Electrolyzer stack end plate assembly with fluid-isolating insert(s)

An electrolyzer system comprising:

• a stack of at least one electrolyzer cell, the stack further including:
• a current collector of the at least one electrolyzer cell;
• an end plate assembly;
• an isolation plate, the isolation plate being positioned between the end plate assembly and the current collector to electrically isolate the current collector from the end plate assembly;
• and
• wherein the end plate assembly includes at least one fluid channel to allow a fluid to pass through the end plate assembly, the at least one fluid channel being in fluid communication with at least one fluid channel through the current collector and the isolation plate, and wherein the end plate assembly comprises:
• an end plate;
• and
• a fluid-isolating insert residing, at least in part, within a pocket in the end plate, the fluid-isolating insert including at least one electrically-isolating fluid channel that defines, at least in part, the at least one fluid channel of the end plate assembly, the fluid-isolating insert increasing an effective length of a fluid conduction path between the current collector and the end plate through the at least one fluid channel of the end plate assembly.