PicoScope 4444 accessories

High-resolution differential USB oscilloscope

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40 A AC/DC current probe, D9 connector

The TA300 is a 100 kHz bandwidth, single-range 40 A AC or DC current probe using the D9 connector specific to the PicoScope 4444 differential oscilloscope. On connection with the scope, the probe is instantly sensed and the vertical range automatically set up in PicoScope software. The probe is also powered by the scope through the D9 connector.

Note: When using the PicoScope 4444 with USB power (no AC adaptor connected), sensor power is limited to a maximum of 3 x TA300 probes at once.

Title Language Issue Size Updated All products All languages All documents Status
TA300 AC/DC current probe user’s guide English 1 104 KB Mar 10 2017 English open
TA300 Current Probe EU Declaration of Conformity English 1 285 KB Mar 30 2017 English open
TA300 Specifications
Electrical data (All accuracies are stated at 23 °C ± 1 °C)
Nominal current  40 A AC peak or DC
Measuring range (s) 40 A 
Overload capacity 500 A (60 s)
Output sensitivity 100 mV/A
Accuracy ±1% of reading ± 2 mA
Resolution ±1 mA
Gain variation ±0.02% of reading/°C
Frequency range DC to 100 kHz (0.5 dB)
Power supply 5 V nominal from PicoScope 4444
Load impedance (minimum) > 100 kΩ and ≤ 100 pF
General data
Conductor size 25 mm diameter
Output cable and connectors 2 m long screened cable terminated with D9 plug
Operating temperature 0 °C to +50 °C
Storage temperature –20 °C to +85 °C
Safety and environment
Safety compliance EN 61010-1
EN 61010-2-032
Overvoltage category 300 V CAT III
Pollution degree 2
EMC compliance EN 61326-2-2
Environmental compliance RoHS and WEEE
General environment for safe use Indoor use only
Max. altitude for safe use 2000 m
Temperature range for safe use 0 °C to 50 °C
Max. humidity for safe use 80% RH for temperatures up to 31 °C, decreasing linearly to 40% RH at 50 °C
Max. voltage on uninsulated conductors 300 V AC RMS or DC
Max. frequency on uninsulated conductors 1 kHz