Square D PowerPact LLA36400U31X L-Frame 3P 400A Electronic I-Line 80%
600A Frame | 400A | 3P | 125kA@240V, 100kA@480V, 50kA@600V | Electronic (MicroLogic 3.3 LI)
The PowerPact LLA36400U31X from Schneider Electric's Square D product line is a L-Frame 3-pole 400-amp circuit breaker designed for professional electrical installations and industrial systems. This MCCB delivers very high interrupting capacity of 125kA@240V, 100kA@480V, 50kA@600V at 600V AC for dependable overcurrent protection performance. The LLA36400U31X features a MicroLogic 3.3 LI 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 i-line plug-on breaker features i-line plug-on connections with I-Line Bus Connection terminations, accepting (2) 3/0-500 kcmil Al/Cu conductors for versatile wiring applications. With overall dimensions of 15.24" H x 7.09" W x 8.07" D and weighing ~30 lbs, the LLA36400U31X delivers L-Frame frame protection in a space-efficient package suitable for dense electrical equipment layouts. UL 489 listed and CSA C22.2 No.5 certified, the LLA36400U31X meets IEC/EN 60947-2 international standards for global project specification and acceptance. Applications include feeder circuit protection, branch circuit protection, motor control center installations, panelboard and switchboard applications, and industrial power distribution systems requiring L-Frame frame-class protection capabilities. Backed by Schneider Electric's global expertise in power distribution solutions, the LLA36400U31X ensures dependable protection for critical electrical infrastructure with comprehensive factory warranty coverage and support.
Key Features
This PowerPact MCCB features Electronic (MicroLogic 3.3 LI) 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.
