With extremely large size jaws with capacity of 58mm (2.3") the Fluke 353 can be used to accurately test medium, large and even multiple conductors at the same time.
Once attached to a conductor this clamp meter can be used to measure current levels across three ranges of 40A, 400A and 2000A (1400 AC rms) for both AC and DC modes. This tester also contains a crest factor mode which is available at either 50 or 60Hz.
Test readings are shown automatically on the LCD screen on the front of the 353 and it is also possible to generate MAX, MIN and AVG functions as well based upon this testing data. The screen is even backlit, making seeing the tester easy in darkened or poor lighting conditions.
It is also possible to hold a test reading on screen using a data hold function and the 353 also includes a low-pass filter which smooths out noisy loads and ensures reading stability.
An upgraded version of the Fluke 353 - the Fluke 355 - contains the ability to carry out additional measurements such as voltage and resistance.
Spend £150+ (Ex VAT) on any qualified Fluke or Beha-Amprobe product(s) and claim a free tool of your choice from the list at Fluke Promotion. Valid February 17 2025 - July 31 2025.
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Technical Information
Specification
Current measurement dc and ac 10 Hz to 100 Hz
Range : 40 A
Resolution: 10 mA Accuracy, A: 1.5 % rdg + 15 digits Trigger Level for Inrush: 0.50 A Trigger Level for Hz Filter OFF: 2.50 A Trigger Level for Hz Filter ON: 0.50 A
Range : 400 A
Resolution: 100 mA Accuracy, A: 1.5 % rdg + 5 digits Trigger Level for Inrush: 5.0 A Trigger Level for Hz Filter OFF: 2.5 A Trigger Level for Hz Filter ON: 2.5 A
Range : 2000 A; 1400 ac rms
Resolution: 1 A Accuracy, A: 1.5 % rdg + 5 digits Trigger Level for Inrush: 5 A Trigger Level for Hz Filter OFF: 8 A Trigger Level for Hz Filter ON: 8 A
Crest Factor (50/60 Hz)
Range : 40 A
Crest Factor* : 2 @ 33 A, 2.4 @ 27 A
Range : 400 A
Crest Factor* : 2 @ 330 A, 2.4 @ 270 A
Range : 2000 A; 1400 ac rms
Crest Factor* : 2 @ 1000 A, 2.4 @ 833 A
Current measurement ac 100.1 Hz to 1 kHz
Range : 40 A
Resolution: 10 mA Accuracy > 10 A : 3.5 % rdg + 15 digits Trigger Level for Inrush: 0.50 A Trigger Level for Hz Filter OFF : 2.50 A Trigger Level for Hz Filter ON : 0.50 A
Range : 400 A
Resolution: 100 mA Accuracy > 10 A : 3.5 % rdg + 5 digits Trigger Level for Inrush: 5.0 A Trigger Level for Hz Filter OFF : 2.5 A Trigger Level for Hz Filter ON : 2.5 A
Range : 2000 A; 1400 ac rms
Resolution: 1 A Accuracy > 10 A : 3.5 % rdg + 5 digits Trigger Level for Inrush: 5 A Trigger Level for Hz Filter OFF : 8 A Trigger Level for Hz Filter ON : 8 A
Voltage measurement (355 only) dc and ac 10 Hz to 100 Hz (600 V and 1000 V ranges have 10 % over range to 660 V and 1100 V respectively.)
Range : 4 V
Resolution: 1 mV Accuracy: 1 % rdg + 10 digits Trigger Level for Hz Filter OFF: 0.050 V Trigger Level for Hz Filter ON: 0.050 V
Range : 40 V
Resolution: 10 mV Accuracy: 1 % rdg + 5 digits Trigger Level for Hz Filter OFF: 0.25 V Trigger Level for Hz Filter ON: 0.25 V
Range : 400 V
Resolution: 100 mV Accuracy: 1 % rdg + 5 digits Trigger Level for Hz Filter OFF: 6 V Trigger Level for Hz Filter ON: 6 V
Range : 600 V ac rms
Resolution: 1 V Accuracy: 1 % rdg + 5 digits Trigger Level for Hz Filter OFF: 6 V Trigger Level for Hz Filter ON: 6 V
Range : 1000 V dc
Resolution: 1 V Accuracy: 1 % rdg + 5 digits
Voltage measurement (355 only) ac 100.1 Hz to 1 kHz (600 V and 1000 V ranges have 10 % over range to 660 V and 1100 V respectively.)
Range: 4 V
Resolution: 1 mV Accuracy: 3 % rdg + 10 digits Trigger Level for Hz Filter OFF: 0.050 V Trigger Level for Hz Filter ON: 0.050 V
Range: 40 V
Resolution: 10 mV Accuracy: 3 % rdg + 5 digits Trigger Level for Hz Filter OFF: 0.25 V Trigger Level for Hz Filter ON: 0.25 V
Range: 400 V
Resolution: 100 mV Accuracy: 3 % rdg + 5 digits Trigger Level for Hz Filter OFF: 6 V Trigger Level for Hz Filter ON: 6 V
Range: 600 V ac rms
Resolution: 1 V Accuracy: 3 % rdg + 5 digits Trigger Level for Hz Filter OFF: 6 V Trigger Level for Hz Filter ON: 6 V
Ohms measurement (355 only)
Range: 400 Ω
Resolution: 0.1 Ω Accuracy: 1.5 % + 5 digits
Range: 4 kΩ
Resolution: 1 Ω Accuracy: 1.5 % + 5 digits
Range: 40 kΩ
Resolution: 10 Ω Accuracy: 1.5 % + 5 digits
Range: 400 kΩ
Resolution: 100 Ω Accuracy: 1.5 % + 5 digits
Continuity beeper (355 only)
On at ≤ 30 Ω
Off at ≥ 100 Ω
Frequency measurement
Measurement range
5.0 Hz to 1 kHz
Resolution
0.1 Hz (15 Hz to 399.9 Hz); 1 Hz (400 Hz to 1 kHz)
Accuracy – 5.0 Hz to 100 Hz
0.2 % + 2 counts
Accuracy – 100.1 Hz to 1 kHz
0.5 % + 5 counts
Trigger level
Refer to current and voltage tables
*Add 2 % to error spec for CF > 2
General specifications
Batteries
Six 1.5 V AA NEDA 15 A or IEC LR6
Battery life (with typical usage, backlight off)
100 hours
Test leads
Rated to 1000 V
Weight
.814 kg (1.8 lb)
Jaw size
58 mm (2.28 in)
Dimensions (LxWxD)
300 mm x 98 mm x 52 mm (12 in x 3.75 in x 2 in)
Safety rating
IEC 61010-2-032, 600 V CAT IV, 1000 V CAT III
Environmental specifications
Operating temperature
32 °F to + 122 °F (0 °C to +50 °C)
Storage temperature
-4 °F to 140 °F (-20 °C to +60 °C)
Operating humidity
0 to 95 % (non-condensing)
Operating altitude
2000 m
Storage altitude
10,000 m
IP rating
42 (indoor use only)
Drop test requirements
1 m
EMI, RFI, EMC
FCC part 15, IEC/EN 61326-1:1997 class B, IEC/EN 61326:1997 3V/m, performance criteria B, EN61325
Spend £150+ (Ex VAT) on any qualified Fluke or Beha-Amprobe product(s) and claim a free tool of your choice from the list at Fluke Promotion. Valid February 17 2025 - July 31 2025.