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Insulation Testers

Showing 1–12 of 27 results

  • Sale! Chauvin Arnoux CA6240 10A Microhmmeter
    Usually Ships In 6 to 13 Business Days

    Chauvin Arnoux CA6240 10A Microhmmeter

    Original price was: £2,209.27.Current price is: £1,776.50. (ex VAT)
    £2,131.80 (inc VAT)
    • Precision low-resistance measurement from 400 µΩ to 400 Ω
    • Ergonomic design with easy-to-read LCD screen
    • IP53 rated for durability in challenging environments
    • Stores 100 measurements with USB data export

  • Usually Ships In Two Weeks +

    Chauvin Arnoux CA6255 10A Microhmmeter

    £3,780.96 (ex VAT)
    £4,537.15 (inc VAT)
    • 4-wire measurement method
    • 3 measurement modes: inductive, non-inductive and non-inductive with automatic trigger
    • Temperature compensation function
    • 1,500-measurement storage capacity
    • Large backlit LCD display offering a wide range of indicators

  • Sale! Chauvin Arnoux CA6505 5KV Digital Megohmmeter
    Usually Ships In 3 to 5 Business Days

    Chauvin Arnoux CA6505 5KV Digital Megohmmeter

    Original price was: £1,715.00.Current price is: £1,629.25. (ex VAT)
    £1,955.10 (inc VAT)
    • Measurement range: 10 kΩ to 10 TΩ Programmable test duration
    • Calculation of DAR & PI quality ratios
    • Measurement of voltage, capacitance and leakage current LCD screen with bargraph
    • Power supply by NiMh rechargeable battery

  • Sale!
    Usually Ships In 6 to 13 Business Days

    Chauvin Arnoux CA6545 Digital Megohmmeter

    Original price was: £1,795.00.Current price is: £1,635.95. (ex VAT)
    £1,963.14 (inc VAT)
    • Measurement range: 10 kΩ to 10 TΩ
    • 4 fixed test voltages: 500 / 1,000 / 2,500 and 5,000 V
    • Adjustable test voltage position: 40 to 5,100 V in 10 V or 100 V increments
    • Large backlit LCD screen with digital display and bargraph
    This product has multiple variants. The options may be chosen on the product page

  • Sale! Chauvin Arnoux CA6547 5kV Insulation Tester
    Usually Ships In 6 to 13 Business Days

    Chauvin Arnoux CA6547 5kV Insulation Tester

    Original price was: £2,265.00.Current price is: £2,151.75. (ex VAT)
    £2,582.10 (inc VAT)
    • Measures insulation from 10 kΩ to 10 TΩ
    • Adjustable voltage from 40V to 5,100V, plus four fixed options
    • Stores data with RS232 for easy transfer
    • Durable, portable, and long-lasting battery

  • Sale!
    Usually Ships In 3 to 5 Business Days

    Chauvin Arnoux CA6549 5kV Insulation Tester

    Original price was: £2,779.00.Current price is: £2,640.05. (ex VAT)
    £3,168.06 (inc VAT)
    • 5kV insulation tester with 10kΩ to 10TΩ range
    • Automatic DAR, PI, and DD ratio calculations
    • Large display with real-time graph projection
    • RS-232 connectivity for easy data transfer

  • Sale!
    Usually Ships In 6 to 13 Business Days

    Chauvin Arnoux CA6550 10kV Insulation Tester

    Original price was: £3,895.00.Current price is: £3,700.25. (ex VAT)
    £4,440.30 (inc VAT)
    • 10 kΩ to 25 TΩ resistance with 40V to 10kV test voltages.
    • PI, DAR, and advanced test modes.
    • Large LCD, 80,000 readings storage.
    • Lightweight, rugged and IEC compliant.

  • Usually Ships In 6 to 13 Business Days

    Chauvin Arnoux CA6555 15kv Insulation Tester

    £4,526.63 (ex VAT)
    £5,431.96 (inc VAT)
    • Wide measurement range from 10 kΩ to 25 TΩ
    • Fixed or programmable test voltage from 40V to 15 kV
    • 5mA max. charging current
    • Automatic ratio calculation: DAR / PI / DD / DR (ppm/V)
    • 3 filters to optimize measurement stability

  • In Stock - Express Delivery Available

    Fluke 1503 Insulation Resistance Tester

    £299.50 (ex VAT)
    £359.40 (inc VAT)
    • All-in-one tool for accurate testing
    • Ergonomic design, easy operation with straightforward function dial
    • Wide insulation test range (0.1 MΩ to 2GΩ) at 500V and 1000V
    • AC/DC voltage & resistance measurements
    This product has multiple variants. The options may be chosen on the product page

  • Fluke 1507 Insulation Resistance
    In Stock - Express Delivery Available

    Fluke 1507 Insulation Resistance Tester

    £407.05 (ex VAT)
    £488.46 (inc VAT)
    • Automatic calculation of PI and Dielectric Absorption Ratio
    • Make repetitive tests easy with compare (Pass/Fail) function
    • Repetitive or hard-to-reach testing is easy with the remote test probe
    • Live circuit detection stops insulation test if voltage >30 V is detected
    This product has multiple variants. The options may be chosen on the product page

  • Usually Ships In 6 to 13 Business Days

    Fluke 1550C 5kV Insulation Resistance Tester w/Fluke Connect

    £3,414.82 (ex VAT)
    £4,097.78 (inc VAT)
    • Test voltages up-to 5 kV and save time by trending on the spot only with Fluke ConnectT
    • CAT III 1000 V, CAT IV 600 V safety rating
    • Warning function alerts if live voltage is present
    • Selectable test voltages in 50 V steps from
    This product has multiple variants. The options may be chosen on the product page

  • Usually Ships In 6 to 13 Business Days

    Fluke 1555 10kV Insulation Resistance Tester w/Fluke Connect

    £3,496.11 (ex VAT)
    £4,195.33 (inc VAT)
    • Test voltages up-to 10 kV and save time by trending on the spot only
    • CAT III 1000 V, CAT IV 600 V safety rating
    • Warning function alerts the user that line voltage is present
    • Selectable test voltages in 50 V steps from 250 V to 1000 V
    This product has multiple variants. The options may be chosen on the product page

Insulation Testers

The purpose of an insulation resistance test is to determine the integrity of the insulating material that surrounds electrical wiring within cables and items of machinery. Copper and aluminium are two of the most widely used materials in wiring electrical devices. To keep the electricity flowing in the right direction and properly insulated, the conductive core is enclosed in an insulating material.

Our Insulation Testers test the integrity of this material, as Insulation can degrade over time due to a myriad of factors, including extreme environmental and temperature conditions (UV, heat and cold), incorrect cable usage (under-voltage or -over-voltage) and chemical or blunt trauma damage (motor oil, plant grime and machine movements), which is why regular insulation testing is essential in maintaining insulation soundness. Test4Less stocks a huge selection of both digital and analogue insulation testers, ideal for domestic, industrial, and commercial usage.