Tips for choosing a clamp meter

Clamps, Fundamentals

Fluke's assortment of clamp meters has been engineered to address a wide variety of needs, from routine tasks to specialty projects.

The quick-reference chart below offers a brief overview of features most commonly requested by technicians and electricians. For more detailed specifications, refer to the Fluke Clamp Meters Solutions for every need.

ModelsUser groups
32X family:
323, 324, 325
  • Residential/commercial electricians
  • HVAC contractors
  • Light industrial users

Differentiating features

  • True-rms ac voltage and current for accurate measurement of non-linear signals
  • Fits in pockets due to slim ergonomic design
  • Temperature measurement available on 324 and 325
ModelsUser groups
37X FC family:
374FC, 375FC, 376FC
37X family:
373, 381
  • Industrial electricians
  • Utility and industrial maintenance
  • Facility maintenance

Differentiating features

  • Offers more features, handles higher current measurements
  • iFlex: Flexible probe measures ac current in tight or crammed spaces; included in 376FC and 381; compatible with 374FC and 375FC
  • Offers true-rms plus low-pass filter for testing motors and drives
  • MIN MAX, average and inrush recording to capture variation automatically
  • 381 offers detachable screen (boosts safety), so technician can be 2 places at 1 time; has a rare earth magnet on back
  • Ergonomic design fits hands; can be used when wearing protective equipment
ModelsUser groups
Specialty clamps:
365, 368FC, 902FC, 35X
  • HVAC (902FC measures microamps and temperature)
  • Industrial
  • Utilities
  • Residential/commercial

Differentiating features

365: detachable jaw clamp

  • Detachable jaw permits:
    • easier wire access
    • easier display viewing
  • Built-in flashlight to help ID wires
  • Ranges for current are slightly lower than others
  • Jaw is smaller, so it fits in tighter spaces
  • Includes hanging strap

902FC: HVAC clamp

  • Measures in microamps
  • Direct temperature measurement

368FC, 369FC: Leakage clamp

  • Measures leakage current with 3 mA range
  • Resolution: 1µ (accurate)

35X: High current clamp

  • For higher currents, up to 2000 A ac+dc, true-rms
  • Has a bigger, extra-wide jaw for large conductors that carry higher currents
  • Inrush current measurement