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Insulation Testers

Showing 1–12 of 36 resultsSorted by popularity

  • Socket & See IRC PRO Insulation and Continuity Tester
    In Stock - Express Delivery Available

    Socket & See IRC PRO Insulation and Continuity Tester

    From £277.90 (ex VAT)
    £333.48 (inc VAT)
    • Cutting-edge digital tester for continuity and insulation resistance, capable of 1,000V testing.
    • Conducts over 500 tests with a single set of 4 AA batteries, increased tests at reduced voltages.
    • Includes an extensive backlit display, rubber overlay for durability, and protection against accidental mains connection.
    • Meets BS EN 61010, BS EN 61557, and EMC BS EN 61326 standards.
    This product has multiple variants. The options may be chosen on the product page
  • Kewtech KT300DL Insulation, Continuity & SPD Tester
    In Stock - Express Delivery Available

    Kewtech KT300DL Insulation, Continuity & SPD Tester

    From £299.00 (ex VAT)
    £358.80 (inc VAT)
    • Single-function insulation, continuity, and SPD tester
    • Insulation testing across multiple voltages for flexibility
    • Compact, lightweight design with hands-free operation
    • Non-degrading SPD test for reliable safety checks
    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

    From £469.00 (ex VAT)
    £562.80 (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
  • Fluke 1503 Insulation Resistance Tester
    In Stock - Express Delivery Available

    Fluke 1503 Insulation Resistance Tester

    From £385.00 (ex VAT)
    £462.00 (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
  • Megger DLRO10HD LowRes Ohmmeter
    In Stock - Express Delivery Available

    Megger DLRO10HD LowRes Ohmmeter

    From £2,750.00 (ex VAT)
    £3,300.00 (inc VAT)
    • Robust and versatile low resistance ohmmeter
    • User-friendly design with multiple test modes
    • High or low power selection for varied applications
    • Reliable performance in challenging environments
    This product has multiple variants. The options may be chosen on the product page
  • Fluke 1587 FC TRMS Insulation Multimeter
    In Stock - Express Delivery Available

    Fluke 1587 FC TRMS Insulation Multimeter

    From £652.00 (ex VAT)
    £782.40 (inc VAT)
    • PI/DAR timed ratio tests
    • AC/DC voltage, DC millivolts, AC/DC milliamps, Resistance (Ω), Continuity
    • VFD low-pass filter for accurate motor drive measurements
    • Auto-discharge of capacitive voltage for added user protection
    This product has multiple variants. The options may be chosen on the product page
  • Megger MIT220 Insulation and Continuity Tester
    In Stock - Express Delivery Available

    Megger MIT220 Insulation and Continuity Tester

    £293.00 (ex VAT)
    £351.60 (inc VAT)
    • 250 V and 500 V insulation test options set
    • Insulation resistance up to 1000 MΩ range
    • 200 mA continuity down to 0.01 Ω resolution
    • Live volt display 25–600 V with test inhibit
  • Megger MIT230 Insulation Tester
    In Stock - Express Delivery Available

    Megger MIT230 Insulation Tester

    From £364.00 (ex VAT)
    £436.80 (inc VAT)
    • Insulation tests to 1000 MΩ
    • Continuity down to 0.01 Ω
    • Auto discharge and test inhibit
    • Operates from -10°C to +55°C
    This product has multiple variants. The options may be chosen on the product page
  • Megger IMT100 Industrial Multi-Tester
    In Stock - Express Delivery Available

    Megger IMT100 Industrial Multi-Tester

    £1,795.00 (ex VAT)
    £2,154.00 (inc VAT)
    • Insulation resistance testing up to 200GΩ
    • Data storage for up to 256 results
    • Meets IEC62446 and UN ECE R100 standards
    • IP54-rated for tough environments
  • Chauvin Arnoux CA6240 10A Microhmmeter
    In Stock - Express Delivery Available

    Chauvin Arnoux CA6240 10A Microhmmeter

    £2,495.00 (ex VAT)
    £2,994.00 (inc VAT)
    • 10 A test current for low resistance checks
    • 400 µΩ to 400 Ω measurement capability
    • 4 wire Kelvin method for accurate results
    • 1 µΩ resolution with automatic recording
  • Di-Log DL9050N Insulation/Continuity Tester
     Usually ships In 3 to 5 working days

    Di-Log DL9050N Insulation/Continuity Tester

    £280.00 (ex VAT)
    £336.00 (inc VAT)
    • 125V to 1000V insulation resistance tests
    • 200mA continuity testing to BS EN 61557
    • Large LCD with dual digital display screen
    • CAT III 1000V safety rated construction
  • Kewtech KEW3125B High Voltage 5kV Insulation Tester
    In Stock - Express Delivery Available

    Kewtech KEW3125B High Voltage 5kV Insulation Tester

    £764.00 (ex VAT)
    £916.80 (inc VAT)
    • 5kV insulation tester with 1TΩ range
    • 250V to 5000V selectable test output
    • PI and DAR timed diagnostic testing
    • Noise filter for stable HV readings

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.