The Schneider Electric Acti 9 iEM3165 is a DIN rail-mounted energy meter designed for sub-billing, cost allocation, and facility energy management in commercial and industrial installations. Rated at 63A with Class 1 accuracy and MID compliance, it provides certified measurement data suitable for regulatory reporting and tenant billing applications. The self-powered meter features a graphical display, BACnet protocol integration, and flexible DIN rail mounting (horizontal or vertical), making it ideal for electrical engineers, facilities managers, and energy auditors.