Fluke 1503 Insulation Resistance Tester



  • Insulation Test range 0.1 M Ω to 2G Ω
  • AC/DC Voltage 0.1V to 600V
  • Insulation Test voltages 500V, 1000V
  • CAT IV 600V Overvoltage rating
  • 200 mA Continuity
More Information
Warranty1 year
Price MatchYes

Fluke 1503 Insulation Resistance Tester

The Fluke 1503 covers every aspect an engineer needs from an insulation Tester, its ergonomic design makes it simple to operate, the straight forward function dial lets the engineer navigate what test they want to carry out, the accuracy means they can rely on the measurements they are reading and the rugged design means it can last the wear and tear of day to day work.

The insulation test range on the 1503 is 0.1 M Ω to 2G Ω, the voltages that the insulation is tested at is 500V and 1000V (if more test voltages are required please see the Fluke 1507). AC/DC voltage measurements from 0.1 to 600V. This insulation tester can detect live circuits, this will prevent an insulation test if the voltage is greater than 30V. Another safety feature on the product is the auto discharge of capacitive voltage. The 1503 also has the function to perform a resistance measurement of between 0.01 Ω to 20.00 kΩ.

The backlit display gives the user full visibility at all times. The unit is CATIV 600V rated and comes with four AA alkaline batteries. There is also a 1 year warranty on the 1503 to give the user assurances.

Key features:

  • Insulation test range: 0.1 MΩ to 2000 MΩ
  • Insulation test voltages: 500 V, 1000 V
  • Repetitive or hard-to-reach testing is easy with the remote test probe
  • Live circuit detection prevents insulation test if voltage > 30 V is detected for added user protection
  • Auto-discharge of capacitive voltage for added user protection
  • AC/DC voltage: 0.1 V to 600 V
  • 200 mA Continuity
  • Resistance: 0.01 Ω to 20.00 kΩ
  • Save battery power with auto power off
  • Read measurements easily with large, backlit display
  • CAT IV 600 V overvoltage category rating for added user protection
  • Remote probe, test leads, probes and alligator clips included with each tester
  • Accepts optional Fluke TPAK magnetic hanging system to free your hands for other work

Fluke insulation testers: 1503 vs 1507

Fluke 1503Fluke 1507
Insulation test features
Test voltages500 V, 1000 V50 V, 100 V, 250 V, 500 V, 1000 V
Insulation resistance range0.01 MΩ to 2000 GΩ0.01 MΩ to 10 GΩ
Pass/fail comparison
Auto discharge
Est. # of IRT tests20002000
Voltage > 30 V warning
Remote test probe
Lo ohms/earth-bond continuity200 mA source
(10 mΩ resolution)
200 mA source
(10 mΩ resolution)
DisplayDigital LCDDigital LCD
Other features
Warranty1 year1 year
Battery4 x AA4 x AA

What's included

  • Fluke 1503
  • Remote probe
  • Test leads
  • Test probes
  • Alligator clips
  • User documentation
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