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JM21NH-RMS Hall Current Sensor AC or DC Current Transducer


Our Price $121.00

10 - 24$8.00 / item
25 - 49$10.00 / item
50 - $13.00 / item

Add-on Leads

Product Description

The JM21NH is an AC or DC current transducer, also known as a Hall current sensor or a Hall effect current sensor and is a split-core current transducer.

  • Using Hall effect technology the JM21NH detects and transmit electrical currents
  • Together with a compatible meter users can track real time power usage
  • There are countless needs for real time power monitoring, some of which are listed below
  • Using a split-core design this current transducer is used for the electronic measurement of AC or DC waveform currents, with galvanic isolation between the primary circuit (power) and the secondary circuit (measurement)
  • 4-20mA DC output proportional to the RMS value of the primary current

Main characteristics
Current transformer and RMS circuit in a single case

  • Choice of primary current ranges: 5 to 250A
  • Output: 4-20mA
  • Accuracy: <2% of nominal primary current
  • Bandwidth: 50/60 Hz
  • Applications

    • Building automation and supervision
    • Environmental safety and condition monitoring
    • HVAC & pumps
    • Refrigeration
    • Small industrial motors
    • Fans
    • Lighting


    • High isolation between primary and secondary circuits
    • Compact case
    • Cost-effective solution
    • Easy installation


    • Self-powered and loop-powered versions
    • Operating range: -20°C to +60°C
    • Isolation test voltage : 3.5kV RMS / 50Hz / 1min
    • Sensing aperture : 21mm(for non-contact measurement)
    • UL94-V0 recognized materials
    • AC or DC sensing capability


    JM21NH-RMS Series Spec Sheet


    Model List

    • JM21NH-XXX-RMS
    • JM21NH-RMS
    • JM21XH