Square D PowerPact LLL36400U53X L-Frame 3P 400A Electronic MCCB 80%
600A Frame | 400A | 3P | 125kA@240V, 100kA@480V, 50kA@600V | Electronic (MicroLogic 5.3E LSI)
Engineered for demanding electrical systems, the Square D PowerPact LLL36400U53X is a L-Frame 400A 3-pole molded case circuit breaker with very high interrupting capacity. Rated at 125kA@240V, 100kA@480V, 50kA@600V and operating at 600V AC, it provides reliable and consistent protection for power distribution infrastructure applications. The LLL36400U53X features a MicroLogic 5.3E 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. Configured for unit mount installation, the LLL36400U53X utilizes lug (unit mount) connections with AL400L61K3/AL600LS52K3 terminations designed for reliable conductor termination. The unit accommodates (2) 2/0-500 kcmil Al/Cu conductors within compact overall dimensions of 10.24" H x 5.51" W x 5.67" D weighing ~25 lbs, optimizing installation density in electrical distribution equipment. Compliant with UL 489, CSA C22.2 No.5, and IEC/EN 60947-2 international standards, the LLL36400U53X 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 LLL36400U53X 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 (MicroLogic 5.3E LSI) trip protection rated 400A at 600V AC. Frame size: 600A. 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.
