A power distribution system for a work machine includes a power electronics module having a set of power connectors to receive electrical power. A module rack has an opening for slidably receiving the power electronics module. A power bus assembly is mounted to the module rack. The power bus assembly has a set of power bus connectors located to be mechanically engaged by the set of power connectors of the power electronics module when the power electronics module is installed in the module rack. A gasket is interposed in a sealing arrangement between the power electronics module and the power bus assembly. The gasket is configured to extend completely around all power connectors of the set of power connectors and is configured to extend completely around each individual power connector of the set of power connectors.