Square D PowerPact JLL37125D81 J-Frame 3P 125A DC 500Vdc
250A Frame | 125A | 3P | 125kA@240V, 100kA@480V, 50kA@600V | Thermal-Magnetic (DC Adjustable)
The PowerPact JLL37125D81 from Schneider Electric's Square D product line is a J-Frame 3-pole 125-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 500V DC for dependable overcurrent protection performance. Featuring a TMD DC (D81) trip unit, the JLL37125D81 delivers dependable thermal overload and magnetic short-circuit protection for continuous operation. The fixed trip characteristics are factory-calibrated for optimal protection performance, providing reliable overcurrent sensing and fast fault interruption across the full range of anticipated operating conditions. The JLL37125D81 features unit mount configuration with lug (unit mount) connections and AL175JD/AL250JD Lug terminations for straightforward installation. Accepting 4-4/0 AWG Al/Cu conductors, this breaker measures 5.90" H x 4.50" W x 3.63" D and weighs ~12 lbs, providing a compact footprint for space-efficient installation in panelboards, switchboards, and motor control centers. UL 489 listed and CSA certified, the JLL37125D81 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. As part of the proven PowerPact family, the JLL37125D81 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 Thermal-Magnetic (DC Adjustable) trip protection rated 125A at 500V DC. Frame size: 250A. 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.
