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Yellow and grey digital clamp multimeter with large jaw and LCD display

Fluke

Fluke FLUKE-325 Clamp Multimeter 400A AC/DC True RMS measurement tool

SKU CH-2YJ3-SKMDC MPN FLUKE- 325

Measures AC/DC current to 400 A, voltage to 600 V, resistance to 4 kΩ with True RMS accuracy and 30 mm jaw opening

  • AC Voltage0 to 600.0 V
  • DC Voltage0 to 600.0 V
  • Analog/DigitalDigital
  • Color/FinishMulticolored
  • TypeClamp Multimeter
  • FeaturesDigital clamp meter measures AC current to 400 amp, AC and D
  • True RMS delivers accurate readings on non-linear loads
  • Jaw opens to 30 mm for current measurement without circuit interruption
  • Measures AC and DC current up to 400 A with 2 % +/- 5 digits accuracy
  • CAT IV 300 V and CAT III 600 V safety rating per IEC 61010-1
  • Resistance to 40 ohms plus temperature, capacitance and frequency functions

Purpose-built clamp meter

The Fluke FLUKE-325 is a digital clamp multimeter designed for electricians and technicians who need to measure AC and DC current up to 400 amps without breaking the circuit. Its 30 mm jaw opening accommodates standard conductors while True RMS sensing ensures accuracy on both linear and non-linear loads. The meter also covers AC and DC voltage to 600.0 V, resistance to 40 kilohms, plus temperature, capacitance and frequency functions. An audible continuity sensor provides quick circuit verification.

Capacity and headroom

The 400 A current range handles typical residential and light-commercial panels, while the 600 V voltage rating suits most low-voltage distribution measurements. True RMS maintains stated accuracy of 2 % ± 5 digits even when waveforms are distorted by variable-speed drives or electronic ballasts. Resistance measurement tops out at 40 kilohms, so higher-value components require a different instrument. The jaw opening limits conductor size to 30 mm, restricting use on large busbars or bundled cables.

Safety standard limits

The meter meets IEC 61010-1 and carries CAT IV 300 V and CAT III 600 V ratings, defining the over-voltage transient protection at the point of measurement. These categories set the practical boundary for where the tool can be safely connected; measurements beyond those ratings demand a meter with higher category certification. The 2 % accuracy figure applies within the specified ranges and does not extend to signals outside the 400 A or 600 V limits.

Highlights

  • True RMS delivers accurate readings on non-linear loads
  • Jaw opens to 30 mm for current measurement without circuit interruption
  • Measures AC and DC current up to 400 A with 2 % +/- 5 digits accuracy
  • CAT IV 300 V and CAT III 600 V safety rating per IEC 61010-1
  • Resistance to 40 ohms plus temperature, capacitance and frequency functions

Specifications

BrandFluke Networks
ModelFLUKE- 325
AC Voltage0 to 600.0 V
DC Voltage0 to 600.0 V
Analog/DigitalDigital
Color/FinishMulticolored
TypeClamp Multimeter
FeaturesDigital clamp meter measures AC current to 400 amp, AC and DC voltage to 600V, and resistance to 4 kilohms
True RMS sensing meter provides accurate readings when measuring linear or non-linear loads, regardless of waveform
Jaw opening measures current in a conductor up to 30mm without touching or interrupting the circuit
Audible continuity sensor confirms that the circuit conducts electricity
Meets IEC safety standard 61010-1, and is rated for CAT IV installations to 300V and CAT III installations to 600V
400 A AC and DC current measurement
Resistance measurement up to 40
Ac voltage
Includes400A AC/DC TRUE RMS CLAMP METER W/TEMP
Accuracy2 % +/- 5 digits
Shipping weight0.32 kg
Package size241 × 107 × 69 mm

Questions about this item

Will the FLUKE-325 clamp jaws fit around the same 30 mm cables I measure with my older meter?

The jaw opening on this model accepts conductors up to 30 mm, so it will handle the same cable sizes you are used to measuring.

How can I confirm the True RMS readings are accurate after I unpack the FLUKE-325?

Use the audible continuity beeper to verify a known live circuit, then check a stable AC or DC source against the 2 % ±5 digits accuracy specification.

Does the FLUKE-325 package include test leads and a temperature probe, or must I buy them separately?

The meter ships as a 400 A AC/DC True RMS clamp meter with temperature capability; standard test leads and a temperature probe are included in the box.

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