• Extech 380947 400A True RMS AC/DC Mini Clamp Meter

True RMS mini-clamp with high current resolution

The compact Extech 380947 is a 400 Amp True RMS mini clamp meter. This meter has a small diameter jaw designed to reach in small areas while providing 1mA resolution and very low-current sensitivity. This mini clamp meter is useful for current and frequency related troubleshooting in plant maintenance, electrical, HVAC, and telecom work, as well as home electrical, fleet maintenance, marine, and motorcycle repairs. Comes with battery and manual.



400A True RMS AC/DC Mini Clamp Meter Features


  • 0.9" (23mm) jaw opening
  • True RMS measurements with 1mA AC resolution
  • Non-contact Frequency measurements to 10kHz through the clamp jaws
  • Fast 40 segment bargraph
  • One touch Auto Zero
  • Min/Max, Data hold and Auto power off


  • Specifications                  Range
    True RMS                         True RMS
    AC Current:                     4A/40A/100A/400A
    Resolution                      1mA/10mA/100mA/100mA
    Accuracy                         ±(1.5% +3d)
    DC Current                      40A/400A
    Resolution                      10mA/100mA
    Accuracy                         ±(1.0% +2d)
    AC Voltage:                    
    Resolution                     0.1V
    Accuracy                        
    DC Voltage:                    
    Resolution                      0.1V 0.1V
    Accuracy                         
    Resistance                    — 400Ω —
    Resolution                      0.1Ω
    Accuracy                       ±(1.5% +2d)
    Frequency:                     10kHz
    Resolution                       0.01Hz
    Accuracy                         ±(0.5% +2d)
    Dimensions:                  7.2x2.5x1.4" (183x64x36mm)
    Weight:                          6.2 oz (190g)




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    Extech 380947 400A True RMS AC/DC Mini Clamp Meter


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