Square D PowerPact LLL46400U53X L-Frame 4P 400A Electronic MCCB 80%
600A Frame | 400A | 4P | 125kA@240V, 100kA@480V, 50kA@600V | Electronic (MicroLogic 5.3E LSI)
Square D's PowerPact LLL46400U53X L-Frame circuit breaker provides 400A 4-pole circuit protection engineered for commercial and industrial electrical distribution systems. Featuring very high interrupting capacity rated at 125kA@240V, 100kA@480V, 50kA@600V and operating at 600V AC, this breaker delivers proven and reliable overcurrent protection performance. The LLL46400U53X 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. This unit mount breaker features lug (unit mount) connections with AL400L61K4/AL600LS52K4 terminations, accepting (2) 2/0-500 kcmil Al/Cu conductors for versatile wiring applications. With overall dimensions of 10.24" H x 7.09" W x 5.67" D and weighing ~30 lbs, the LLL46400U53X 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 LLL46400U53X 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 4-pole overcurrent protection. As part of the proven PowerPact family, the LLL46400U53X delivers dependable protection backed by Schneider Electric's extensive global engineering heritage and comprehensive industry-leading technical support resources.
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.
