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Megger MFT1741+ Multifunction Tester 1012-611

NEW Get accurate results fast by testing your low voltage electrical installations with the MFT1741+ multifunction tester, now with electric vehicle service testing

Important Calibration Information

This instrument comes with a manufacturers calibration certificate.
Please see 'Calibration Options' in the description for more details.

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£945.00 exc. VAT £1,134.00 inc. VAT £1,962.00 inc. VAT
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FREE Gifts

This instrument comes complete with your choice of free gift from the drop-down menu above. Choose from a calibration voucher for next 
year, a 50m R2 wander lead or a set of quality silicone test leads. How about any one of the IET Guidance Notes, or a quality two-pole tester? 
Whatever you choose you can be sure you're getting a fantastic deal at Instrument Sales & Services.

Megger MFT1741+ Multifunction Tester with EVSE Testing Capability

Please Note: For EVSE testing you will require the Megger adapter EVCA210-UK available here.
                      Or as a complete kit included with the MFT1741+ available here.

Particularly effective in areas that suffer from high electrical noise, the Megger MFT1741+ provides all the tests needed to complete the necessary electrical certifications for industrial, commercial and domestic fixed wiring installations.

Save time and get non-trip loop testing down to 8 seconds with the MFT1741+’s new Loop Impedance testing technology! This innovative ability also increases the accuracy of results as it prevents the RCD from influencing the total loop impedance value. What’s more, you can measure the degree of confidence in the accuracy of the measured loop impedance, thanks to Megger’s new Confidence Meter measurement analysis (patent pending). This technology uses the digital ARC to indicate the analytical process, then continually monitors and adjusts the measurement when circuit noise is present, resulting in a dramatically improved and repeatable test result.

You can even test electric vehicle charge points with the MFT1741+! It comes with an automatic EV Charge Point RCD test sequence, including the 6 mA DC test*.

Easy-to-use and quick to learn, this instrument has no hidden menus or complicated screens but instead has colour-coded function controls that make range selection simple and speedy. Additionally, it can be operated ambidextrously with dual TEST and LOCK buttons at both sides.

The MFT1741+ is designed for tough environments, with IP54 protection against dust and water and an EN61010 CATIV safety rating. Indeed, the MFT can withstand accidental misuse and voltage transients, keeping you safe on the job.

Megger MFT1741+ Comes Supplied With:

  • 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 (BS1363)
  • AC battery charger
  • Large soft pouch with extra storage

*Important Calibration Information:

This instrument comes complete with the manufacturer's calibration certificate. Please be aware that these certificates are generic and may also be time lapsed.
If you would prefer a personalised full traceable calibration certificate applied to the equipment before dispatch, then please select this option from the drop-down menu above, an additional calibration charge will apply.

General Features:

Quick to pick up and use, the function controls are colour coded to make range selection easy and fast. They also reduce the chance of using the wrong function or range. The large crystal clear backlit display uses the Megger digital/analogue arc, providing indication of fluctuating readings while the dual digital readout shows precise values of key measurements simultaneously with the test parameters, such as the output voltage on insulation testing as well as the resistance value in MΩ.

Visible and audible safety warnings are paramount when testing high energy systems and the MFT1741+ includes full input protection and safety warnings when a hazardous voltage is present. If live voltages exist on a circuit during insulation or continuity testing, the voltage is displayed on the screen. If this voltage exceeds a safe level, further testing is inhibited and a warning beep sounds. The MFT1741+ features internally rechargeable batteries and charger with a charge time of less than 4 hrs, so reducing the cost of ownership. The new MFT1741+ has been designed for tough environments and ultimate reliability.

