Megger LTW325 Loop Tester


Megger approved distributor and service centre.

The Megger LTW325 two wire earth loop tester verifies the loop impedance of a live electrical circuit, ie without the need to disconnect the electrical supply.

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Usually Stock or Short Lead Time

£ 432.90 rrp £ 555.00

save 22%

(£ 519.48 inc VAT.)

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The Megger LTW325 Loop Impedance Tester is three phase safe and category IV 300V rated, making it suitable for use on supplies from 50V to 300V AC single phase, as well as on 440V three phase installations.

Megger Loop Impedance Testers use the latest digital processing techniques to separate the test signal from the fundamental frequency of the supply. This means the Megger LTW325 automatically averages a large number of results over the duration of the test. This enables non trip testing to be performed without DC injection, a technique which is, in any case, proving ineffective with electronic RCDs.


2 Wire Non-tripping loop tester.
50 V to 440 V operation.
110 V centre-tap loop testing.
CATIV installation testing.
AUTO start - operation.
0.01 Ω resolution.

Megger LTW325 Specifications:

  • 2-wire non trip loop testing.
  • 2 wire fast testing (high current).
  • Suitable for use on 110V to 280V applications.
  • Also suitable for use on 50V to 440V applications.
  • Phase to phase testing.
  • 20 KA PFC range.
  • 0.01Ω resolution.
  • Automatic noise detection and correction.
  • Auto loop test initiation.
  • Voltage and frequency measurements.
  • Max Zs display.
  • R1 + R2 display.
  • E.M.C: In accordance with IEC61326-1.
  • IP54 Weatherproof Case.
  • Power Supply: 8 x 1.5V Cells IEC LR6 Type (AA Alkaline).
  • Battery Life: 2000 consecutive tests.
  • Dimensions: 203 x 148 x 78mm.
  • Weight: 1000g ±10% excluding test leads.
  • Megger LTW 325 Warranty: 3 year.


Includes: Megger LTW325 Earth Loop Tester, BS1363 to 3 x 4mm Socket Leadset, 2 Wire Leadset with Croc Clips, Schuko Plug Test Lead - EU-SC, AU/NZ Plug Test Lead - EU-AU, Hard Carry Case and User CD.

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Megger LTW325 Loop Tester