Kewtech vs Megger Multifunction Testers (2026): Which MFT to Buy?
Kewtech and Megger are two of the multifunction tester brands UK electricians weigh up most when buying an MFT. Both make testers for BS 7671 work, so Kewtech vs Megger comes down to which features you need and which model fits the work you do. Here is how the main models compare.
Some links on this page are affiliate links, we may earn a commission if you sign up, at no extra cost to you.
If you want a simple, proven tester for domestic and light commercial work, the Megger MFT1711 is a common choice, though on Amazon UK it is currently only offered through other sellers. Kewtech has the wider spread of models: the KT64DL for straightforward installs, the KT65 if you work on 110V site supplies, and the KT66DL if you need EV charger testing.
Kewtech vs Megger at a Glance
| Tester | Functions (from the listing) | Stand-out detail |
|---|---|---|
| Megger MFT1711 | Full single-phase installation testing | Simple interface, fully automatic RCD test, CAT IV 300V |
| Kewtech KT64DL | 6-in-1 | Anti-trip loop testing on all RCD types, 250/500/1000V insulation |
| Kewtech KT65 | 8-in-1 | Phase-to-phase loops, 55V loops for 110V centre-tapped transformers |
| Kewtech KT66DL | 12-in-1 | EV testing, large colour screen showing all auto-tests |
The Key Differences Between Kewtech and Megger
Range of models
Megger’s MFT1711 is the entry point to its MFT1700 range. Megger describes it as the replacement for the MFT1710, built to meet BS 7671 test requirements, suitable for single-phase domestic and commercial installations, and certified to CAT IV 300V. Kewtech spreads its range wider on Amazon UK, from the 6-in-1 KT64DL up to the 12-in-1 KT66DL, so it is easier to match a Kewtech to exactly the jobs you do.
Loop testing without tripping RCDs
Both brands offer no-trip loop testing, which matters on modern boards full of RCDs and RCBOs. Kewtech lists anti-trip technology for full no-trip loop testing on all RCD types on the KT64DL, and high and low current ATT loop testing on the KT65, which it says overcomes electrical noise and does not suffer from RCD uplift. Megger lists a fully automatic RCD test on the MFT1711.
Site supplies and EV chargers
If you work on construction sites, the KT65 is the stand-out: Kewtech lists phase-to-phase loop testing and 55V loop measurement, so 110V centre-tapped site transformers are covered. If you install EV chargers, the KT66DL is the Kewtech built for it, with EV testing capability and a colour screen that shows all auto-test results at once.
Buying in the UK
At the time of writing, the Megger MFT1711 on Amazon UK is only available through other sellers rather than Amazon itself, and several Kewtech models show low stock. Many electricians buy test equipment from specialist wholesalers instead, so check who the seller is, whether a calibration certificate is included and how the warranty works before you order.
The Kewtech and Megger Testers to Look At
1. Megger MFT1711
Best simple all-rounderMegger describes the MFT1711 as having a simple user interface with easy access to all the tests you need, a fully automatic RCD test and suitability for domestic, commercial and light industrial low voltage installations. It is certified to CAT IV 300V. Currently sold on Amazon UK through other sellers, so check the seller and calibration certificate.
2. Kewtech KT64DL
Best straightforward KewtechA 6-in-1 tester with anti-trip technology for no-trip loop testing on all RCD types, PFC and PSC measurement without changing probes, 250, 500 and 1000V insulation tests with auto discharge, and a backlit display.
3. Kewtech KT65
Best for site workAn 8-in-1 tester with high and low current ATT loop testing, phase-to-phase loops and 55V loop measurement for 110V centre-tapped transformers, plus 250, 500 and 1000V insulation tests and a large backlit display.
4. Kewtech KT66DL
Best for EV charger installersKewtech’s 12-in-1 tester adds enhanced loop testing for three and two-wire low current tests, a large colour screen that shows all auto-test results together and EV testing capability.
Which Should You Buy?
- Domestic rewires, consumer unit changes and EICRs: Megger MFT1711 or Kewtech KT64DL.
- Construction sites with 110V supplies: Kewtech KT65.
- EV charger installs: Kewtech KT66DL.
- Comparing more brands: see our full best multifunction testers guide, which also covers Fluke, Metrel and Martindale.
Frequently Asked Questions
Is Kewtech or Megger better?
Neither is better for everyone. Megger’s MFT1711 is a simple, proven entry model, while Kewtech offers a wider spread of testers on Amazon UK, including the KT65 for 110V site supplies and the KT66DL for EV charger testing.
Is the Megger MFT1711 good for domestic electricians?
Megger describes the MFT1711 as suitable for testing single-phase domestic and commercial installations, built to meet BS 7671 test requirements, with a fully automatic RCD test.
Which Kewtech tester tests 110V site transformers?
The Kewtech KT65. Kewtech lists phase-to-phase loop testing and 55V loop measurement, which covers 110V centre-tapped site transformers.
Do I need to calibrate a new multifunction tester?
Most electricians have their tester calibrated regularly, typically once a year, and competent person schemes expect calibrated equipment. Check that a new tester comes with a calibration certificate.
Related Guides
- Black Friday 2026 Tool Deals for UK Tradespeople
- Best Multifunction Testers UK
- Best Voltage Testers for Electricians UK
- Wera vs Wiha Screwdrivers for UK Electricians
- Knipex vs Klein Pliers for UK Electricians
- Apprentice Electrician Tool List UK
As an Amazon Associate, TradeStack HQ earns from qualifying purchases. Some links on this page are affiliate links, we may earn a commission if you buy, at no extra cost to you. Product details are taken from manufacturer and Amazon UK listings as of October 2026.