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Megger MFT1741 Multifunction Tester

Megger MFT1741 Multifunction Tester
sku: MFT1741
Over 10 In Stock

Free UK Delivery On Orders Over £40
  • The latest in Megger’s MFT1700 Series, this product features a unique (patent pending) algorithm for earth loop impedance testing
  • Able to perform quick, repeatable 3-wire non-trip loop tests on noisy and quiet circuits, without tripping a vast majority of RCDs and RCBOs
  • Results obtained during 3-wire non-trip loop tests are unaffected by RCD and RCBO impedance and are accompanied by a confidence meter indicating each result's reliability

RRP: £1,515.00
£875.00 Incl. VAT £1,050.00
RRP: £1,515.00
£875.00 Incl. VAT £1,050.00
Members earn 1750 points

Do you have a question or found it cheaper? Contact us

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Megger MFT1741 Multifunction Tester Details

The Megger MFT1741 Multifunction Tester is a comprehensive, sophisticated low voltage installation tester. It is the latest in Megger’s series of MFT1700 Multifunction testers and features a unique (patent-pending) algorithm for earth loop impedance testing.

This unique algorithm facilitates the Megger MFT1741’s ability to perform quick, repeatable 3-wire non-trip loop tests on noisy and quiet circuits. The results obtained from these tests are unaffected by RCD and RCBO impedance and the test itself will not trip a vast majority of RCDs and RCBOs, with the exception of 30mA Type B. Should the user wish to test a circuit containing these rare Type B RCD and RCBOs, he/she need only select the Type B loop test option. This multifunction tester is particularly well suited to testing circuits which include 10mA RCDs and RCBOs, such as those present in schools.

Further to this, the patent-pending algorithm ensures that all the results attained via the Megger MFT1741’s 3-wire non-trip loop tests are accompanied by an arc indicating the reading’s reliability. For instance, should the user perform a loop test on a quiet circuit the Megger MFT1741 will respond swiftly with a provisional reading accompanied by a large visual arc, indicating the readings uncertainty; once this reading has stabilised (after approximately eight seconds) the large arc will shrink to a single element, indicating that the reading is now highly reliable.   

With regards to noisy circuits the tester will gradually reduce the arc as the reading becomes increasingly stable; however, should the noise in the circuit increase the size of the arc will also expand, indicating the result's increased unreliability.

In addition to performing 3-wire non-trip loop tests, the Megger MFT1741 Multifunction Tester can also be used to carry out a number of other loop tests, such as:

  • 2-wire non-trip loop tests (no neutral)
  • High-speed, 2-wire, high current loop tests on unprotected circuits

Like the Megger MFT1731, this product can also be used to test insulation and earth electrodes, as well as take continuity, resistance, frequency and true-RMS voltage measurements. Similarly, this product also features single and three phase RCD testing and phase rotation.

The results taken using the Megger MFT1741 Multifunction Tester are displayed on its large, LCD display with dual parameter indication: this multifunction tester can simultaneously display loop resistance and fault current, or insulation resistance and test voltage parameters. These results can also be stored in the Megger MFT17741’s internal memory or can be downloaded using its built-in Bluetooth connectivity.

Like its sister models, the Megger MFT1441 features a colour coded test selection and a robust casing which protects the instrument against dust and water ingress (IP54). Furthermore, this product also has a safety rating of EN61010 CAT IV and includes audible and visual safety warnings triggered by hazardous voltages. The Megger MFT1741 will also prevent further testing if a dangerous voltage is present.  

The Megger MFT1741 Multifunction Tester with Loop Confidence Meter combines Megger’s MFT1700 easy-to-use, accurate and safe features with a new unique algorithm for earth loop impedance tests; thereby ensuring that this product is the most sophisticated and versatile of the Megger MFT1700 series.  

Megger MFT1741 Multifunction Tester with Loop Confidence Meter

  • NEW: Comprehensive low voltage installation tester with a unique, patent-pending algorithm for earth loop impedance testing
  • NEW: Performs quick, repeatable 3-wire non-trip loop tests on noisy and quiet circuits
  • NEW: Results are not affected by RCD and RCBO impedance
  • NEW: 3-wire non-trip loop impedance tests will not trip a vast majority of RCDs
  • NEW: Type B loop test option for performing 3-wire non-trip loop tests on circuits containing 30mA Type B RCD or RCBOs
  • NEW: Ideal for conducting 3-wire non-trip loop tests on circuits including 10mA RCDs and RCBOs
  • NEW: Built-in confidence meter: arc will decrease as the reliability of the reading increases
  • 2-wire non-trip loop tests (no neutral)
  • High-speed 2-wire high current loop tests on unprotected circuits
  • Continuity measurements
  • Resistance measurements
  • Frequency measurements
  • True-RMS voltage measurements
  • Insulation testing
  • Earth electrode testing
  • Single and three phase RCD testing
  • Phase rotation
  • Large, LCD display with dual parameter indication
  • Internal memory
  • Bluetooth communication
  • Robust casing
  • IP54, protected against water and dust ingress
  • Safety rating of EN61010 CAT IV
  • Audible and visual safety warnings for hazardous voltage levels
  • Prevents testing when hazardous voltage levels have been reached
  • Colour coded test selection

What’s Included?

