Square D PowerPact JLL34250WU54X J-Frame 3P 250A Mission Critical Unit Mount
250A Frame | 250A | 3P | 125kA@240V, 100kA@480V, 50kA@600V | Electronic Mission Critical (MicroLogic 6.2E LSIG)
The PowerPact JLL34250WU54X 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 very high interrupting capacity of 125kA@240V, 100kA@480V, 50kA@600V at 480Y/277V AC for dependable overcurrent protection performance. The JLL34250WU54X features a MicroLogic 6.2E LSIG 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 JLL34250WU54X 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 JLL34250WU54X 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. Backed by Schneider Electric's global expertise in power distribution solutions, the JLL34250WU54X ensures dependable protection for critical electrical infrastructure with comprehensive factory warranty coverage and support.
Key Features
This PowerPact MCCB features Electronic Mission Critical (MicroLogic 6.2E LSIG) trip protection rated 250A at 480Y/277V AC. Frame size: 250A. Interrupting capacity: 125kA@240V, 100kA@480V, 50kA@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.
