FLUKE 1503 Insulation Resistance Tester

€538.00 Ex. VAT

Code Type No. Quantity Price Ex. VAT
K10001 1503 €538.00
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Returns Policy

Easy Returns via Store, Post or Courier

Caulfield Industrial  are happy to accept items returned to us within 28 days of purchase and in this case we offer you an exchange or a full refund once we receive the items and process them in our warehouse. Any returns which fall outside this 28 day time period may be considered on a case-by-case basis and is at the discretion of Caulfields and may be refunded as a credit against a future purchase. All items must be returned to Caulfields in the same condition in which they were shipped and in a saleable condition. Caulfield Industrial reserves the right to refuse a return if it is determined that the item has been used or worn and then returned for any reason other than being ‘faulty’.

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Fluke 1503 Insulation Resistance Tester


The Fluke 1503 is a great choice for basic residential and commercial electrical insulation testing. This rugged, compact tool fits in the palm of your hand. 1503 is the same form factor as the Fluke 1507 but with a few fewer features. You can count on it to handle the most common tests at a most affordable price. Additional features, like the remote probe, reduce the time needed to perform repetitive testing.

  • A rugged, compact insulation resistance tester for residential and commercial electricians
  • Includes auto-discharge of capacitive voltage for added user protection
  • Provides lo-ohms earth-bond continuity
  • Simplifies repetitive or hard-to-reach testing with the remote test probe
  • Saves battery power with auto power off
  • Presents results on a large, backlit display
  • Features CAT IV 600 V overvoltage category rating
  • Accepts optional Fluke TPAK magnetic hanging system to free your hands for other work
Battery Type AA
Maximum Voltage Applied To Any Terminal: 600 volt AC-RMS or DC
Storage Temperature -40 to 60 degree Celsius
Operating Temperature -20 to 55 degree Celsius
Temperature Co-efficient 0.05 x (Specified Accuracy) per degree Celsius for temperatures < 18 degree Celsius or > 28 degree Celsius
Relative Humidity
0 to 95 percent at 10 to 30 degree Celsius
0 to 75 percent at 30 to 40 degree Celsius
0 to 40 percent at 40 to 55 degree Celsius
Vibration Random, 2 g, 5-500 Hz per MIL-PRF-28800F, Class 2 instrument
Shock 1 meter drop per IEC 61010-1 2nd Edition (1 meter drop test, six sides, oak floor)
Measurement Range 0.01 to 2000 MΩ
Test Voltage 500 volt, 1000 volt
Test Voltage Accuracy + 20 percent,-0 percent
Short Circuit Current 1 mA nominal
Auto Discharge Discharge time < 0.5 second for C = 1 µF or less
Live Circuit Indicator Inhibit test if terminal voltage > 30 volt prior to initialization of test
Maximum Capacitive Load Operable with up to 1 µF load
Measure Accuracy
500 volt ±(1.5 percent + 5)
1000 volt ±(1.5 percent + 5) to 2000 MΩ, ±(10 percent + 3) above 2000 MΩ
AC/DC Voltage Measurement
Accuracy Range 600 volt
Resolution 0.1 volt
50 Hz to 400 Hz ±(percent of Rdg + Digits) ±(2 percent + 3)
Input Impedance 3 MΩ (nominal), < 100 pF
Common Mode Rejection Ratio (1 kΩ unbalanced) > 60 dB at DC, 50 or 60 Hz
Overload Protection 600 volt-RMS or DC
Earth Bond Resistance Measurement
Range/Resolution 20.00 Ω 0.01 Ω
200.0 Ω 0.1 Ω
2000 Ω 1.0 Ω
20.00 kΩ 0.01 kΩ
Accuracy ±(1.5% + 3)
Overload Protection 2 volt RMS or DC
Open Circuit Test Voltage > 4.0 volt, < 8 volt
Short Circuit Current > 200.0 mA
Size 50 x 100 x 203 cm
Weight 0.55 kg
  • Remote Probe
  • Test Leads
  • Test Probes
  • Alligator Clips
  • User Documentation

Technical File:


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