Insulation Testers

Insulation testers are electrical measurement test tools used for preventative or predictive maintenance programs. Also known as megohmmeters they are designed to identify potential equipment failures before they occur. Insulation resistance testers are perfect for testing a wide range of high voltage equipment including switchgear, motors, generators and cables.

RS Components offer a range of high-quality electrical test tools from leading brands including Megger, Fluke, Chauvin Arnoux, Keysight Technologies, Metrohm, FLIR and of course RS PRO.

We also offer an in-house calibration service. See here for more details calibration services

Insulation tester types

Insulation testers are handheld devices but can be portable with a handle or bench mounted. Testers usually have an LCD or digital display, but some have the more traditional analogue needle such as the Megger MIT310A.

How do insulation resistance testers work?

Testing the integrity of insulation requires measuring its resistance to current flow across it. Testers use high voltage low current DC charge to measure the resistance. A high level of resistance means that very little current is escaping through the insulation. Conversely, a low level of resistance indicates a significant amount of current may be leaking through and along the insulation.

What is the purpose of insulation testing?

Ideally, all the electrical current sent along a conductive wire should reach its intended destination. However, you do find that some of it is lost along the way due to various reasons. Wires are insulated with a resistant sheathing to contain the conductivity of the copper or aluminium core, but even with this insulation in place, some of the current still manages to escape. The electricity that leaks out can be detrimental to electrical circuits and machinery.

Testing can help you determine whether the insulation is performing at an effective and safe level. Excessive heat or cold, moisture, vibration, dirt, oil and corrosive vapours can all contribute to deterioration therefore routine testing can identify problems before they result in injury or equipment failure.

Insulation testers provide noise-free, reliable results. They are safe and easy to use and the ideal solution for troubleshooting, commissioning and preventative maintenance applications.


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Omschrijving Prijs Tester Type Minimum Test Voltage Maximum Test Voltage Maximum Insulation Resistance Measurement Display Type Calibrated Test Current Battery Life Minimum Operating Temperature Maximum Operating Temperature Power Source Safety Category Level Safety Category Voltage Safety Category
RS-stocknr. 516-9160
FabrikantnummerMIT310A
FabrikantMegger
585,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V dc 999mΩ Analogue RSCAL 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600V
RS-stocknr. 913-7016
FabrikantnummerP01140836
FabrikantChauvin Arnoux
750,00 €
Each
Aantal stuks
Insulation & Continuity Tester 10V 100V 20GΩ Digital RSCAL 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 921-8764
Fabrikantnummer1006-340
FabrikantMegger
835,00 €
Each
Aantal stuks
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital RSCAL 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 912-0055
Fabrikantnummer93530-D
FabrikantBeha-Amprobe
497,00 €
Each
Aantal stuks
Insulation Tester 100V 1000V 999kΩ LCD RSCAL 1mA - - - Battery CAT III 600V CAT III 600V
RS-stocknr. 914-2888
FabrikantnummerP01140826
FabrikantChauvin Arnoux
608,00 €
Each
Aantal stuks
Insulation & Continuity Tester 50V 1000V 200GΩ Backlit Digital LCD, Backlit LCD - 200mA 1500 Measurements, 3000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 123-1969
FabrikantRS PRO
245,60 €
Each
Aantal stuks
Insulation Tester 125V 1000V 4000MΩ LCD RSCAL 1mA - 0°C +40°C Battery CAT III 1000V CAT III 1000V
RS-stocknr. 913-7019
FabrikantnummerP01140836
FabrikantChauvin Arnoux
763,00 €
Each
Aantal stuks
Insulation & Continuity Tester 10V 100V 20GΩ Digital UKAS 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 123-3220
FabrikantRS PRO
286,84 €
Each
Aantal stuks
Insulation Tester 50V 1000V 20GΩ Auto Backlit Analog Bar Graph Display - - 1100 (times of insulation tests) 0°C +50°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 550-233
FabrikantnummerP01139701C
FabrikantChauvin Arnoux
2.573,00 €
Each
Aantal stuks
Insulation Tester 50V 5100V 10TΩ Backlit LCD - 0.000 nA → 3000 μA 30 days -10°C +55°C Rechargeable NiMH battery CAT III, CAT IV 600 V, 1000V CAT I V 600V, CAT III 1000 V
RS-stocknr. 913-6919
FabrikantnummerP01140824
FabrikantChauvin Arnoux
618,00 €
Each
Aantal stuks
Insulation & Continuity Tester 50V 1000V 200GΩ Digital RSCAL 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 820-2973
FabrikantnummerU1453A
913,00 €
Each
Aantal stuks
Insulation Tester 50V 1000V 260GΩ LCD - 1mA 160 h -40°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600V
RS-stocknr. 914-2894
FabrikantnummerP01140836
FabrikantChauvin Arnoux
680,00 €
Each
Aantal stuks
Insulation & Continuity Tester 10V 100V 20GΩ Digital - 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 123-1931
FabrikantRS PRO
138,00 €
Each
Aantal stuks
Insulation Tester 250V 1000V 2GΩ LCD - ≤200mA - 0°C +40°C Battery CAT III 1000V CAT III 1000V
RS-stocknr. 192-3099
FabrikantnummerP01140301
FabrikantChauvin Arnoux
558,00 €
Each
Aantal stuks
Insulation Tester - - - - - - 1000 Measurements - - Battery - - -
RS-stocknr. 516-7697
FabrikantnummerMIT310-EN
FabrikantMegger
560,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V dc 999MΩ LCD - 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600V
RS-stocknr. 122-6802
Fabrikantnummer1006-341
FabrikantMegger
955,00 €
Each
Aantal stuks
Insulation Tester 50V 500V 200GΩ Digital RSCAL 20 mA @ 10.0 Ω → 99.9 Ω, 205 mA @ 0.01 Ω → 9.99 Ω 2200 5-Second Tests -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 763-9264
Fabrikantnummer1001-946 (UK) 1001-945 (EU)
FabrikantMegger
4.220,00 €
Each
Aantal stuks
Insulation Tester 500V 10000V 20TΩ LCD - 6mA 4.5 h -20°C +50°C Battery, Mains - - CAT IV 600V
RS-stocknr. 123-1955
FabrikantRS PRO
208,00 €
Each
Aantal stuks
Insulation Tester 250V 1000V 2000MΩ LCD RSCAL ≤200mA - 0°C +40°C Battery CAT III 1000V CAT III 1000V
RS-stocknr. 516-9176
FabrikantnummerMIT310A
FabrikantMegger
598,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V dc 999mΩ Analogue UKAS 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600V
RS-stocknr. 305-9819
FabrikantnummerMX0406B
FabrikantMetrix
547,00 €
Each
Aantal stuks
Insulation & Continuity Tester 50V 500V 200MΩ Galvanometer - - 1000 5-Second Tests 0°C +45°C Battery CAT III 300V CAT III 300V