{"product_id":"abb-xt4-250a-3p-molded-case-circuit-breaker-xt4-series-thermal-magnetic-tmf-100ka-480v","title":"ABB XT4 250A 3P Molded Case Circuit Breaker – XT4 Series – Thermal Magnetic (TMF) – 100kA @ 480V","description":"\u003cp data-start=\"144\" data-end=\"514\"\u003eBuilt to handle substantial electrical loads, this 250A molded case circuit breaker is part of the ABB SACE Tmax XT4 family, designed for high-demand commercial and industrial power distribution systems. It serves as a modern replacement for legacy T4L250TW breakers when used with the appropriate retrofit kit, ensuring smooth system upgrades.\u003c\/p\u003e\n\u003cp data-start=\"516\" data-end=\"773\"\u003eThis unit-mount MCCB installs into ABB ReliaGear neXT panelboards and ReliaGear SB switchboards. It utilizes fixed thermal and magnetic (TMF) trip elements to provide reliable long-time and instantaneous (LI) protection against overloads and short circuits.\u003c\/p\u003e\n\u003cp data-start=\"775\" data-end=\"1031\"\u003eWith an impressive interrupting capacity of up to 200kA at 240VAC and 100kA at 480VAC, this current-limiting breaker offers superior fault protection for critical infrastructure. Lugs are not included, allowing flexibility for custom wiring configurations.\u003c\/p\u003e\n\u003cp data-start=\"1038\" data-end=\"1060\"\u003e\u003cstrong data-start=\"1038\" data-end=\"1060\"\u003eVoltage and Rating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1062\" data-end=\"1265\"\u003e\n\u003cli data-section-id=\"jsa24t\" data-start=\"1062\" data-end=\"1087\"\u003eCurrent Rating: 250 A\u003c\/li\u003e\n\u003cli data-section-id=\"11n8kiy\" data-start=\"1088\" data-end=\"1147\"\u003eVoltage Ratings: 240VAC, 480VAC, 600VAC, 250VDC, 600VDC\u003c\/li\u003e\n\u003cli data-section-id=\"8ku12r\" data-start=\"1148\" data-end=\"1265\"\u003eAIC Rating:\n\u003cul data-start=\"1166\" data-end=\"1265\"\u003e\n\u003cli data-section-id=\"1f7tfat\" data-start=\"1166\" data-end=\"1184\"\u003e200kA @ 240VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1tt1ek\" data-start=\"1187\" data-end=\"1205\"\u003e100kA @ 480VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1c9m602\" data-start=\"1208\" data-end=\"1225\"\u003e50kA @ 600VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1pse832\" data-start=\"1228\" data-end=\"1245\"\u003e85kA @ 250VDC\u003c\/li\u003e\n\u003cli data-section-id=\"15wj78g\" data-start=\"1248\" data-end=\"1265\"\u003e75kA @ 600VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1272\" data-end=\"1294\"\u003e\u003cstrong data-start=\"1272\" data-end=\"1294\"\u003eKey Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1296\" data-end=\"1665\"\u003e\n\u003cli data-section-id=\"19b7p5r\" data-start=\"1296\" data-end=\"1347\"\u003eDevice Type: Molded Case Circuit Breaker (MCCB)\u003c\/li\u003e\n\u003cli data-section-id=\"drrqor\" data-start=\"1348\" data-end=\"1379\"\u003eSeries: XT4 (SACE Tmax XT4)\u003c\/li\u003e\n\u003cli data-section-id=\"bad5e\" data-start=\"1380\" data-end=\"1407\"\u003eNumber of Poles: 3-Pole\u003c\/li\u003e\n\u003cli data-section-id=\"pvjmxy\" data-start=\"1408\" data-end=\"1426\"\u003ePhase: 3 Phase\u003c\/li\u003e\n\u003cli data-section-id=\"hlwld3\" data-start=\"1427\" data-end=\"1470\"\u003eTrip Technology: Thermal Magnetic (TMF)\u003c\/li\u003e\n\u003cli data-section-id=\"ue0akg\" data-start=\"1471\" data-end=\"1497\"\u003eTrip Function Code: LI\u003c\/li\u003e\n\u003cli data-section-id=\"1myj8em\" data-start=\"1498\" data-end=\"1541\"\u003eTrip Function: Long-Time, Instantaneous\u003c\/li\u003e\n\u003cli data-section-id=\"nrtnak\" data-start=\"1542\" data-end=\"1595\"\u003eTrip Adjustability: Fixed Thermal, Fixed Magnetic\u003c\/li\u003e\n\u003cli data-section-id=\"pl9r6s\" data-start=\"1596\" data-end=\"1626\"\u003eMounting Style: Unit Mount\u003c\/li\u003e\n\u003cli data-section-id=\"4ns4eg\" data-start=\"1627\" data-end=\"1665\"\u003eTerminal Type: Lugs (Not Included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1672\" data-end=\"1700\"\u003e\u003cstrong data-start=\"1672\" data-end=\"1700\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1702\" data-end=\"1941\"\u003e\n\u003cli data-section-id=\"1s1an9q\" data-start=\"1702\" data-end=\"1745\"\u003eWire Range: 3\/0 AWG – 350 kcmil (Cu\/Al)\u003c\/li\u003e\n\u003cli data-section-id=\"196jdjv\" data-start=\"1746\" data-end=\"1774\"\u003eMax Wire Size: 350 kcmil\u003c\/li\u003e\n\u003cli data-section-id=\"vtiwjy\" data-start=\"1775\" data-end=\"1801\"\u003eMin Wire Size: 3\/0 AWG\u003c\/li\u003e\n\u003cli data-section-id=\"11s84x5\" data-start=\"1802\" data-end=\"1853\"\u003eStandards: CSA C22.2 No. 5, IEC 60947-2, UL 489\u003c\/li\u003e\n\u003cli data-section-id=\"1qeoijh\" data-start=\"1854\" data-end=\"1903\"\u003eApprovals: CCC, CE, CSA, cULus, IEC, KEMA, UL\u003c\/li\u003e\n\u003cli data-section-id=\"fzwkp4\" data-start=\"1904\" data-end=\"1941\"\u003eTemperature Rating: -25°C to 70°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1948\" data-end=\"1960\"\u003e\u003cstrong data-start=\"1948\" data-end=\"1960\"\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1962\" data-end=\"2029\"\u003e\n\u003cli data-section-id=\"mq9pch\" data-start=\"1962\" data-end=\"1976\"\u003eHACR Rated\u003c\/li\u003e\n\u003cli data-section-id=\"1wkky4h\" data-start=\"1977\" data-end=\"2004\"\u003eCurrent Limiting Design\u003c\/li\u003e\n\u003cli data-section-id=\"slogad\" data-start=\"2005\" data-end=\"2029\"\u003eReverse Feed Capable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"NEW","offer_id":48337526915321,"sku":"XT4LU3250AFL000XXX","price":1323.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/OOO_b5cd4f9d-b8bf-4559-a74b-fdd206e6952a.webp?v=1777565497","url":"https:\/\/mycircuitbreakers.com\/products\/abb-xt4-250a-3p-molded-case-circuit-breaker-xt4-series-thermal-magnetic-tmf-100ka-480v","provider":"My Circuit Breakers","version":"1.0","type":"link"}