Fluke 1503 Insulation Resistance Meter

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The Fluke 1503 Insulation Resistance Meter is a dedicated electrical testing device meticulously engineered for gauging insulation resistance across diverse electrical systems and components. Its primary function involves assessing insulation quality within these systems, diligently identifying potential problems or defects that may pose electrical safety risks.

Applications: Electrical Equipment Testing, Cable and Wiring Inspections, Cable and Wiring Inspections, HVAC Systems

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The Fluke 1503 Insulation Resistance Meter excels in fulfilling essential insulation testing requirements. It stands as an excellent option for conducting fundamental electrical insulation tests in both residential and commercial settings. This robust and conveniently compact device easily fits within the grasp of your hand. While maintaining the same form factor as the Fluke 1507, it offers a streamlined feature set. With the Fluke 1503, you can rely on its capability to execute the most prevalent tests, all at a highly competitive price point. Notably, it boasts supplementary functionalities, such as a remote probe, which enhances efficiency by reducing the time required for repetitive testing tasks.

Features of Fluke 1503 Insulation Resistance Meter:

  • Measures AC/DC voltage from 0.1 V to 600 V
  • Includes auto-discharge of capacitive voltage for added user protection
  • Provides lo-ohms earth-bond continuity (200 mA)
  • Saves battery power with auto power off
  • Presents results on a large, backlit display
  • Comes with remote probe, test leads, test probes, alligator clips, and one-year warranty

Additional information



Model No



600.0 V


0.1 V


±(2% + 3)

Operating Temperature

-20°C to 55°C (-4°F to 131°F)

Storage Temperature

-40°C to 60°C (-40°F to 140°F)

Overload Protection

600 V rms or DC


Random, 2 g, 5-500 Hz per MIL-PRF-28800F, Class 2 instrument


Four AA batteries (NEDA 15A or IEC LR6)

Protection class



CSA per standard CSA/CAN C22.2 No. 61010.1-04; TUV per standard IEC/EN 61010-1 2nd Edition


5.0 x 10.0 x 20.3 cm


550 g

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Insulation Resistance Meter

Fluke 1503 Insulation Resistance Meter