AEMC Instruments 2139.21 - 403 Clamp-on Multimeter - 1000 ACA, 2000 DCA, 1000 AC/DCV, True-RMS


The AEMC Instruments Model 403 True-RMS Clamp-on Meter provides a new standard for safety and measurement capability not available in any other clamp meter sold today. Safety Rated at CAT-IV 1000V, it is safe to operate in all electrical environments. It is rugged enough for the most demanding work environments and will withstand both dust and water spray with its IP54 rating. It is ergonomically designed and easily used by one hand, including function selection and button pushing even with a glove on. In addition to the standard measurement of volts, amps, frequency, resistance, diode checking and continuity, the Model 403 offers several unequaled functions including: True InRush™, Temperature measurement and more.


  • Measures up to 1000VAC (1400V peak), 1000VDC and AC and DC with resolution to 10mV
  • Measures up to 1000AAC and 2000ADC
  • Measures temperature in °F or °C using a K-type Thermocouple
  • Measures frequency to 20kHz with 0.1Hz resolution
  • Auto selects AC or DC measurement voltage
  • CAT-IV 1000V Rated
  • UL 94 flame retardant self-extinguishing
  • IP54 Rated
  • 10,000-count blue electroluminescent backlit display
  • True InRush® current measurement with 1mS capture
  • Delta relative function for tracking deviation from reference values
  • Adapter function to accept inputs from sensors and transducers with a millivolt output with user programmable scaling
  • Jaw opening up to 1.89"
  • Leads are constructed with a flexible silicone material

Additional Info

  • ACA
More Information
Display Digital
Features True-RMS
Manufacturer AEMC Instruments
Measurement AC Voltage, Continuity, DC Current, DC Voltage, Diode, Frequency, Resistance, Temperature
Rating CAT IV-1000V
Type Clamp-on Multimeters
Additional Skus 2139.21
UPC 685338110258
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