title":"Square D - JJA36250U44X 250A 3-Pole 600V I-Line Solid State Circuit Breaker","description":"\u003cp\u003eThe \u003cstrong\u003eSquare D JJA36250U44X\u003c\/strong\u003e is a 3-pole, 250-amp solid-state molded case circuit breaker (MCCB) rated for 600VAC with I-Line plug-in mounting. Manufactured by Schneider Electric, the JJ-frame solid-state trip unit delivers precise, adjustable overcurrent protection for large industrial feeder circuits. Engineered for high-performance three-phase systems where accurate trip coordination and fault current management are critical.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eJJA36250U44X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eSquare D \/ Schneider Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmperage Rating\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e600VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Poles\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Type\u003c\/td\u003e\n\u003ctd\u003eSolid State (Electronic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Type\u003c\/td\u003e\n\u003ctd\u003eI-Line Plug-In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterrupting Rating\u003c\/td\u003e\n\u003ctd\u003e65kA @ 600V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eUL 489 Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Series\u003c\/td\u003e\n\u003ctd\u003eJJ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSolid-state electronic trip unit with adjustable long-time, short-time, and instantaneous settings\u003c\/li\u003e\n\u003cli\u003eI-Line plug-in mounting for quick installation in compatible Square D switchboards\u003c\/li\u003e\n\u003cli\u003e250-amp capacity for medium-to-large industrial feeder circuits\u003c\/li\u003e\n\u003cli\u003e3-pole configuration for three-phase 600V power systems\u003c\/li\u003e\n\u003cli\u003eHigh 65kA interrupting rating at 600V\u003c\/li\u003e\n\u003cli\u003eUL 489 Listed for NEC compliance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIndustrial feeder circuit protection in switchboards and MCCs\u003c\/li\u003e\n\u003cli\u003eLarge motor control center (MCC) incoming feeds\u003c\/li\u003e\n\u003cli\u003eManufacturing facility sub-panel main protection\u003c\/li\u003e\n\u003cli\u003eData center and critical infrastructure power distribution\u003c\/li\u003e\n\u003cli\u003eProcess control and heavy industrial equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is the Square D JJA36250U44X?\u003c\/h3\u003e\u003cp\u003eThe JJA36250U44X is a 250-amp, 3-pole, 600V solid-state I-Line plug-in MCCB from Square D used to protect large feeder and branch circuits in three-phase industrial and commercial electrical distribution systems.\u003c\/p\u003e\u003ch3\u003eHow does the solid-state trip unit differ from thermal magnetic on the JJA36250U44X?\u003c\/h3\u003e\u003cp\u003eUnlike a fixed thermal magnetic trip, the solid-state electronic trip unit on the JJA36250U44X allows engineers to adjust long-time delay, short-time pickup, and instantaneous trip thresholds, enabling precise system coordination and reducing nuisance tripping.\u003c\/p\u003e\u003ch3\u003eWhat is the interrupting capacity of the JJA36250U44X?\u003c\/h3\u003e\u003cp\u003eThe JJA36250U44X is rated at 65kA interrupting capacity at 600V, qualifying it for use in high fault-current industrial environments where large available short-circuit current is present.\u003c\/p\u003e","brand":"Square D \/ Schneider Electric","offers":[{"title":"New","offer_id":48395677630712,"sku":"JJA36250U44X-N","price":3299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/CB-JJA36250U44X-1.webp?v=1778786550","url":"https:\/\/alphabreakersandcontrols.com\/products\/jja36250u44x-square-d-250a-3-pole-600v-iline-solid-state-mccb","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}