Electrical Testing – Insulation & Continuity

Explore our range of insulation and continuity testing equipment designed for accurate, reliable and compliant electrical testing. These instruments are essential for measuring insulation resistance, verifying circuit integrity and identifying faults during installation, inspection and maintenance.

Our selection includes insulation testers, continuity testers, megohmmeters and micro-ohmmeters, covering both high-resistance insulation measurement and low-resistance continuity testing. The range also features advanced models and complete testing kits, with options for high-voltage testing, data logging and precision measurement in demanding environments.

Built for performance and ease of use, these tools deliver consistent, dependable results across a wide range of electrical testing applications.

- Insulation Testers
- Brymen BM878 Insulation Tester / DMM Multimeter
- £250.00 / £300.00 incl VAT
- ⚡ Data Hold and Min/Max Recording: Freeze values on screen and record system performance ⚡ X-Speed Capacitance Measurement: Up to 30mF in a few seconds with 1kV protection ⚡ Beep-Jack™: Alerts improper terminal plug-in, reducing damage risk ⚡ Safety Ratings: CAT IV 600V, CAT III 1000V ⚡ 3-Year Warranty
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- Continuity Testers
- Chauvin Arnoux CA6011 Continuity rod (P01102084A)
- £83.00 / £99.60 incl VAT
- ⚡ The Chauvin Arnoux CA6011 continuity rod is a specialized electrical testing accessory designed for professionals. ⚡ It features a high-quality resistance measurement system that provides accurate and consistent readings. ⚡ The rod is lightweight and ergonomically designed for comfortable use, even in challenging environments. ⚡ Equipped with a high-visibility LED indicator, this continuity rod is easy to use and helps professionals quickly identify…
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- Continuity Testers
- Chauvin Arnoux CA6011 Continuity Tester Kit c/w all acessories below (except for continuity rod) (P01299926)
- £335.00 / £402.00 incl VAT
- ⚡ Measure Earth Resistance ⚡ Versatile test modes ⚡ Backlit Display ⚡ One Button Operation ⚡ Test Leads Included ⚡ Continuity Measurement Range 0.00 Ω to 2.00 Ω - 2.00 Ω to 20.00 Ω
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- Micro-Ohmmeters
- Chauvin Arnoux CA6240 Microhmmeter with 4-Wire Measurement and Kelvin Clamps
- £2,846.00 / £3,415.20 incl VAT
- ⚡ Resistance Measurement: Capable of measuring from 5mΩ to 400Ω with a remarkable resolution of 1µΩ. ⚡ Seven Ranges: Offers multiple current settings (10A, 1A, 100mA, 10mA) to suit diverse testing needs. ⚡ Automatic Testing: Initiates tests as soon as continuity is achieved, enhancing efficiency and ease of use. ⚡ Advanced Data Handling: Automatic recording of measurements to internal memory…
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- Micro-Ohmmeters
- Chauvin Arnoux CA6255 Precision Microhmmeter with 4-Wire Measurement and Kelvin Clamps
- £4,870.00 / £5,844.00 incl VAT
- ⚡ Wide Measurement Range: Measure resistance from 0 to 2500Ω with a maximum resolution of 0.1µΩ for detailed and accurate readings. ⚡ Adjustable Test Currents: Choose from multiple ranges with adjustable test currents from 10A to 1mA to suit various testing needs. ⚡ Extensive Data Storage: Save up to 1500 readings in the internal memory, conveniently sorted under object and…
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- Micro-Ohmmeters
- Chauvin Arnoux CA6292 200A Digital Micro Ohmmeter
- £9,339.00 / £11,206.80 incl VAT
- ⚡ Resistance measurement up to 1Ω and a micro-resolution of 0.1µΩ ⚡ Fully adjustable test current range from 20A to 200A ⚡ Waterproof outer casing and internal cooling system for safe operation
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- Megohmmeters
- Chauvin Arnoux CA6503 Megohmmeter Magneto 250 – 1000V DC
- Original price was: £689.00.Current price is: £617.00. / £740.40 incl VAT
- ⚡ Accurate voltage testing up to 600V with 3% accuracy. ⚡ Insulation measurements up to 500V with a range of up to 200mOhm. ⚡ Dual resistance ranges (0-45kOhm and 45-500kOhm) with 2.5% accuracy. ⚡ Versatile application in various sectors including maintenance, testing, and compliance with safety standards.
