Kewtech KEW4200 Digital TRMS Earth Resistance Clamp

Kewtech Corporation

Kewtech Approved distributor.

The kewtech KEW4200 is a digital clamp-on earth resistance tester, and it is used in multi-earthed systems.

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Usually Stock or Short Lead Time

£ 699.30 rrp £ 999.00

save 30%

(£ 839.16 inc VAT.)

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The Kewtech KEW4200 can measure the earth resistance by simply clamping around the earthed wires. This instrument also has a AC current function to measure current up to 30A the same as traditional leakage clamp meters.


True RMS for highly accurate readings.
Measures earth resistance without auxiliary earth spikes.
Measures earth resistance from 0.05 to 1200Ω.
Noise check function.
Memory function saves up to 100 measurements.
Data hold memory function.
Buzzer function.
Back light.

Kewtech KEW4200 Specifications:

  • Earth resistance Auto range: 20Ω, 200Ω, 1500Ω.
  • Sample rate: Approx. 1 times per second.
  • Current consumption: Approx. 50mA (max. 100mA).
  • Conductor size: Approx. 32mm max.
  • Response time: Approx.7 seconds (Earth resistance), Approx.2 seconds (AC current).
  • Sample rate: Approx. 1 times per second.
  • Over-range indication: "OL" is displayed when input exceeds the upper limit of a measuring range.
  • Auto power-off: Turns power off about 10 minutes after the last button operation.
  • Power source: LR6 (size AA alkaline battery) × 4pcs.
  • Dimension: 246(L) × 120(W) × 54(D)mm.
  • Weight: Aprox 780g (including batteries).
  • Kewtech KEW4200 Warranty: 1 year.


Includes: Resistor for operation check, Batteries, Hard carry case, Instruction manual, Certificate of conformity.

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Kewtech KEW4200 Digital TRMS Earth Resistance Clamp