Following are the part numbers for the National Measurement Institute NMI M6-1 Pattern Approved- Kilowatt Hour Meters-1P/3P/3P+N - LCD Digital
Model ReferenceIEM3255 DIN-rail kWh meter - 5A or 1A external CTs, Modbus RS485, DI / DO --------- A9MEM3255-NMI
IEM3350 DIN-rail kWh meter - 125A direct connect, Modbus RS485 ---------- A9MEM3350-NMI
Features:
- Meter verification report available upon request.
- Meters verified in accordance to National Measurement Institute NITP-14

For more information and meters please check the following link:
https://download.schneider-electric.com/files?p_enDocType=Catalog&p_File_Name=PLSED309005EN_Web.pdf&p_Doc_Ref=PLSED309005EN_Web