MajorTech 1000V Digital Insulation Tester

MajorTech Digital Insulation Tester, easy-to-use has three test voltage ranges 250V, 500V and 1000V together with two continuity ranges.

In stock
Category: Insulation Testers
SKU: MT550

MajorTech 1000V Digital Insulation Tester

The MajorTech Digital Insulation Tester is an easy-to-use handheld meter and has three test voltage ranges 250V, 500V and 1000V together with two continuity ranges.

Whilst doing the insulation test, the large LCD will indicate the insulation resistance together with the actual output voltage. Once the test is complete the circuit under test will be automatically discharged. The MT550 features an AC and DC voltage ranges, battery voltage indication, resistance and a continuity buzzer. If AC voltage is detected, the LCD will display the actual voltage to the user except in the off position.


  • CAT IV 600V and CAT III 1000V
  • 3 test ranges 250V-500V-1000V
  • 750V AC voltage and 1000V DC voltage ranges
  • Live Circuit warning and buzzer
  • Data Hold function
  • 1mA output current on insulation test
  • 200mA short circuit on continuity range
  • Continuity Buzzer
  • Automatic discharge after test
  • Lock down Test Button for continuous use
  • Hands free strap and magnet supplied as standard accessories
  • Rubber overmould housing
  • Illuminated display


Function Range Resolution Accuracy
DC voltage 0 – 1000V 1V ±(0.8% +3)
AC voltage 0 – 750V 1V ±(1.2% +10)
Resistance 200Ω – 200KΩ 0.1Ω ±( 1.0%+2)
Insulation resistance 250V 250V 0 – 200MΩ ±(3.0% +5)
Insulation resistance 500V 500V 0 – 200MΩ ±(3.0% +5)
Insulation resistance 1000V 1000V 0 – 2000MΩ ±(5.0% +5)
Short circuit current 1.0mA
Overrange indication Yes
AC Bandwidth 40Hz – 400Hz
Digital Display Dual LCD Display
Continuity Yes
Auto discharge Yes
Input impedance >10MΩ VDC & >10MΩ VAC
Data Hold Yes
Back Light Yes
Enclosure Double moulded
Low battery indication Yes
Batteries 6 x AA
Weight 700g
Dimensions 200 x 92 x 50mm
Safety Specs IEC61010-1 CAT IV 600V


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