Square D PowerPact LDL34400WU54X L-Frame 3P 400A Mission Critical UM
600A Frame | 400A | 3P | 25kA@240V, 18kA@480V, 14kA@600V | Electronic Mission Critical (MicroLogic 6.3E LSIG)
The Schneider Electric Square D PowerPact LDL34400WU54X is a L-Frame molded case circuit breaker rated at 400 amperes for 3-pole applications in commercial and industrial power distribution systems. This premium breaker delivers standard interrupting capacity rated at 25kA@240V, 18kA@480V, 14kA@600V, operating at 480Y/277V AC for reliable overcurrent protection in critical electrical infrastructure. The LDL34400WU54X features a MicroLogic 6.3E 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 AL400L61K3/AL600LS52K3 terminations, accepting (2) 2/0-500 kcmil Al/Cu conductors for versatile wiring applications. With overall dimensions of 10.24" H x 5.51" W x 5.67" D and weighing ~25 lbs, the LDL34400WU54X delivers L-Frame frame protection in a space-efficient package suitable for dense electrical equipment layouts. Compliant with UL 489, CSA C22.2 No.5, and IEC/EN 60947-2 international standards, the LDL34400WU54X carries multiple certifications for worldwide acceptance and specification. Ideal for commercial buildings, industrial facilities, data centers, healthcare facilities, and critical infrastructure power distribution requiring reliable 400A 3-pole overcurrent protection. The PowerPact LDL34400WU54X represents Schneider Electric's commitment to electrical safety, performance, and reliability in power distribution equipment for professional electrical installations worldwide.
Key Features
This PowerPact MCCB features Electronic Mission Critical (MicroLogic 6.3E LSIG) trip protection rated 400A at 480Y/277V AC. Frame size: 600A. Interrupting capacity: 25kA@240V, 18kA@480V, 14kA@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.
