Megger MFT1741 Multifunction Tester



  • The newest 18th Edition tester from Megger
  • NEW confidence meter for loop testing on noisy circuits
  • Full single and 3 phase compliant installation testing
  • FREE 3 year warranty (product registration required)
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Price MatchNo
Warranty3 years
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Megger MFT1741 18th Edition Multifunction Tester

The MFT1741 multifunction tester has been designed for testing single and three phase low voltage domestic, commercial and industrial electrical installations, providing all the tests required to complete the necessary electrical certification. All with an EN61010 Cat IV safety rating too.

Built to last and take the strains of everyday testing, the Megger MFT1741 is robust, featuring a large central back lit screen with test buttons situated either side for accessibility for both right and left handed users. Smooth single click rotary dials and large buttons make for easy operation even when wearing gloves. The unit is also IP54 rated, perfect for dusty environments and for the often unpredictable British weather!

The Megger MFT1741’s new 3 wire loop impedance test uses a combination of test currents and measurement methods to eliminate RCD impedance uplift.

Overlaying the new non-trip loop impedance measurement is the new “confidence meter”. As loop impedance values can be dramatically affected by circuit noise, the Confidence Meter displays the degree of confidence in the accuracy of the measured loop impedance via an expanding and contracting arc.

Megger MFT1741 Overview

How does the confidence meter arc work?

Circuits with low / no noise.
The display shows a full width analogue arc, consisting of 51 elements. At the start of the test all elements are displayed. The instrument will then check for any adverse electrical noise. If nothing is found the test sequence will terminate and display a final value. The arc closes to one centre element, indicating the maximum degree of confidence in the result.

Circuits with high noise / distortion.
On detecting noise on the supply the Confidence Meter will continue testing and refining its measurement. This is shown by the noise symbol to the left of the display appearing and the arc closing more slowly, pausing or even opening up again in high noise situations. When the confidence meter has refined its measurement, the arc will finally close to one element and the test will stop. The final displayed result may differ from the original quite significantly.

Extreme noise may cause the loop test measurement to continue for over a minute. In this case the tester will stop automatically and the size of the arc will indicate how good the meter believes the displayed value is.

The 1741 also protects against accidental misuse, giving both visual and audible warnings if the unit detects voltages exist on the circuit. Testing will be inhibited to prevent serious damage. Also, save money on batteries as the MFT1741 includes rechargeable batteries and charger, with a charge time of less than 4 hours.

Megger Multifunction Tester Series Comparison

Loop testing
Megger 2-wire no-trip test L-PE
Coventional 3-wire no-trip test L-PE-
New algorithm 3-wire no-trip test L-PE--
Confidence meter--
Max. Zs display
R1 + R2 value--
PSCC and PFC (20kA max.)
L-N/L-E 48V to 280V, 45 Hz to 65 Hz
L-N/L-E 48V to 480V, 45 Hz to 65 Hz-
Insulation testing
250V, 500V and 1kV test voltages
100V test voltage-
Adjustable buzzer threshold-
Continuity and resistance
200mA test current for certification
15mA test current to prolong battery life-
Auto start continuity test
Adjustable buzzer threshold
Voltage / Frequency and Phase Rotation
10V to 600V AC and DC
Frequency 15Hz to 400Hz
Phase Rotation-
RCD testing
10, 30, 100, 300, 500mA RCDs
1000mA RCDs-
High Speed auto RCD test
Ramp test for RCD fault finding
Type A, type AC and Type S RCDs
Programmable RCDs
Type B RCDs-
3 phase (no earth) RCDs-
Earth electrode resistance testing
Stakeless or clamp on testing**--
3-wire testing for fall of potential or 62% rule--
Attached rod technique 3-pole testing--
Option of 25V and 50V output--
Ground noise check--
Additional benefits
CAT IV 300V / CATIII 600V rated
Remote test probe-
Current measurement 0.1mA to 200A *--
On-board recharging--
On-board memory--
Bluetooth downloading from memory--
Hard plastic carry case
Large soft carry case--
Calibration certificate included

*Requires optional iClamp **Requires optional i and vClamp

Why buy your Megger MFT1741 from Test4less?

We are a trusted Megger distributor and service centre, meaning we can take care of your Megger MFT1741 from day one, as well thorughout the life of your instrument. This includes, servicing, calibration and repairs if required.

Our Multi function calibration service is competitively priced and can be booked online. Plus our popular collection and delivery service for only £4.95 ex VAT means your annual calibration costs are kept low.

What's included

  • Megger MFT1741 Multifunction Tester
  • Printed quick start guide
  • Full user guide on CD
  • Calibration certificate
  • Switched probe SP5
  • Neck strap - Megger embroidered
  • 3 Wire lead set with prods and clips
  • Mains plug test lead
  • Battery charger
  • Large soft pouch with extra storage
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