testo 750-3 - Voltage tester

Order-Nr.  0590 7503

  • Clear, patented all-round LED display 

  • In accordance with DIN EN 61243-3:2011 and CAT III

  • LC display showing the reading

  • RC trigger function and vibrating load buttons

The testo 750-3 voltage tester is the most high-performance model in Testo's convenient and reliable voltage tester family. In addition to the unique fibre-optic technology, the single pole voltage testing, the torch for measuring point illumination and the all-round LED display, it also has an LC display where the value currently being measured is shown.

Delivery time: 3 – 5 working days

Shipping costs

£ 69.00
incl. VAT  £ 82.80

Product Description


The three models in the testo 750 voltage tester family are the first instruments with an all-round LED display. The display can be seen from any position and guarantees an ideal voltage indication thanks to its unique fibre optics. All three models meet the latest voltage tester standard EN 61243-3:2010 and meet CAT III 1000 V CAT IV 600 V safety standards. They have the most important functions for voltage testing, continuity testing and rotating magnetic field measurement.

The testo 750-2 is also suitable for single pole voltage testing and has a torch along with an RC trigger function. By applying a 35 mA load to the circuit, vibrating load buttons ensure that the trigger test cannot be carried out accidentally.

In addition, the testo 750-3 is fitted with an LC display to show the current reading.


Delivery Scope

testo 750-3 Voltage Tester, batteries, measuring tip protector and measuring tip caps. Additional features: suitable for single pole voltage testing, torch light, RC trigger function, LC display to show current reading. See product specs below for details.

DC voltage

Measuring range

12 to 690 V


max. 0.1 V


± (3 % of mv + 5 Digit)

AC voltage

Measuring range

12 to 690 V


max. 0.1 V


± (3 % of mv + 5 Digit)

General technical data

Operating humidity

0 to 95 %RH


295 g


270 x 70 x 35 mm

Operating temperature

-10.0 to 50.0 °C

Product colour


Protection class



EN 61243-3; EN 61326-1; EN 61010-1

Battery type

2 AAA micro batteries

Display type

LCD (Liquid Crystal Display)

Display size


Storage temperature

-15 to +60 °C

Overvoltage Category

CAT IV 600V; CAT III 1000V



Instrument Measurement Functions

Continuity testing


Display ligthing




RDC/RC trigger function


Rotating magnetic field testing


Single pole phase testing


Measuring point illumination


Transport and Protection

£ 24.00
incl. VAT  £ 28.80

Ideal for voltage testing

  • Clear, all-round LED display, LCD, large fibre optic, torch for measuring point illumination, anti-slip ring and ergonomic handle, RCD trigger function, vibrating load buttons

Overview of applications

  • Test electrical circuits or systems for voltage or de-energization (according to DIN EN 61243-3:2010)
  • Single pole voltage testing to determine whether conductors are live
  • Checking the rotating magnetic field
  • Checking RCD circuit breakers
  • Testing voltage supply in live wires