Megger MFT1721 Multifunction Tester

⚡ Two and three-wire non-trip loop testing for fast repeatable results

⚡  Large bright LCD display showing dual parameters – loop resistance and fault current, insulation resistance and test voltage

⚡ Phase rotation indication for verification of rotating machinery

⚡ 3-phase RCD testing for industrial applications with no earth

£780.00 exc VAT / £936.00 inc VAT

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Product Details:

This latest series of multifunction installation testers adds one to the nomenclature and vastly to the value of these testers. The range of 3 instruments is expressly for testing low voltage electrical installations to BS7671. They provide all the tests required to complete the necessary electrical certification for industrial, commercial and domestic fixed wiring installations.

MFT1721, the most popular of the range of 18th Edition testers, with auto RCD testing and phase rotation, 3-phase RCD testing and current measurement with the optional clamp.

With an additional 100V insulation test range, true RMS voltage measurement, mV sensor input and Type B RCD testing.

Key Features:

  • System voltage and frequency measurement TRMS „
  • 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 test „
  • 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


Insulation Test

  • Ranges: 100V, 250V, 500V & 1000V
  • Test Voltage Display
  • Adjustable Buzzer Threshold

Continuity & Resistance

  • 200mA & 15mA Test Current
  • Adjustable Buzzer Threshold

Loop Testing Ranges

  • 2-Wire Non Trip Loop Test L-PE 50V-280V
  • 2-wire Hi current L-N 50 V ~ 280 V
  • 2 wire phase to phase L-L 50 V ~ 500 V
  • PSCC and PFC (20 kA max.)
  • Max Zs display
  • R1+R2 value
  • Touch voltage display on faulty earth

RCD Testing

  • 1/2I, I, 5I and ramp RCD test
  • Auto RCD test
  • Type AC, A and S RCDs
  • Type B (pure DC) RCDs
  • Programmable RCD
  • 3-phase RCD (no earth)
  • 10, 30, 100, 300, 500 and 1000 mA RCD

Voltage & Frequency

  • 10V – 600V AC / DC Voltage
  • True RMS
  • Leakage current measurement
  • Phase Rotation
  • Frequency Range: 15Hz – 400Hz

Additional Information

  • Bright Easy-to-Read LCD Display
  • Current Measurement with Optional Clamp
  • Free Megger Calibration Certificate
  • Free Warranty Upgrade to 3 Years
  • Dust & Weatherproof to IP54
  • CAT IV 300V Safety Rating
  • Megger MFT1721 Multifunction Installation Tester
  • Complete set of unfused Test Leads, Probes & Croc Clips
  • Megger end-of-line Calibration Certificate
  • SP5 Switched Remote Probe
  • Megger Neck Strap
  • UK Mains Plug 3 wire test lead
  • Printed Quick Start Guide
  • Full User Guide on CD
  • Three Year Guarantee
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