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DP40 Discharge Probe

5.0 (3 reviews)

Safely discharge high voltage cables with the DP40 Discharge Probe, a reliable accessory for T&R PT30-10 Mk3 AC test set.

  • 40kV Maximum discharge voltage
  • 7.2kJ Maximum discharge energy
  • 6μF Maximum discharge capacitance
  • 60kΩ Resistance
  • 900mm Length
  • 5m Earth lead length
  • 6mm² Earth lead CSA
  • Highly flexible, clear silicone covered earth cable


The DP40 Discharge Probe is specifically designed to safely discharge high voltage cables after testing. It serves as a standard accessory for the T&R PT30-10 Mk3 AC test set, and it is also available for separate purchase. The instrument consists of a pointed probe that connects to a 5m long earth lead using surge resistors. It features an insulated handle and clear silicone insulation on the earth lead, enabling easy conductor inspection. The earth lead terminates with an M6 hooked crimp.

*Note: Please ensure that you NEVER connect this earthing probe to energized AC distribution systems.

Our partners, such as AcutestAlpha ElectronicsCuthbertson LairdNorwich Instrument Services, and PASS Ltd offer the DP40 Discharge Probe in the United Kingdom. Additionally, if you are located outside Great Britain, you can conveniently order the product through our worldwide distribution network.

DP40 Datasheet


Additional information

Weight2 kg

900 mm

3 reviews for DP40 Discharge Probe

  1. Benjamin Hall

    Have been using the DP40 regularly for quite some time. A simple instrument that always does the job. Had to order another one just to have a spare available all the time.

  2. Simon Walker

    Got one along with the PT10-10, great pair.

  3. Ivanov Dimitrov

    Have used quite a few and none of them let me down.

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