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Rayleigh Instruments RI-D18-100-C 100A Direct Connect Single Phase kWh Meter with RS485 Communication


  • 100A direct connected single phase energy meter
  • High definition LCD display with blue back-light
  • 18mm wide DIN rail mounting
  • Import active energy measurement
  • RS485 Modbus communication
  • Single module width DIN rail mounted
  • LED pulse indication
  • Simple programming and operation
  • Auto & manual page scrolling


The RI-D18-100-C Series forms part of the Rayleigh Instruments family of energy meters.

This compact (18mm DIN Rail mounting), single-phase, digital multifunction energy meter has been designed for the accurate measurement of energy consumption in residential, commercial, industrial, and utility applications. The direct connection of the unit to a 100A ac circuit means the meter does not require an additional current transformer.

This meter has a high definition LCD display with blue back-light and 10mm high digits allowing easy reading of the recorded value.

The meter is currently available in one version:-

  • With RS485 Modbus communication

The unit is housed in a compact single module width case suitable for 35mm DIN rail mounting.

Displayed Parameters

  • Phase to Neutral Voltage (V)
  • Phase Current (A)
  • Power Factor (PF)
  • Active Power (kW)
  • Reactive Power (kVAr)
  • Apparent Power (kVA)
  • Import Active Energy (kWh)

Additional Information

Manufacturer Rayleigh Instruments
Product Name / Options Price (ex VAT)
RI-D18-100-C - Single Phase kWh DIN Rail Meter 100A Direct - RS485/Modbus Call for Prices