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- Megohmmeters
- Chauvin Arnoux CA6505 Digital Megohmmeter – 5kV Insulation Resistance Tester
- £2,410.00 / £2,892.00 incl VAT
- ⚡ Wide range of insulation resistance measurement from 10kΩ to 10TΩ. ⚡ Versatile voltage measurements up to 5100V for comprehensive testing. ⚡ Capable of measuring capacitance up to 49.99F and leakage current up to 3000A. ⚡ Convenient programmable test duration and locking of test voltage. ⚡ Robust carrying case for protection and portability, with a 30-day battery life for uninterrupted testing.
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- Insulation Testers
- Chauvin Arnoux CA6526 Insulation Tester
- £662.00 / £794.40 incl VAT
- ⚡ Vast measurement range of 0 to 200GΩ and test voltages of 50V, 100V, 250V, 500V and 1000V ⚡ The CA6526 gives the user flexibility when testing, with a high degree of accuracy ensuring precision results ⚡ The internal memory can store up to 1,300 recordings which can be transferred to a computer via Bluetooth
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- Insulation Testers
- Chauvin Arnoux CA6536 Insulation Tester, digital, 10-100V DC, in 1V Steps Cat.IV 600V, c/w carrying case & leads.
- £739.00 / £886.80 incl VAT
- ⚡ The test voltage is completely adjustable between 10V and 100V for use in specialist sectors ⚡ The CA6536 has a measurement range of 2kΩ up to 20GΩ, and is rated CAT IV 600V ⚡ Also supplied with a torch, a carry case, and a magnetic mount which makes the tester usable hands-free
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- Megohmmeters
- Chauvin Arnoux CA6545 Digital Megohmmeter – 5kV Insulation Resistance Tester with Timed IR, PI, DAR & Step Voltage
- £2,740.00 / £3,288.00 incl VAT
- ⚡ Wide insulation testing range from 30kΩ to 10TΩ for high voltage systems. ⚡ Four fixed test voltages (500V, 1000V, 2500V, 5000V) with programmable options. ⚡ Automatic calculation of important ratios like DAR, PI, and DD, along with R(t) curve tracing. ⚡ Convenient features such as programmed test duration, voltage lock-down, and programmable alarms. ⚡ Equipped with a large LCD…
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- Megohmmeters
- Chauvin Arnoux CA6547 Digital Megohmmeter – 50V to 5000V Insulation Resistance Tester with Timed IR, PI, DAR, Step Voltage & RS232 Connectivity
- £3,398.00 / £4,077.60 incl VAT
- ⚡ Insulation resistance measured between 10kΩ and 10TΩ ⚡ Polarisation index, dielectric absorption ratio and R(t) graph plotting ⚡ Dielectric discharge measurement for assessing composite insulation
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- Megohmmeters
- Chauvin Arnoux CA6549 Digital Megohmmeter – Graphical, 40V to 5000V DC with RS232 & Analysis Software
- £3,845.00 / £4,614.00 incl VAT
- ⚡ Capable of PI, DAR ratio, and dielectric discharge index calculation ⚡ Real-time projection of R(t) graph on large, graphical display ⚡ Measures resistance (10TΩ), leakage current, capacitance and voltage
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- Megohmmeters
- Chauvin Arnoux CA6550 10kV Megohmmeter
- £4,706.00 / £5,647.20 incl VAT
- ⚡ Test voltages up to 10kV for measuring insulation resistance up to 25TΩ ⚡ PI, DAR ratio, DD index calculation, and relative mode analysis ⚡ Multiple graphs shown on screen including R(t)+u(t), i(t) and i(u)
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- Megohmmeters
- Chauvin Arnoux CA6555 Digital 15kV Megohmmeter – High-Voltage Insulation Tester with Carry Case, Leads & Software
- £5,830.00 / £6,996.00 incl VAT
- ⚡ Maximum test voltage of 15kV for resistance measurement up to 30TΩ ⚡ Non-destructive test modes for fault-finding plus burning mode for samples ⚡ Internal memory for 80,000 readings plus USB data transfer
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- Insulation Testers
- Fluke 1503 Insulation Resistance Tester
- £434.00 / £520.80 incl VAT
- ⚡ Insulation resistance range: 0.1MΩ to 2000MΩ ⚡ Test voltages of 500V and 1000V ⚡ Earth bond resistance testing ⚡ Continuity testing and AC/DC voltage measurement up to 600V ⚡ Remote probe, test probes, test leads and crocodile clips supplied as standard
