MPPT WireBox - Tr The MPPT WireBox provides an extra level of safety, and is particularly useful if your MPPT Solar Charger is installed in a general access area. It covers all DC terminals, preventing accidental or inquisitive contact with terminal screws. There are various sizes available: MPPT WireBox-S 75-10/15 MPPT WireBox-S 100-15 MPPT WireBox-S 100-20 MPPT WireBox-M 100-30/50 &...