Current probe

ETA5303 AC / DC current probe

ETA5303 is a universal oscilloscope current probe. It is compatible with more than 95% of the oscilloscopes on the market. Its frequency response is as high as 10KHz, ranging from 0.5A to 1400A (peak value), BNC output terminal. Connecting oscilloscope can accurately measure AC or DC current waveform. Three-position sliding switch on handle panel can choose range and ON/OFF.

Product characteristics

AC/DC dual-purpose

Current measurement range: 0.5A to 1400A


-Measurable cables

-Narrow clip design, easy to use in narrow space with dense wiring

-9V alkaline battery, 55 hours continuous operation

-Accurate measurement, analysis and display of distortion current waveforms and harmonics


150A current 10mV/A
Primary current2A…60A60A…100A100A…150A
Signal output accuracy%≤ 1.5% + 5mV≤ 2.5% + 5mV≤ 4.0% + 5mV
Phase shift-≤ 3°≤ 2.2°


1400A current 1mV/A
Primary current150A…800A800A…1400A



Signal output accuracy%≤2.5% + 1mV≤4.0% + 5mV



Phase shift-≤ 2°




Typical phase shift

Current range 10mV/A100 A AC

150 A DC

Current range 1mV/A1000 A AC

1400 A DC

Typical frequency response curveRefer to Figure 1.
Measuring current range2A~1400A peak
Maximum operating voltage600V CATⅢ
Frequency rangeDC to 10KHz （-3dB）
Typical battery types and lifetimes9V NEDA1604A, IEC6LR61 (about 55 hours)
Typical DC signal linearityRefer to Figure 1.
Refer to Figure 3.
Jaw size

Cable:  

Ø 39 mm

Ø 25.4 mm x 2

Female cable:  

50 x 12.5 mm

25 x 8 mm

Overall size236.5×97×44mm
Cable length2M
Weight520g
Operating temperature0 ℃ to + 50 ℃
Humidity95% RH or less (at 0~40 ℃)
Safety regulations

Meets EN61010-1/A2:1995

Meets EN61010-2-032:1995

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