Square D PowerPact JJL34250WU43X J-Frame 3P 250A Mission Critical Unit Mount
250A Frame | 250A | 3P | 100kA@240V, 65kA@480V, 25kA@600V | Electronic Mission Critical (MicroLogic 5.2A LSI)
The PowerPact JJL34250WU43X from Schneider Electric's Square D product line is a J-Frame 3-pole 250-amp circuit breaker designed for professional electrical installations and industrial systems. This MCCB delivers extra-high interrupting capacity of 100kA@240V, 65kA@480V, 25kA@600V at 480Y/277V AC for dependable overcurrent protection performance. The JJL34250WU43X 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 unit mount breaker features lug (unit mount) connections with AL250JD Lug terminations, accepting 3/0-350 kcmil Al/Cu conductors for versatile wiring applications. With overall dimensions of 5.90" H x 4.50" W x 3.63" D and weighing ~12 lbs, the JJL34250WU43X delivers J-Frame frame protection in a space-efficient package suitable for dense electrical equipment layouts. UL 489 listed and CSA C22.2 No.5 certified, the JJL34250WU43X meets IEC/EN 60947-2 international standards for global project specification and acceptance. Applications include feeder circuit protection, branch circuit protection, motor control center installations, panelboard and switchboard applications, and industrial power distribution systems requiring J-Frame frame-class protection capabilities. Backed by Schneider Electric's global expertise in power distribution solutions, the JJL34250WU43X ensures dependable protection for critical electrical infrastructure with comprehensive factory warranty coverage and support.
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.
