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MFT1741 Multifunction Tester

Megger MFT1741 Multifunction Tester designed for testing LV electrical installations (high electrical noise not a problem). Perfect for industrial, commercial & domestic fixed wiring installations.

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2088.00 incl. VAT)
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Megger MFT1741 Multifunction Tester with Loop Test / Confidence Meter

The Megger MFT1741 Multifunction Tester, like the rest of the range, includes:

  • Standard Insulation and Continuity Testing
  • RCD Testing
  • Full Earth Electrode Testing
  • 2-wire High Current Testing
  • 2-wire Non-Trip Earth Loop Impedance Testing
  • In addition... Megger have included a patented 3-Wire Non-Trip Earth Loop Impedance test which incorporates a ground-breaking Confidence Measurement that is not affected by RCD or CBO Impedance or system noise.

New features make the Megger MFT1741 a very attractive package!

MFT1741, a Single and 3-Phase Installation Tester offers a class-leading input protection system as well as having an IP54 environmental rating. It is also CAT IV safety rated and comes with a standard test lead set, a full calibration certificate, and a three year warranty.

The MFT1741 enables much faster non-trip testing on quiet circuits (8s instead of 15s) and provides significantly more repeatable results on noisy circuits. With RCD impedance immunity, the readings are not susceptible to the additional impedance often seen in standard loop tests.

The Confidence Meter also gives an indication of the “QUALITY” of the measurement during, and at the end of the test, using the ARC display.

New features, combined with toughness, ease-of-use and reliability = a very attractive package!

Megger MFT1741 Dial Options/Tests

In the first dial position there is a standard Voltage / Frequency test along with a Phase Sequence meter, followed by the Continuity Testing function, and Insulation Test function at 100 volts, 250 volts, 500 volts and 1kV. Following on from this you‘ll find a Loop Impedance Tester which includes the Z-MAX facility.

The MFT1741 offers a high-spec RCD Tester, plus Megger‘s industry renowned Rapid Auto Tests along with a Ramp Test for testing types: A, AC, type B and variable RCDs.

Working around the dial options you can see the Current Transformer Input, using an optional current transformer will allow you to take Current Measurements for diversity, or for earth leakage.  Finally there is an Earth Electrode or Ground Stake Resistance testing function which enables standard 3-wire testing, ARC (Attached Rod Technique), and the stake-less test method.

▶ Video: How to use the Megger MFT1741:

Thumbnail for the Megger MFT1741 video

▶ Video: 3-wire ground stake/earth resistance testing:

Thumbnail for the Megger 3-Wire Ground Stake Testing or Earth Resistance Testing video

Megger MFT1741 Key Features:

  • Recharge the batteries without removing them from the tester!
  • Stores up to a 1000 results internally (results downloaded or recalled directly back to the screen)
  • Internal memory and Bluetooth communications
  • Enhanced Non-Trip Loop Impedance Measurement technology
  • Confidence Meter measurement analysis
  • Full, Single and 3-Phase compliant Installation testing
  • 10 mA to 1 A Single and 3-Phase RCD testing
  • Earth Testing and Stake-less testing for electrode resistance measurement (with appropriate optional accessories)
  • Simple colour-coded test selection
  • Ambidextrous operation

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. Using the digital ARC to indicate the analytical process, the measurement is continually monitored and adjusted when circuit noise is present, resulting in a dramatically improved and repeatable test result.


New non-trip loop impedance measurement Megger calls the “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.

  • Prevents any influence the RCD may present to the total Loop Impedance value
  • Faster Non-Trip Loop testing down to 8 seconds

This technique also allows testing of loop impedance through 10mA type AC and Type A RCDs.


The Megger MFT1741 Confidence Meter

“Confidence Meter” adaptive loop impedance meter.

Figure 1. The display shows a full width analogue arc, consisting of 51 elements. At the start of the test all elements are displayed.

Figure 2. 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, as shown in the sequence shown in Fig. 2

Read more about it here

What comes with the Megger MFT1741?

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


Comparison Chart for: Megger MFT1741 Multifunction Tester

Earth loop impedance ranges
Conventional 3-wire no-trip test L-PE
New algorithm 3-wire no-trip test L-PE
Confidence meter
Tests through 10 mA RCDs
Tests through 30 mA RCDs
2-wire no-trip test L-PE
L-PE 48 V to 280 V, 45 Hz to 65 Hz
2-wire high current test
L-N / L-E 48 V to 280 V, 45 Hz to 65 Hz
L-N / L-E 48 V to 480 V, 45 Hz to 65 Hz
PSCC or PFC calculations displayed with loop impedance
Up to 20 kA fault current
ZMAX value retained
Calculated R1 + R2
Insulation resistance range
250 V, 500 V and 1 kV test voltages
100 V test voltage
Applied voltage display
Adjustable buzzer threshold
Full protection against live circuits
Continuity and resistance range
200 mA test current for certification
15 mA test current to prolong battery life
Auto-start continuity test
Adjustable buzzer threshold
Voltage, frequency and phase rotation range
10 V to 600 V AC and DC
True RMS
Frequency 15 Hz to 400 Hz
Phase rotation
RCD testing range
10, 30, 100, 300, 500 mA RCDs
1000 mA RCDs
1/2 I, I and 5 I tests
0° and 180° phase angle
High speed auto RCD test
Ramp test for RCD fault finding
Type A, type AC and type S RCDs
Programmable RCDs
Type B (pure DC) RCDs
3-phase (no earth) RCDs
Touch voltage display 0 V to 253V
Earth electrode resistance range
Stakeless or clamp on testing**
3-wire testing for fall of potential or 62% rule
Attached rod technique 3-pole testing
Option of 25 V and 50 V output
Ground noise check
Intelligent safety system
Test inhibit
Safe contact
Live safety warning
Auto discharge
Additional benefits
Analogue arc
Probe incorporating test button
Current measurement 0.1 mA to 200 A*
On-board recharging
On-board memory
Bluetooth downloading from memory or blobbing
Hard plastic carry case
Large soft carry case
Weather and dust proof to IP54
Safety rated to CAT IV 300 V
Calibration certificate
1 year warranty, upgradeable to 3 years
Notes:**Requires optional MCC1010 and MVC1010*Requires optional MCC1010


Accessory Code Description Price (Ex VAT)
1001-810 Earth Test Spike Kit (Electrode kit) £74.00 ADD
1006-408 Test and Carry Pouch £57.00 ADD
1001-975b Test Lead Set Red/Blue/Green Fused F10A 50kA (Boxed) £71.00 ADD
1004-323b SIA10 Interface Adaptor UK 3-Lead (Boxed) £39.00 ADD
1007-157b Remote Switched probe SP5 CAT IV 600 (Boxed) £69.00 ADD
1004-319 Blow Moulded Case MFT1700/MFT1800 Series £36.00 ADD




Spend the money and test safer. The 2 lead test is fantastic and easy to use, and a lot safer than juggling around with 3 leads. Megger is the pioneer when it comes to electrician's test equipment. I’d be lost without it. The rechargeable unit saves money on batteries, when not in use charge it once a week or depending how much testing you do. I charge mine once a week and still enough power to complete all my tests. Now with the added function of auto rcd saves a lot of walking. Well worth the money 100 percent.