Square D PowerPact LLL36400RU53X L-Frame 3P 400A Field-Interch Electronic 100%
600A Frame | 400A | 3P | 125kA@240V, 100kA@480V, 50kA@600V | Electronic Field-Interch 100% (MicroLogic 5.3E LSI)
Square D's PowerPact LLL36400RU53X L-Frame circuit breaker provides 400A 3-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 LLL36400RU53X 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. The LLL36400RU53X features unit mount configuration with lug (unit mount) connections and AL400L61K3/AL600LS52K3 terminations for straightforward installation. Accepting (2) 2/0-500 kcmil Al/Cu conductors, this breaker measures 10.24" H x 5.51" W x 5.67" D and weighs ~25 lbs, providing a compact footprint for space-efficient installation in panelboards, switchboards, and motor control centers. Compliant with UL 489, CSA C22.2 No.5, and IEC/EN 60947-2 international standards, the LLL36400RU53X 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. Backed by Schneider Electric's global expertise in power distribution solutions, the LLL36400RU53X ensures dependable protection for critical electrical infrastructure with comprehensive factory warranty coverage and support.
Key Features
This PowerPact MCCB features Electronic Field-Interch 100% (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.
