Victron Energy Gavazzi AC sensor Works with HUB-4 System Phases 1 to 3 Victron Energy Victron Energy REL200100000 €187.20 This AC current sensor is necessitated for the Hub-4 system, which is the system, which allows to use the Inverter Victron Multiplus Series 3000VA 48V with CEI-021 certified systems of gi & agrave; networked, from the second to fourth energy bill. Add to basket