Features include a rubber over mould for extra protection and grip, IP54 protection against dust and water and an EN61010 CAT IV safety rating. Its class leading input protection ensures the MFT can withstand accidental misuse and voltage transients when other testers can’t. All this in an intuitive and easy to use instrument with no hidden menus or complicated screens. Included with the instrument: standard 3-wire lead-set and a mains test lead, a switched probe for fast and easy testing, a full 12-month calibration certificate and warranty upgradeable to 3 years warranty, free of charge. The MFT1741+ is supplied in a large soft pouch with plenty of additional space for optional extras like a few tools and the earth electrode test kit, comprising 2 spikes and 3 long test leads

Key Features:

  • Testing of Electric Vehicle Charge Points*
  • Enhanced non-trip loop impedance measurement technology
  • “Confidence meter” measurement analysis (patent pending)
  • 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*
  • Simple colour-coded test selection
  • Ambidextrous operation
  • Internal memory and Bluetooth® communications
  • EN61010 CAT IV safety rating and tough IP54 case

The MFT1741+ multifunction tester is an instrument designed for testing low voltage electrical installations and especially in locations that suffer from high electrical noise. It provides all the tests required to complete the necessary electrical certification for industrial, commercial and domestic fixed wiring installations, and includes:

  • TRMS System voltage and frequency measurement 
  • Insulation test at 100 V, 250 V, 500 V and 1000 V Including input protection against live circuits up to 600 V even when insulation test is locked-on
  • Continuity resistance at 200 mA or 15 mA 
  • Automatic start - no need to press TEST so leaving both hands free to hold probes 
  • Resistance range up to 100 kΩ with fast continuity buzzer at selectable thresholds 
  • Earth loop impedance testing, with:
    New 3 wire non-trip technology
    New confidence meter measurement
    2 and 3 wire non-trip range
    2 wire Hi current including phase to phase
    Prospective fault current measurement up to 20 kA
  • RCD testing including:
    Type ac, A, S, B and programmable RCDs
    Testing of Electric Vehicle Charge Points RCD’s*
    3-phase RCDs
    Auto-test routine
    EV Charge Point RCD Testing
  • Earth spike testing
    2-pole/3-pole*, ART* and Stake-less* techniques

* With appropriate optional accessories

New Loop Impedance testing technology:

The MFT1741+ includes a new non-trip loop testing technology that:

  • 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.

New “Confidence meter*” measurement analysis (Patent pending)

Overlaying the new non-trip loop impedance measurement is the new Megger “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 electric vehicle charge point testing

The MFT1741+ includes an automatic EV Charge Point RCD test sequence, including the 6 mA dc test*.
Test results can be reviewed or saved to memory and reviewed later.


The MFT1741+ offers a wide range of test functions, designed for all electrical installation testing and verification of low voltage building wiring and distribution testing scenarios. The MFT1741+ is IEC 61010 CAT IV 300 V rated for safe connection anywhere within the LV network on single and 3 phase systems. The unique modern styling allows it to be operated while stood on the floor, whilst up a ladder or platform, and optimised for hanging around the user’s neck. Dual TEST and LOCK buttons - one pair at each end - makes the testers easy to operate left or right handed.

Spares & Accessories (Not Supplied):

  • Fused 10 A test lead set (red/blue/green) with prods and clips 1001-975
  • XTL30 Extension Test Lead 30 m 2007-998
  • XTL50 Extension Test Lead 50 m 2207-997
  • Cigar lighter adapter for battery charging 6280-332
  • Switched Probe SP5 (silicone) 1001-687
  • MCC1010 Current measuring clamp 1010-516
  • MVC1010 Voltage inducing clamp, calibration 1010-518
    check pcb (for stakeless test) and lead
  • Electrode kit 1001-810
  • Test and carry pouch 1006-408
  • 3 Pole Earth Test Kit 6210-160
  • ETK30 (3 Pole Earth Test Kit) 1010-176

ISSWWW and Megger

The extensive Megger product portfolio provides electrical test equipment for an exceptionally wide range of applications at any point of the electricity network. From small handheld low voltage equipment such as multifunction installation testers through to high voltage asset test equipment like insulation resistance testers, circuit breaker analysers, protection relay test systems to transformer condition measurement devices.

Megger designs and manufactures portable electrical test equipment in factories located in Germany, Sweden, the UK, and USA. Megger products help you install, improve efficiency, reduce cost and extend the life of you or your customers’ electrical assets.

