Sealed power distribution unit for an electrical power distribution system

A power distribution unit, comprising:

• an enclosure;
• and
• power distributing means for distributing electrical power between a battery to a load application,
• wherein the enclosure comprises:
• an external casing having a closed end, an open end, a top surface, a bottom surface and opposing side surfaces, each of the opposing side surfaces having a support slot, and the bottom surface having one or more alignment guide;
• and
• an internal cartridge having a faceplate and a mounting plate, the mounting plate extending rearward from the faceplate, opposing sides of the mounting plate being configured to be slidably disposed within the support slots, the mounting plate having upper dielectric partitions protruding upwardly from a top face of the mounting plate and lower dielectric partitions protruding downwardly from a bottom face of the mounting plate,
• wherein the internal cartridge is configured to be inserted into the external casing through the open end,
• wherein the faceplate has a plurality of external interfaces adapted for connecting to the battery and to the load application,
• wherein the power distributing means is mounted on the mounting plate,
• wherein the enclosure is configured to be sealed from an external environment, and
• wherein the upper and lower dielectric partitions are configured to both maintain a separation between different voltage groups and define an insulating barrier between components of the power distributing means.