Square D PowerPact LLL37030D27 L-Frame 3P 300A DC 500Vdc
600A Frame | 300A | 3P | 125kA@240V, 100kA@480V, 50kA@600V | Thermal-Magnetic (DC Adjustable)
The Schneider Electric Square D PowerPact LLL37030D27 is a L-Frame molded case circuit breaker rated at 300 amperes for 3-pole applications in commercial and industrial power distribution systems. This premium breaker delivers very high interrupting capacity rated at 125kA@240V, 100kA@480V, 50kA@600V, operating at 500V DC for reliable overcurrent protection in critical electrical infrastructure. The LLL37030D27 incorporates a TMD DC (D27) trip unit for reliable overcurrent protection including thermal overload and magnetic instantaneous response capabilities. This proven trip technology provides fixed protection characteristics precisely optimized for the L-Frame platform, ensuring consistent and dependable circuit protection across a wide range of operating conditions and fault scenarios. 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 LLL37030D27 delivers L-Frame frame protection in a space-efficient package suitable for dense electrical equipment layouts. UL 489 listed and CSA certified, the LLL37030D27 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. Backed by Schneider Electric's global expertise in power distribution solutions, the LLL37030D27 ensures dependable protection for critical electrical infrastructure with comprehensive factory warranty coverage and support.
Key Features
This PowerPact MCCB features Thermal-Magnetic (DC Adjustable) trip protection rated 300A 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.
