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. 426-398
FabrikantnummerMARIN2101
FabrikantMartindale
329,74 €
Each
Aantal stuks
Insulation & Continuity Tester - 500V 1000MΩ LCD RSCAL 200mA - 0°C +40°C Battery CAT III 600V CAT III 600V
RS-stocknr. 123-2329
FabrikantRS PRO
319,50 €
Each
Aantal stuks
Insulation Tester 250V 1000V 4000MΩ LCD UKAS 1mA - 0°C +40°C Battery - - -
RS-stocknr. 379-476
FabrikantnummerIN2101
FabrikantMartindale
259,74 €
Each
Aantal stuks
Insulation & Continuity Tester - 500V 1GΩ LCD - 200mA - 0°C +40°C Battery CAT III 600V CAT III 600V
RS-stocknr. 426-409
FabrikantnummerMARIN2101
FabrikantMartindale
342,74 €
Each
Aantal stuks
Insulation & Continuity Tester - 500V 1000MΩ LCD UKAS 200mA - 0°C +40°C Battery CAT III 600V CAT III 600V
RS-stocknr. 123-2328
FabrikantRS PRO
306,50 €
Each
Aantal stuks
Insulation Tester 250V 1000V 4000MΩ LCD RSCAL 1mA - 0°C +40°C Battery - - -
RS-stocknr. 302-9587
FabrikantnummerMJ 15
FabrikantMegger
2.075,00 €
Each
Aantal stuks
Insulation Tester 500V 5000V 20GΩ Analogue - 1mA 2000 5-Second Tests -20°C +50°C Battery CAT I, CAT III 300 V, 600 V CAT I 600 V, CAT III 300V
RS-stocknr. 913-6892
FabrikantnummerP01140822
FabrikantChauvin Arnoux
552,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V 40GΩ Digital RSCAL 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 913-6896
FabrikantnummerP01140822
FabrikantChauvin Arnoux
565,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V 40GΩ Digital UKAS 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 914-2875
FabrikantnummerP01140822
FabrikantChauvin Arnoux
482,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V 40GΩ Backlit Digital LCD, Backlit LCD - 200mA 1500 Measurements, 3000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 820-4768
FabrikantnummerU1461A
1.104,00 €
Each
Aantal stuks
Insulation Tester 50V 1000V 260GΩ OLED RSCAL 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. 820-4777
FabrikantnummerU1461A
1.117,00 €
Each
Aantal stuks
Insulation Tester 50V 1000V 260GΩ OLED UKAS 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. 247-8562
FabrikantnummerE3640
FabrikantMetrohm
1.893,00 €
Each
Aantal stuks
Flash Tester 0V 4200V - LCD - 5mA - -15°C +55°C Battery, Mains - - -
RS-stocknr. 763-9260
Fabrikantnummer1001-939
FabrikantMegger
3.245,00 €
Each
Aantal stuks
Insulation Tester 250V 5000V 10TΩ LCD - 6mA 6 h -20°C +50°C Battery, Mains - - CAT IV 600V
RS-stocknr. 820-2976
FabrikantnummerU1461A
1.034,00 €
Each
Aantal stuks
Insulation Tester 50V 1000V 260GΩ OLED - 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. 705-1957
FabrikantnummerFLUKE 1550C
FabrikantFluke
4.369,00 €
Each
Aantal stuks
Insulation Tester 250V 5000V 1TΩ LCD - 1 nA → 2 mA 750 Tests -20°C +50°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600V
RS-stocknr. 914-2879
FabrikantnummerP01140824
FabrikantChauvin Arnoux
548,00 €
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. 123-1956
FabrikantRS PRO
221,00 €
Each
Aantal stuks
Insulation Tester 250V 1000V 2000MΩ LCD UKAS ≤200mA - 0°C +40°C Battery CAT III 1000V CAT III 1000V
RS-stocknr. 123-3387
FabrikantRS PRO
369,84 €
Each
Aantal stuks
Insulation Tester 50V 1000V 20GΩ Auto Backlit Analog Bar Graph Display UKAS - 1100 (times of insulation tests) 0°C +50°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 122-6798
Fabrikantnummer1004-745
FabrikantMegger
880,00 €
Each
Aantal stuks
Insulation Tester 50V 2500V 200GΩ - - - 3000 5-Second Tests - - Battery CAT IV - -
RS-stocknr. 516-9148
FabrikantnummerMIT310
FabrikantMegger
643,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V dc 999mΩ LCD UKAS 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600V