Square D PowerPact LDA36400CU43X L-Frame 3P 400A Electronic I-Line 100%
600A Frame | 400A | 3P | 25kA@240V, 18kA@480V, 14kA@600V | Electronic (MicroLogic 5.3A LSI)
Square D's PowerPact LDA36400CU43X L-Frame circuit breaker provides 400A 3-pole circuit protection engineered for commercial and industrial electrical distribution systems. Featuring standard interrupting capacity rated at 25kA@240V, 18kA@480V, 14kA@600V and operating at 600V AC, this breaker delivers proven and reliable overcurrent protection performance. The LDA36400CU43X 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. The LDA36400CU43X 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 LDA36400CU43X 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 LDA36400CU43X 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: 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.
