Martindale ET4000 Rechargeable Multifunction Tester

  • 18th Edition Ready
  • CAT IV Rated for additional protection
  • Red and green LED indicators for instant pass / fail results
  • Automatic polarity and wiring check on connection
  • Protected against accidental live circuit connection
  • RCD auto test and ramp test with all results on one screen
£1,404.00 £1,170.00

Availability: Not Available

Product Code
MARET4000

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Technical Support

July 2023 - The Martindale ET4000 has now been discontinued by the manufacturer.


This is the latest multifunction tester available from Martindale Electric. Designed to make your job easier and testing faster, this multifunction is equipped with a host of features. As an entry level tester, you'll find you get much more for your money when compared to the functionality of that from leading manufacturers such as Fluke or Megger.

Ready for the 18th Edition

The ET4000 has built-in loop pass values which are set to the values required in the latest BS7671 18th Edition Wiring Regulations.

Martindale ET4000 comes with built-in pass and fail values

Simple pass / fail indication

A red & green LED indicator gives an instant notification of a pass or fail, based on the selected pass limit.

Auto RCD test results displayed simultaneously

Most other MFTs require you to scroll through the 5 test results of an auto sequence. The ET4000 displays all the results on screen simultaneously, saving time when recording the information.

Automatic wiring check

When connected, a wiring and polarity check is automatically carried out. This helps identify potentially dangerous wiring faults in advance.

True RMS voltage measurement
Did you know how important true RMS readings are? Standard RMS measurement only gives an average reading and with anything other than a perfect sinewave, this reading can be as much as 50% out! With true RMS, you get an accurate measurement. Whereas this feature is only available in the top model from most other manufacturers, it is included as standard with the Martindale ET4000. This true RMS reading will ensure your recorded voltage levels really are within the new Cmin limits defined in amendment 3.

User settable pass limits
Some installations may require testing to specific pass values. The ET4000 allows you to set these limits manually, ideal if you have a number of engineers testing a site, or if you are training an apprentice.

CAT IV safety rating
Safety is paramount when it comes to testing. Using a tester on a system that it is not rated for can lead to serious injury or death. The ET4000 carries a CAT IV safety rating, offering a high level of user protection.

Easy to replace test leads
Having a test lead fail on a job can be a real headache. If you can't obtain a replacement quickly, you can lose time on a job. The ET4000 comes supplied with standard 4mm banana leads, this means you can easily get replacements from your local wholesaler if you need them urgently.

Rechargeable batteries
The ET4000 comes with rechargeable batteries. Charging is done in-situ, so you can leave it charging over night ready for a days testing. The batteries supplied are low discharge to optimise the battery life.

Comprehensive test functionality
Although advertised as the entry level model, this tester comes fully equipped and offers much more for your money. The full list of tests includes:

  • Insulation resistance at 50, 100, 250, 500 & 1000V
  • Continuity testing at 200mA & 8.5mA
  • Non trip & high current loop testing with PFC display
  • Auto RCD test sequence
  • RCD ramp test
  • AC, A, F & S type RCDs (10, 30, 100, 300, 500 & 1000mA)
  • True RMS voltage reading
  • Frequency & phase rotation measurement
More Information
ManufacturerMartindale
Manufacturer Part NumberMARET4000
GTIN5036162187025
ManualDownload
DatasheetDownload
Earth testNo
Type B RCD testNo
Insulation test 50VDC, 100VDC, 250VDC,500VDC, 1000VDC
Ranges 19.99MΩ/99.9MΩ/199.9MΩ
Continuity test Short circuit current >200mA
Ranges 19.99Ω/199.9Ω/1999Ω
RCD test 10mA, 30mA, 100mA, 300mA,500mA, 1000mA.

Type AC, A, F, S

0.5, 1, 5 x I auto and ramp test

Ranges 40.0ms/max time
Loop Test Dual display (Loop Resistance of PFC)

High Current L-L L-N, Non-trip L-PE

Ranges 9.99Ω/99.9Ω/999Ω/9.99kΩ
Voltage TRMS 0-550V

Frequency 9.99Hz/499.9Hz

Phase rotation

Complies with BS EN 61010-1

CAT III 600V

CAT IV 300V

BS EN 61557

BS 57671:2018 18th Edition

BS EN 61326-1

Dimensions 230 x 103 x 115mm
Weight 1.3kg approx
Includes TL36 3 lead set RBG, TL207 mains lead set RBG, TL180 Remote probe, soft carry case and strap, quick start plus CD, calibration verification certificate, 6×1.5V AA low-loss rechargeables, mains charger
  • Martindale ET4000 Multifunction Tester
  • MFT 3 lead set RBG – MARTL36
  • MFT mains lead set RBG – MARTL207
  • Remote start probe – MARTL180
  • Soft carry case and strap
  • Quick start plus full user guide on CD
  • Calibration verification certificate
  • Low discharge rechargeable batteries
  • Mains charger
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Why choose Instrotech for your electrical test equipment?

With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:

  • Free UK shipping on all orders
  • Access to our knowledgeable technical support team
  • Available calibration services to maintain safety compliance
  • A 90-day money-back guarantee for complete peace of mind

We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.