  • Megger MFT1741 Multifunction Tester with Loop Confidence Meter 
  • Printed Quick Start Guide
  • Full User Guide on CD
  • Calibration Certificate
  • Switch Probe SP5
  • Neck Strap - Megger Embroidered
  • Three Wire Lead Set with Prods and Clips
  • Mains Plug Test Lead (BS1363)
  • AC Battery Charger
  • Large Soft Pouch with Extra Storage 


There are a number of additional accessories available for the Megger MFT1741 Multifunction Tester; please see the table below for details. For further information please contact our sales team prior to purchase. 

Our Stock Code Megger's Part Number  Product
1006-408 1006-408 Test & Carry Pouch MFT1700 Series
1005-135 1005-135 Unfused Lead Set Si Red/Blue/Green
ICLAMP 1001-012 ICLAMP Current Clamp
VCLAMP 1001-013 VCLAMP Voltage Clamp
1010-518 1010-518 MVC1010 Voltage Clamp
1010-516 1010-516 MCC1010 Current Clamp
1011-275 1011-275 MCC1010 Lead Accessory
1011-274 1011-274 MVC1010 Lead Accessory
2007-998 2007-998 XTL50 Extended Test Lead (50 m)
2007-997 2007-997 XTL30 Extended Test Lead (30 m)
2001-649 1004-319 Blow Moulded Case MFT17/1800   
MEGMTA4 1004-326 Instrument/Document carry case
MEGLOA20 1004-183 DC Car Charger 2.5mm Pin
1007-003 1007-003 Case Catch - Pack of 10  
1002-735 1002-735 Battery NiMH (X6) - MFT17/18
MEGMTA33 1002-736 Charger Power Supply  - MFT1700/1800 Series
1007-463 1007-463 MFT Carry Case - Large
1001-975 1001-975B Fused LeadSet B,R,G F10A 50kAb (Boxed)
1001-977 1001-977B Fused Lead Set Red Green F10A 50kA (Boxed)
MEGMTA1 1001-991B Unfused Lead R/G/B, R/B LgTip (Boxed)
MEGITA1 1002-001B Unfused Lead Set, Red/Black (Boxed)
MEGRCDA4 1002-015B Fused Lead Set, Red/Black (Boxed)
1002-490 1002-490B Prod & Clip Set- MFT/LOOP Boxed
1001-976 1003-132B Unfused Lead Set Red, Green (Boxed)
6220-810 1004-323B SIA10 Interface Adaptor UK 3-Lead(Boxed)
1002-774 1007-157B SP5 Remote Switched Probe (Boxed)
2001-509 1007-161B Carry Strap MFT17/18 Accessory
1001-811 1001-810 Earth Test Spike Kit
MEGSW1 1000-631 Megger Powersuite Lite - 17th Edition and PAT Certification Software
MEGETA17 6210-160 Megger ETKIT3 Earth Test Kit - 3 Terminal
MTB7671 1002-224 MTB7671/2 Megger Test Box
Please note that the accessories listed above and the datasheets attached are subject to change. Both were correct at the time of publication.
Accessories (16)

Megger PowerSuite Pro-Lite PAT Tester Software
RRP: £295.00
£205.00 Incl. VAT £246.00
Megger 1001-991B MFT Multifunction Tester Replacement Test Leads
RRP: £61.00
£38.12 Incl. VAT £45.74
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Technical Specs

Part Code: 1009-986

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

(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%
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

10 V ~ 600 V

(15 ~ 400 Hz) True RMS

±3% ± 1 V ±2 digits

Phase rotation indication L1–L2–L3 and L1–L3–L2

15 Hz ~ 99 Hz ±0.5% ±1 digit

100 Hz ~ 400 Hz ±2.0% ±2 digits

Frequency resolution 0.1 Hz
Power supply

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% ±3 digits

ART method (1.00 Ω ~ 1.999 kΩ)

±5.0% ±3 digits*

Stakeless method (1.00 Ω ~ 199 Ω) ±7.0% ±3 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

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


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 2000m
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 co-efficient <0,1% per °CFor test environments see service data.

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Review by Steve Arthur (Posted on 03/04/2018)


its a megger, need one say more.

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