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A slender cylindrical high-voltage probe with an alligator clip ground lead and output cable

Electronix Express

Electronix Express High Voltage Probe 40000 V DC 28000 V AC measurement tool

SKU CH-GXPY-5ECDR

High-voltage probe measures up to 40,000 V DC and 28,000 V AC with 1,000 MΩ input impedance and 1 V/1 kV output division for DMMs

  • Product typeVoltage and Continuity Testers
  • Measures up to 40,000 V DC and 28,000 V AC for high-voltage testing
  • 1,000 MΩ input impedance minimises circuit loading during measurement
  • 1 V per 1 kV output division allows direct reading on a standard DMM
  • DC accuracy ±1 % to 20 kV and ±2 % to 40 kV for reliable results
  • 3 ft ground lead and 3.3 ft output cable give flexible bench placement

High-Voltage Probe for DMM Use

This probe extends a standard digital multimeter to measure up to 40000 volts DC or 28000 volts AC at 50/60 Hz. It presents a 1000M input impedance and delivers a 1V per 1KV output division for direct reading on the meter. The unit is intended for technicians who need to verify high-voltage circuits safely.

Suits DC Work to 40 kV; Not for Higher AC Precision

Engineers checking DC supplies to 20 kV gain ±1% accuracy, while readings up to 40 kV stay within ±2%. AC measurements from 1 to 28 kV carry a wider -5% to -10% tolerance, so users who need tighter AC uncertainty should consider other instruments. The probe operates from 0 to 50 °C and stores from -20 to 70 °C.

1000M Input Impedance Matches 10M Meters

The 1000M impedance is specified for use with a 10M input DMM on a fixed range, not autoranging. A 3-foot ground lead and 3.3-foot output cable connect to the meter's volts and common terminals. The probe body measures 13.4 inches long and 0.77 inches in diameter, weighing about 10.5 ounces.

How it compares

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Price $97.99
Pricier than about 63% of the 3,030 comparable items (median $54.99).

Specifications

Product
Product typeVoltage and Continuity Testers

Questions about this item

How much heat does the probe generate during continuous high-voltage measurement?

The probe dissipates a maximum of 1.6 watt, so it remains cool during extended use.

What multimeter input impedance is required for the stated accuracy?

The accuracy figures assume a 10M input impedance DMM connected to the volt and com terminals.

Will the probe work with an older analog multimeter that has a lower input impedance?

Accuracy is specified for a 10M impedance meter; using a lower-impedance analog meter will alter the 1V/1KV division ratio and degrade accuracy.

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