DCBM series

The first smart, compact and certified billing solution for high-power EV charging

Smart DC-metering for EV charging stations

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.

Main applications for LEM’s DCBM are: 

DCBM Series

DCBM series


  • 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


  • 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 and authentication
  • 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)

LEM’s DCBM series is the first to comply to European standards

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, Compliant with applications using VDE-AR-E-2418-3-100

Download DCBM 400/600 series documentation

Title Type
Baumusterprüfbescheinigung certificate

Certification documents

Product overview

Product documentation

Installation manual (EN/DE/FR) Product documentation
Bedienungsanleitung – Anzeige (DE) Product documentation
Operation manual Product documentation
3D DCBM_40x0 Technical resources

3D DCBM_60x0 solid works


Technical resources
LEM launches innovative and certified DC meter solution for electric vehicle chargers Press release