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EQ Energy Meters: B23 112-500 & B23 312-500

B23 are precise UL energy meters for three-phase measuring. The UL range includes performance levels “Steel” B23 112-500 and “Silver” B23 312-500 meters. Both meters feature direct connections up to 65 A and are installed on DIN rail, which makes them suitable for a wide range of applications. B23 UL energy meters are UL Recognized, ANSI C12.1 and IEC approved. B23 UL energy meters can be integrated with ABB Ability™ energy and asset manager to help achieve higher levels of energy efficiency.


  • Energy efficient
  • Precise and reliable
  • Wide range of measurements
  • Easy communication and integration in cloud-based applications
  • Easy direct electrical connection
  • Space optimization


  • Active/reactive/apparant power, power factor, import/export power, frequency, voltage, current energy measurments
  • Modbus RTU, infrared port, ABB Ability Edge industrial gateway
  • Lower power consumption (1.6VA)
  • Compact modular design blends in with MCBs, RCDs, SPDs, and other modular DIN rail products
  • ANSU C12.1 Class 1 Ambient temp -40° to + 70°C
  • No derating up to 4,000m

Technical Specifications

  • Download the B23 datasheet to see all technical specifications

Supported Measurements

Performance Level Steel

  • Active Energy
  • Class 1
  • Pulse output
  • Alarm

Performance Level Silver

  • Steel +
  • Reactive energy
  • Apparent energy
  • Import/export energy
  • Class 1
  • Resettable energy register
  • Tariffs
  • Fixed I/O


  • Data centers
  • EV charging
  • Renewable energy
  • Critical power
  • Food and beverage

Standards & Certifications

  • UL 61010-1 and UL 61010-2-030
  • ANSI C12.1 approved