Insulation/Continuity Tester



18th Edition Insulation Continuity Testers

DL9050N Insulation/Continuity Tester

Large back lit digital display of test values. The double moulded case makes this instrument suitable for the most rugged applications.


  • Four test voltage ranges 125, 250, 500 & 1000 V
  • Continuity test at 200 mA in compliance with BS EN 61557
  • Test hold and output voltage lock function for easy operation
  • Zero button to null the leads
  • Supplied in moulded plastic carry case
  • Meets EN 61326 and EN 610101-1 CAT 111 1000 V


DisplayLarge LCD with dual display
Insulation resistance0.1 – 2000 MΩ
Over voltage categoryCAT III / 1000 V against ground
Power supply6 x 1.5 V AA batteries (supplied)
Safety standardsEN61010, BS EN 61557 BS 7671
Test current200mA
Test voltage250, 500 , 1000 V DC
Voltage0 – 750 V AC / DC
Voltage DC1000V (1V Resolution)
Dimensions200 x 92 x 50 mm
Weight700 g (including batteries)