Square D PowerPact JJA34250WU43X J-Frame 3P 250A Mission Critical I-Line Plug-On
250A Frame | 250A | 3P | 100kA@240V, 65kA@480V, 25kA@600V | Electronic Mission Critical (MicroLogic 5.2A LSI)
Engineered for demanding electrical systems, the Square D PowerPact JJA34250WU43X is a J-Frame 250A 3-pole molded case circuit breaker with extra-high interrupting capacity. Rated at 100kA@240V, 65kA@480V, 25kA@600V and operating at 480Y/277V AC, it provides reliable and consistent protection for power distribution infrastructure applications. The JJA34250WU43X features a MicroLogic 5.2A LSI electronic trip unit providing adjustable long-time delay, short-time delay, instantaneous, and ground fault protection settings for precise overcurrent coordination. This advanced electronic trip technology enables optimized protection curves, selective coordination with upstream and downstream protective devices, and significantly enhanced system reliability. This i-line plug-on breaker features i-line plug-on connections with I-Line Bus Connection terminations, accepting 3/0-350 kcmil Al/Cu conductors for versatile wiring applications. With overall dimensions of 9.70" H x 4.50" W x 5.17" D and weighing ~12 lbs, the JJA34250WU43X delivers J-Frame frame protection in a space-efficient package suitable for dense electrical equipment layouts. Certified to UL 489, CSA, and IEC/EN 60947-2 international standards, the JJA34250WU43X ensures compliance across diverse global markets and jurisdictions. This breaker serves commercial and industrial power distribution, feeder protection, motor circuit applications, and switchgear installations requiring dependable J-Frame frame interrupting performance. The JJA34250WU43X exemplifies Schneider Electric's PowerPact platform engineering excellence, delivering consistent protection performance with robust construction designed for long service life in demanding environments.
Key Features
This PowerPact MCCB features Electronic Mission Critical (MicroLogic 5.2A LSI) trip protection rated 250A at 480Y/277V AC. Frame size: 250A. Interrupting capacity: 100kA@240V, 65kA@480V, 25kA@600V. Designed for reliable overcurrent protection in industrial and commercial power distribution systems.
Applications
Suitable for main distribution panels, motor control centers, switchboards, and feeder circuit protection in industrial facilities, data centers, and commercial buildings. Compliant with UL 489, CSA C22.2 No.5, IEC/EN 60947-2, NOM, CCC, CE.
