High Accuracy DC Current Sensor – HT800M by Telcon

Product Description

The High Accuracy DC Current Sensor by Telcon is a closed loop hall effect sensor that takes an 800A signal and outputs a corresponding 0-20mA signal.

The high accuracy DC current sensor by Telcon is used for applications requiring an accurate, fast response signal proportional to the primary current being measured (AC or DC). It has a 4000:1 ratio (outputting 20mA at 800A). The output signal current type will reflect the current type of the primary (AC->AC or DC->DC). The diameter of the opening is 43 mm.

Rated for 800A continuous operation, the HT800M offers high accuracy, high bandwidth and high electrical isolation. It weighs 525 grams. It has 0.1% linearity and 0.5% accuracy overall. The HT800M is a closed loop Hall Effect Current Transformer that is suitable for Panel Mounting.

The HT800M is UL listed, File No. E198118

When searching for compatible power meters to this high accuracy DC current sensor, look for DC meters on our website that accept an Adc input. These meters will show the following symbol as the input:

DC Amperage

You can view all of our current sensors here.


  • Primary amperage range: 800 Adc or Aac
  • Outputs 0-20mA
  • Limit of Linearity: ± 1300A peak value
  • Linearity: 0.1% of nominal primary current
  • Overall Accuracy: 0.5% of nominal primary current
  • Powered by ±12 to ±15V
  • Delay time: < 1.0 μS
  • Temperature: -10 to +85 °C
  • Zero Offset/Temperature: < 3μA/°C
  • Bandwidth: DC to 150kHz at -1dB
  • Proof Stress Voltage: 9.5kV a.c., rms for 1 minute

Data Sheet

 Technical Specs


UL Listed


Made in USA

ISO 9001

rohs compliant

Additional information

Weight0.2 lbs
Dimensions4.1 x 3.9 x 3.5 in