Extech 400A Clamp Meter

Extech 400A Clamp Meter


The Extech 400A Clamp Meter is a compact autoranging 400A clamp with high accuracy for current measurements.


  • Continuity beeper and diode test
  • Overload protection for all ranges
  • Autoranging with auto power off
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Why Buy From Fondriest?


The Extech 400A AC Clamp Meter is a compact solution for current measurements in tight locations. The clamp meter's 0.9" (23mm) jaw is ideal for conductors up to 300MCM. The Extech 400A AC/DC Clamp Meter features additional functions to measure capacitance, frequency, temperature, and duty cycle. It also includes a general purpose type K bead wire temperature probe.

Notable Specifications:



  • AC current maximum resolution: 2, 20, 200, 400A (0.001A)
  • AC current accuracy: ±2.5%
  • DC voltage maximum resolution: 200mV, 2V, 20, 200V, 600V (0.1mV)
  • AC voltage maximum resolution: 00mV, 2V, 20V, 200V, 600V (0.1mV)
  • AC voltage accuracy: ±1.5%
  • DC voltage accuracy: ±1.2%
  • Resistance: 200, 2k, 20k, 200k, 2M, 20M (0.1Ω)
  • Continuity: beeper
  • Dimensions/weight: 7.9x2x1.4" (200x50x35mm) 7oz (200g)




  • AC current maximum resolution: 40, 400A (0.01A)
  • DC current maximum resolution: 40, 400A, (0.01A)
  • AC current accuracy: ±3%
  • DC current accuracy: ±2.5%
  • DC voltage maximum resolution: 400mV, 4V, 40V, 400V, 600V, (0.1mV)
  • AC voltage maximum resolution: 400mV, 4V, 40V, 400V, 600V, (0.1mV)
  • AC voltage accuracy: 2%
  • DC voltage accuracy: ±1.5%
  • Resistance: 400, 4k, 40k, 400k, 4M, 40M (0.1Ω)
  • Capacitance: 40nF, 400nF, 4uF, 40uF, 100uF, (0.01nF)
  • Frequency: 5Hz, 50Hz, 500Hz, 5kHz, 150kHz (0.001Hz)
  • Temperature: -58 to 1830 (F) -50 to 1000 (C)
  • Duty cycle: 0.5 to 99.0% (0.1%)
  • Continuity: beeper
What's Included:
  • (1) Set of test leads
  • (1) Case
  • (2) AAA Batteries
Image Part # Product Description Price Stock Order
Extech 400A Clamp Meter MA200 400A AC clamp meter
Usually ships in 1-2 weeks
Extech 400A AC Clamp Meter MA200-NIST 400A AC clamp meter, NIST traceable
Usually ships in 1-2 weeks
Extech 400A Clamp Meter MA220 400A AC/DC clamp meter
Usually ships in 1-2 weeks
Extech 400A Clamp Meter MA220-NIST 400A AC/DC clamp meter, NIST traceable
Usually ships in 1-2 weeks

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