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DCBM 400 & 600

DCBM 400/600 Series - Direct Current Billing Meter - A smart, compact and certified billing solution for high power EV charging


Smart and compact, the Direct Current Billing Meter (DCBM) gives charging station providers the ability to deliver a ‘gas station’ like experience, using an LCD display to show real time measurements, energy, alarms and legal data. 
An excellent solution for retrofit and new DC fast charging stations from 25 to 400 kW, the DCBM uses industry standard data protocols. The results are secured communication, authentic billing, easy connectivity to Cloud services and a faster certification process.


  • State-of-the-art LEM DC measurement
  • Shaped for industrial constraints
  • Easy integration for retrofit and new infrastructures
  • "Plug&Play" software integration
  • Flexible integration with busbars or cables
  • OCMF readouts compliant with S.A.F.E
  • Compliant for energy billing or parking time billing
  • System monitoring


  • EN 50470-1:2006
  • EN 50470-3:2006
  • PTB-A 50.7
  • PTB-A 20.1
  • CISPR32 Class-B emission
  • IEC 62052-11:2003
  • IEC 61000-6-2:2016
  • IEC 61000-6-3:2016
  • UL94-V0
  • Complies with applications using VDE-AR-E-2418-3-100


  • Proprietary split concept
  • Compliant with legal metrology for billing systems
  • Range of operation 150…1000 V DC
  • Two sizes: Imax 400A and Imax 600A,
  • Robust design with wide current terminals, compliant with busbars
  • Bi-directional energy metering (V2G)
  • Accuracy Class B, -40°C to 85°C
  • Compliant with 4-wire measurement
  • Cable loss compensation
  • Ethernet communication with HTTP/HTTPS
  • Signed data readouts in OCMF or LEM format
  • Real-time monitoring of current / voltage / temperature / energy
  • Integrated display with backlight
  • Transaction handling with start & stop tags and user data fields andauthentication
  • Auxiliary power supply range +12 ... +48 V DC
  • DIN rail 35mm and screw mounting
  • Length of Datalink cable from 30 cm up to 3.5 m
  • Reinforced insulation at 1000 VDC, OVC II, Uimp 8 kV
  • Sealing of terminals and interfaces
  • IP20 case rating
  • Support of NTP time sync., static/DHCP IP addressing
  • Event detections (over-temperature, time synchronization, detection of incorrect voltage connection)


  • Electric vehicle charging infrastructures (https://www.lem.com/en/evs-chargers)
  • Data centers
  • DC grids & energy monitoring (https://www.lem.com/en/smart-grid)
  • Energy storage, renewables (https://www.lem.com/en/renewable-energies)





    Product overview

    Product documentation


    Product documentation

    Installation manual (EN/DE/FR)

    Product documentation

    Operation manual

    Product documentation

    Communication protocol manual

    Product documentation

    3D Model DCBM 400

    Technical resources

    3D Model DCBM 600 - SolidWorks

     3D Model DCBM 600 - STEP 

    Technical resources

    Baumusterprüfbescheinigung certificate

    Certification documents

    Bedienungsanleitung – Anzeige (DE)

    Product documentation