Starting at $345.00
  • Usually ships in 2-3 weeks



  • Measures 1, 2, or 3 phases in 2, 3, or 4 wire configurations
  • Voltage range: ±20% of nominal
  • Use with wide choice of CTs (sold separately)
  • Accuracy: ±0.45% of reading + 0.05% FS through 25th harmonic
  • Easy to install and wire
  • Pulse output
  • Bidirectional metering
  • Metering of variable frequency drives
  • Line powered; No external supply required
  • Detachable terminal blocks

This product is an accessory for the following products:


The HOBO WNB-3D WattNode Series Transducer Sensors provide accurate measurements at low cost for sub-metering, net-metering, energy management, and performance contracting applications. This WattNode Delta-connection kWh Transducer works with Magnelab AC Current Transformers and a Pulse Input Adapter to provide True RMS kilowatt hours of energy used, even for loads with non-sinusoidal waveforms. Because these sensors tie directly into the line, they should be used only by qualified personnel. This model supports a 3-phase Delta-connection of 208/240 VAC.