Established in the late 1800s, the company has been designing and making test and measurement instruments that perform electrical measurements for preventative maintenance, troubleshooting and commissioning for decades. Megger products have supported customers all over the world to improve their facilities’ efficiency, reduce costs, extend the life of apparatus and through trending and analysis, anticipate equipment failure and future performance.
Being a brand synonymous with the industry and a cornerstone pioneer of many of today’s everyday items of test equipment, ISSWWW are proud to bring you Megger’s full range of equipment and services, now and into the future.

Megger MFT1741+ Multifunction Tester Technical Specifications

Insulation Test
Output voltage -0% +20% at rated load or less
Voltage display ±3% ±3 digits ±0.5% of rated voltage
Short circuit current 1.5 mA nominal test current
Test current on load 1 mA at min pass values of insulation
Insulation Accuracy 
1000 Volts 10 kΩ ~ 999 MΩ ±3% ±2 digits
500 Volts 10 kΩ ~ 500 MΩ ±3% ±2 digits
>500 MΩ ±10% ±4 digits
250 Volts 10 kΩ ~ 250 MΩ ±3% ±2 digits
>250 MΩ ±10% ±4 digits
100 Volts 10 kΩ ~ 100 MΩ ±3% ±2 digits
>100 MΩ ±10% ±4 digits
Resistance and Continuity 
0.01 Ω ~ 99.9 Ω ±2% ±2 digits
100 Ω ~ 99.9 kΩ ±5% ±2 digits
Open circuit voltage 5 V ±1 V
Test current (user selectable) (0 Ω ~ 2 Ω)
205 mA ±5 mA
15 mA ±5 mA (user selectable)
Loop Test
Live to earth/neutral supply 48 V ~ 280 V (45 Hz ~ 65 Hz)
Live to live supply 48 V ~ 500 V (45 Hz ~ 65 Hz)
L-N/L-L tests ±5% ±5 digits
L-E tests 0.1 Ω ~ 39.9 Ω ±5% ±5 digits ± noise margin
40.0 Ω ~ 1000 Ω ±10% ±5 digits
Display range 0.01 Ω ~ 1000 Ω
Live to earth PFC range 20 kA
Live to live PSCC range 20 kA

† Reference conditions apply

For test environments see service data

RCD Tests
Supply up to 100 mA 48 V ~ 480 V (45 Hz ~ 65 Hz)
Supply up to 1 A 48 V ~ 280 V
RCD type Type AC, A, S
Type B (pure dc)
No trip test (1/2xI) –10% ~ –0%
Trip test (1xI, 2xI and 5xI)+0% ~ +10%
EV 30 mA ac, 6 mA dc (Mode 1 + 2)
(Mode 1 + 2) Ramp Test
Touch voltage (0 ~ 253 V) +5% +15% ±0.5 V
Trip time ±1% ±1 ms
Trip current ±5%
Step Increments
VAR (variable RCD selection) 10 mA ~ 50 mA 1 mA steps
50 mA ~ 500 mA 5 mA steps
500 mA ~ 1000 mA 10 mA steps
Supply Measurement 
Voltage 10 V ~ 600 V
(15 ~ 400 Hz) True RMS
±3% ± 1 V ±2 digits
Phase rotation indication L1–L2–L3 and L1–L3–L2
Frequency 15 Hz ~ 99 Hz ±0.5% ±1 digit
100 Hz ~ 400 Hz ±2.0% ±2 digits
Frequency resolution 0.1 Hz
Power Supply 
Batteries IEC LR6 type AA alkaline (6 cells - supplied) or 1.2 V NiMH (rechargeable pack of 6 – supplied)
Mains charger for on-board re-charging (4 hours typical) 12 V car charger (cigar lighter lead - optional)
Earth/ Ground Test
Resolution 0.01 Ω
Current 0.45 mA or 4.5 mA
Noise rejection 20 V pk/pk (7 V rms)
Max probe resistances Rp and Rc
100 kΩ @ 50 V
5 kΩ @ 25 V
2 and 3 pole method (0.01 Ω ~ 1.999 kΩ)
±2.0% ±5 digits
ART method (1.00 Ω ~ 1.999 kΩ)
±5.0% ±5 digits*
Stakeless method  (1.00 Ω ~ 199 Ω)
±7.0% ±5 digits*
(via optional clamp meter) ±5.0% ±3 digits.
Range 0.1 mA to 200 A ac
Resolution 0.1 mA
mV Sensor Input 
Including temperature (third party module) ±1.0% ±2 digits
Range 0.0 mV to ±199.9 mV dc
Resolution 0.1 mV
Data storage
Capacity 1000 results
Bluetooth® communication
Safety IEC 61010-1:2010
IEC 61010-30:2010
IEC 61010-031:2008
600 V CAT III / 300 V CAT IV
(Max Phase to Phase 600 V)
IEC 61557:2007 parts 1 to 10
EMC IEC61326 edition 2 location class B
Operating temperature range and humidity -10 °C ~ +55 °C
90% R.H. at +40 °C max
Storage temperature range and humidity -25 °C ~ +70 °C
Maximum altitude 2000 m
Weight (instrument and case) 1 kg (with batteries, excluding case)
Dimensions (instrument and case) 220 mm H x 390 mm W x 285 mm D
IP rating IP54
Calibration temperature +20 °C
Temperature coefficient <0,1% per °C For test environments see service data.

