The Victron Energy Modular Fuse Holder for MEGA Fuse (CIP100200100) from Nomadic Supply Company takes Mega Fuses up to 400 amps and up to 48 volts and can be used with the optional high amperage busbar (sold separately). The dovetail feature allows interlocking multiple fuse holders.
Victron Energy Modular Fuse Holder for MEGA Fuse (CIP100200100) Warranty Info