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Fluke 321 Clamp Meter (320 Series)

Fluke 321
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  • New smaller size fits easily into tight places
  • Precise measurements with 1.8% basic accuracy
  • Resolution up to 0.01A and 0.1 V
  • Measures AC current to 400 A
  • Measures AC volts to 600 V
  • Measures DC volts to 600 V (Fluke 322 only)
  • Resistance measurement to 400 Ω
  • Continuity for quick checking of shorts
  • Automatic low battery indicator
  • Display hold function
  • Two year warranty
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Product Information

Fluke 320 Series Clamp Meters

Big features, small package.
The Fluke 321 is designed to verify the presence of load current, AC voltage and continuity of circuits, switches, fuses and contacts. These small and rugged clamp meters are ideally suited for current measurements up to 400 A in tight cable compartments.

Safety Conformance.
All inputs are protected to EN61010-1, 600 V CAT III, UL, CSA and TüV listed.

What's In The Box

  • (2) AAA Alkaline batteries
  • Instruction card
  • Safety information sheet
  • Soft carrying case
  • Test leads


Voltage DC
Range 0 - 400 V (Fluke 322 only)
Resolution 0.1 V
Range 0 - 600 V (Fluke 322 only)
Resolution 1 V
Accuracy 1% ± 5 counts
Voltage AC
Range 0 - 400 V
Resolution 0.1 V
Range 0 - 600 V
Resolution 1 V
Accuracy 1.2% ± 5 counts (50 - 400 Hz)
AC Response Averaging
Current AC
Range 0 - 400 A
Resolution 0.1 A
Range 0 - 40 A (Fluke 322 only)
Resolution 0.01 A
Accuracy 1.8% ± 5 counts (50 - 60 Hz)
Accuracy 3.0% ± 5 counts (60 - 400 Hz)
AC Response Averaging
Range 0 - 400 Ω
Resolution 0.1 Ω
Accuracy 1% ± 5 counts
Continuity <= 30 Ω
Environmental Specifications
Operating Temperature -10°C to +50°C
Storage Temperature -30 °C to +60 °C
Operating Altitude 2,000 meters
Temperature De-rating Add 0.1 x specified accuracy for each °C above 28°C or below 18°C
Safety Specifications
Safety Rating IEC 1010-2-032, 600V CAT III
Mechanical & General Specifications
Size 190 x 63 x 35 mm
Weight 230 g
Warranty Two years
Battery Life 100 hours typical (2 AAA carbon zinc)
Jaw Opening 25 mm

Fluke 321 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Clamp Meters/Clamp Meters Template

TypeStandard Style
True RMS What's This?No
Maximum Current AC What's This?400 A
Minimum Current AC1 A (1000 mA)
Maximum Voltage AC600 V
Maximum Voltage DC600 V
Digits Display What's This?3.5
Counts What's This?4000 .
Detachable JawNo
Rotating Jaw / SwivelNo
Peak HoldNo
In-Rush Current What's This?No
Dual DisplayNo
Analog Bargraph on DisplayNo
Remote DisplayNo
Continuity What's This?Yes
Temperature (K T/C)No
Temperature (IR Sensor)No
Diode TestingNo
CAT Rating What's This?III
Overload ProtectorYes
True Power (KW)No
Apparent Power (VA) What's This?No
Power Factor (PF)No
Single Phase/Three PhaseSingle Phase
Crest FactorNo
Energy (KWh)No
Reactive Power (KVAR)No
Source/Simulate (Process Clamp)No

Test Equipment General Attributes

Power Supply VoltageBattery Powered
Safety ApprovalCSA
Data Logging What's This?No
Country of OriginChina


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