Delivery Notices (Updated March 29th 2021)

During the current situation surrounding the effects of the Coronavirus pandemic, logistics from every company are under immense pressure to deliver goods on time.
Coupled with manufacturers on reduced output due to more stringent working practices and a global shortage of component parts to supply UK manufacturing, we have taken the decision to 
temporarily limit our services rather than let our customers down amid these unprecedented circumstances.
We hope you will understand our position on this and we apologize unreservedly for the inconvenience we know it will cause.

Please note that ALL orders placed before 3:00pm are shipped same-day (subject to stock and any additional services required).
The stated transport times above have some scope for adjustment built-in for the Covid-19 situation. Carriers themselves also have their own extended workload and limitations at this time which are unfortunately beyond our control.

Orders requiring calibration 

Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received PM and requiring
calibration may on occasion miss dispatch that day, according to the complexity of the calibration. Be assured they will ship on the next dispatch
this in most cases should not add more than 24 hours to your delivery.

Bank/Public Holidays

Predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scope
of our dispatch and subject to activities/holidays of our carriers and therefore may incur additional days lead time to your order.

*UK Mainland (Revised March 2021)

Service  Price 
Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value OVER £75.00 ex VAT - Order by 3:0pm FREE
Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value UNDER £75.00 ex VAT - Order by 3:0pm £4.75
Next WORKING Day (excludes Saturdays, Sundays and public holidays)  – UK Mainland only - Zones A & B  - ANY order value - Order by 3:0pm      £7.75
Saturday ANYTIME Delivery - Order by 3:0pm £9.95

New Postage Map Sept 2018>

Delivery Surcharges

Because of the high cost of carriage, we regretfully need to apply a surcharge on all deliveries made in the following regions:

  • Zones A & B  - Mainland delivery rates apply. 
  • Zone C - Scottish Highlands (Charges are calculated at the checkout).
  • Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands (Charges are calculated at the checkout).
  • Zone E - Northern Ireland (Charges are calculated at the checkout).
  • Zone F - Republic of Ireland (Charges are calculated at the checkout).

Offshore Services

All offshore deliveries are a 3-4 day service as standard. This includes Channel Islands, Northern & Southern Ireland, Scottish Islands, Isle of Man and the Scilly Isles.

International delivery

International delivery charges are automatically added to your order at the checkout. For any questions regarding international deliveries please contact us at


All export inquiries should be directed to the export division before placement of order.

If no shipping option is available to your selected country please call us FREE on 0800 0224 060 to purchase your items.
All stated prices are subject to VAT at the current rate where applicable.