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- Insulation Testers
- Fluke 1507 Insulation Tester 1000v, AC/DC Voltage up to 600v
- Original price was: £544.00.Current price is: £444.00. / £532.80 incl VAT
- ⚡ Auto-discharge of capacitive voltage for added user protection. ⚡ AC/DC voltage: 0.1 V to 600 V. ⚡ 200 mA Continuity. ⚡ Insulation test range: 0.01 MΩ to 10 GΩ ⚡ Insulation test voltages: 50 V, 100 V, 250 V, 500 V, 1000 V
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- Insulation Testers
- Fluke 1535 2.5kV Insulation Resistance Tester
- £1,119.00 / £1,342.80 incl VAT
- ⚡ Simplified troubleshooting for a wide range of environments ⚡ Selectable test voltages from 250V to 2500V ⚡ Resistance measurements up to 500GΩ ⚡ Automatic calculation of Polarization Index (PI) and Dielectric Absorption Ratio (DAR) ⚡ Backlit display for visibility in all lighting conditions
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- Insulation Testers
- Fluke 1550C FC 5kV Digital Insulation Tester with Fluke Connect
- £4,264.00 / £5,116.80 incl VAT
- Discover Our Premium Collection At Testermans, we take pride in introducing our exclusive range of top-end test equipment. These meticulously curated items transcend the ordinary, offering unparalleled quality and performance. Whether it’s cutting-edge technology, precision measurements, or rugged durability, our limited-stock inventory promises excellence. When marked ‘in stock,’ we dispatch same day with reliable couriers. For backordered products, trust our…
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- Insulation Testers
- Fluke 1550C FC KIT 5kV Insulation Resistance Tester Kit with IP67 Hard Case, Fluke Connect IR3000FC/1550 Connector & Accessories
- £4,701.00 / £5,641.20 incl VAT
- ⚡ 3-year Fluke Warranty ⚡ Test voltages up to 5kV and save time by trending on the spot ⚡ CAT III 1000V, CAT IV 600 V safety rating ⚡ Selectable test voltages in 50 V steps (250 V to 1000 V) and 100 V above 1000 V ⚡ Fluke Connect ⚡ Long battery life ⚡ Quality case and accessories included
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- Insulation Testers
- Fluke 1555 FC (Fluke Connect) 10 kV Insulation Tester
- £4,701.00 / £5,641.20 incl VAT
- ⚡ 3-year Fluke Warranty ⚡ Test voltages up to 10kV and save time by trending on the spot ⚡ CAT III 1000V, CAT IV 600 V safety rating ⚡ Selectable test voltages in 50 V steps (250 V to 1000 V) and 100 V above 1000 V ⚡ Fluke Connect ⚡ Long battery life
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- Insulation Testers
- Fluke 1555 FC (Fluke Connect) 10kV KIT Insulation Resistance Tester Kit with IP67 Hard Case
- £5,135.00 / £6,162.00 incl VAT
- ⚡ 3-year Fluke Warranty ⚡ Test voltages up to 10kV and save time by trending on the spot ⚡ CAT III 1000V, CAT IV 600 V safety rating ⚡ Selectable test voltages in 50 V steps (250 V to 1000 V) and 100 V above 1000 V ⚡ Fluke Connect ⚡ Long battery life ⚡ Quality case and accessories included
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- Insulation & Continuity Testers
- Fluke 1577 Insulation & Multimeter with Case & Accessories
- Original price was: £691.00.Current price is: £565.00. / £678.00 incl VAT
- ⚡ Three-year warranty by Fluke ⚡ Digital insulation tester ⚡ True RMS digital multimeter ⚡ Single, compact, handheld unit ⚡ Provides maximum versatility for both troubleshooting and preventative maintenance
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- Insulation & Continuity Testers
- Fluke 1587 FC (Fluke Connect) 2-in-1 Insulation Multimeter 600mV – 1000v AC/DC
- Original price was: £775.00.Current price is: £689.00. / £826.80 incl VAT
- ⚡ Dual capability for measuring insulation resistance, ac/dc voltage, dc millivolts, and resistance for versatile applications. ⚡ Fluke Connect-enabled for remote monitoring, allowing safe review of measurements on your smartphone. ⚡ Automated temperature compensation ensures accurate baselines and relevant historical comparisons. ⚡ Memory storage through Fluke Connect eliminates manual record-keeping, reducing errors and providing historical data tracking. ⚡ Safety features…
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