Square D PowerPact LLL37040D30 L-Frame 3P 400A DC 500Vdc
600A Frame | 400A | 3P | 125kA@240V, 100kA@480V, 50kA@600V | Thermal-Magnetic (DC Adjustable)
Schneider Electric offers the Square D PowerPact LLL37040D30, a premium L-Frame 3-pole molded case circuit breaker delivering 400-ampere protection for critical electrical infrastructure and power distribution. With very high interrupting capacity of 125kA@240V, 100kA@480V, 50kA@600V, this MCCB operates at 500V DC to provide comprehensive and dependable circuit protection. This breaker incorporates a factory-calibrated TMD DC (D30) trip unit providing both thermal overload and instantaneous magnetic short-circuit protection. The L-Frame platform's proven trip mechanism ensures reliable operation with consistent and repeatable protection characteristics for dependable circuit protection throughout the breaker's entire service life. This unit mount breaker features lug (unit mount) connections with AL600LS52K3 terminations, accepting (2) 2/0-500 kcmil Al/Cu conductors for versatile wiring applications. With overall dimensions of 10.24" H x 5.51" W x 5.67" D and weighing ~25 lbs, the LLL37040D30 delivers L-Frame frame protection in a space-efficient package suitable for dense electrical equipment layouts. UL 489 listed and CSA certified, the LLL37040D30 meets applicable standards for DC circuit protection applications worldwide. Suitable for DC power distribution, battery energy storage systems, photovoltaic solar installations, uninterruptible power supply systems, and DC motor circuits requiring reliable direct current interruption capability. The LLL37040D30 exemplifies Schneider Electric's PowerPact platform engineering excellence, delivering consistent protection performance with robust construction designed for long service life in demanding environments.
Key Features
This PowerPact MCCB features Thermal-Magnetic (DC Adjustable) trip protection rated 400A at 500V DC. 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.
