This jumper serves as a connecting material for series connection of EVE GRADE A+ LiFePo4 batteries with 230Ah capacity and M6 adapters. No need to buy AL-CU (CUPAL) washers.
Fuse disconnector TOMZN DC 1P serves for retention of DC fuse 10x38mm. Suitable for electrical distribution of high voltage solar photovoltaics. It serves as a basic protection of gpV photovoltaic system.