Square D PowerPact LDA36400U31X L-Frame 3P 400A Electronic I-Line 80%
600A Frame | 400A | 3P | 25kA@240V, 18kA@480V, 14kA@600V | Electronic (MicroLogic 3.3 LI)
Schneider Electric offers the Square D PowerPact LDA36400U31X, a premium L-Frame 3-pole molded case circuit breaker delivering 400-ampere protection for critical electrical infrastructure and power distribution. With standard interrupting capacity of 25kA@240V, 18kA@480V, 14kA@600V, this MCCB operates at 600V AC to provide comprehensive and dependable circuit protection. The LDA36400U31X 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. The LDA36400U31X features i-line plug-on configuration with i-line plug-on connections and I-Line Bus Connection terminations for straightforward installation. Accepting (2) 3/0-500 kcmil Al/Cu conductors, this breaker measures 15.24" H x 7.09" W x 8.07" D and weighs ~30 lbs, providing a compact footprint for space-efficient installation in panelboards, switchboards, and motor control centers. Certified to UL 489, CSA, and IEC/EN 60947-2 international standards, the LDA36400U31X 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. Backed by Schneider Electric's global expertise in power distribution solutions, the LDA36400U31X 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: 25kA@240V, 18kA@480V, 14kA@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.
