Square D PowerPact JJA34250WU54X J-Frame 3P 250A Mission Critical I-Line Plug-On
250A Frame | 250A | 3P | 100kA@240V, 65kA@480V, 25kA@600V | Electronic Mission Critical (MicroLogic 6.2E LSIG)
The Schneider Electric Square D PowerPact JJA34250WU54X is a J-Frame molded case circuit breaker rated at 250 amperes for 3-pole applications in commercial and industrial power distribution systems. This premium breaker delivers extra-high interrupting capacity rated at 100kA@240V, 65kA@480V, 25kA@600V, operating at 480Y/277V AC for reliable overcurrent protection in critical electrical infrastructure. The JJA34250WU54X 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 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 JJA34250WU54X 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 JJA34250WU54X 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 JJA34250WU54X 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: 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.
