Square D PowerPact LLL46400CU43X L-Frame 4P 400A Electronic MCCB 100%
600A Frame | 400A | 4P | 125kA@240V, 100kA@480V, 50kA@600V | Electronic (MicroLogic 5.3A LSI)
The Schneider Electric Square D PowerPact LLL46400CU43X is a L-Frame molded case circuit breaker rated at 400 amperes for 4-pole applications in commercial and industrial power distribution systems. This premium breaker delivers very high interrupting capacity rated at 125kA@240V, 100kA@480V, 50kA@600V, operating at 600V AC for reliable overcurrent protection in critical electrical infrastructure. The LLL46400CU43X features a MicroLogic 5.3A 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 LLL46400CU43X utilizes lug (unit mount) connections with AL400L61K4/AL600LS52K4 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 7.09" W x 5.67" D weighing ~30 lbs, optimizing installation density in electrical distribution equipment. Certified to UL 489, CSA, and IEC/EN 60947-2 international standards, the LLL46400CU43X 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 L-Frame frame interrupting performance. As part of the proven PowerPact family, the LLL46400CU43X 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 5.3A 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.
