Siemens MLKA3 Lug Kit for P1 S1 S2 Panelboard 6AWG to 350KCMIL 3Ph

Siemens MLKA3 Lug Kit is a field-installable main/sub-feed lug assembly designed for the original P1 interior panelboard used in three-phase electrical distributions. It accepts 6 AWG to 350 kcmil conductors and supports copper or aluminum wiring, with current ratings published as 125 A and 250 A depending on configuration. The kit is intended for main lug or feed-through lug applications on 3-phase P1/S1/S2/SE panelboards and is mounted directly into the panel for panel-mount installations. Built for aluminum construction with copper/aluminum conductor compatibility, MLKA3 includes the necessary mounting hardware and labeling per installation instructions and is commonly specified for field upgrades or feeder reconfigurations in Siemens P1 panels. Distributor listings place the assembly at roughly 13.7 inches long by 8.7 inches wide and 4.6 inches high, enabling it to fit within standard P1 interior spaces. Use with original P1 panel interiors makes MLKA3 suitable for expanding or reconfiguring feeders in commercial or industrial three-phase systems.