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Kewtech KTD50 Digital RCD Tester
  • Kewtech KTD50 Digital RCD Tester
  • Kewtech KTD50 Digital RCD Tester

Kewtech KTD50 Digital RCD Tester

kewtech approved distributor

Includes: KTD50 tester, KAMP13 - Mains Test lead only, Certificate of Conformity.

£216.75 Save 25%
Tax excluded
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The Kewtech KTD50 is a comprehensive RCD tester that tests type AC and ACS RCDs from 30mA to 500mA (see specifications below). Special RCD features include an auto, ramp and  x 2 I ∆N test.

In the auto-test mode the instrument automatically runs through all the six standard tests whilst the operator only has to stand by the RCD and reset it every time it trips. All the result can be viewed using the recall button.

The ramp test slowly increases the tripping current until the RCD trips. The display is in mA. It will show up RCDs that are out of specification and those that will be susceptible to nuisance tripping. It can also be used to indicate which circuits have high leakage currents.

The Kewtech KTD50 also measures main voltage and incorporates a full socket trester that checks for any mis-wiring at the socket.


Comprehensive RCD tester.
Includes RCD ramp and auto-test.
Full socket tester functionality built in.
Unique mains supply polarity test (checks that line and neutral are not switched at the supply).
Measures mains voltage.
Special x 2 I ∆N RCD function.
Tests selective RCDs.

Kewtech KTD50 Specifications
Breaker Type AC and ACS
Breaker Test Current 30 mA Breakers: x 1/2, x 1, x 2 and x 5 test currents
100mA, 300mA and 500mA breakers: x 1/2 and x 1 test currents
Safety Compliance EN61557 Parts 1 and 6 (performance)
EN61010 (safety)
EN61326 (EMC)
RCD Test Range (to EN61557-6)
Supply Voltage 195 V - 253 V AC 50Hz
Test Current Accuracy (1/2 I) -0% to -10%
(I, 5I) +0% to +10%
Trip Time Accuracy Up to 1 second: ±(1% + 1ms)
Over 1 second: ±(1% + 10ms)
Voltage Measurement
Range 5 V to 440 V.
Accuracy ±(2% + 1 V).
Working Frequency 50 Hz ±0.5%.
Socket Test
Detects Opens, shorts, wrong wiring, phantom conditions, phase reversal, out-of-limits voltage.
Fault Touch Voltage
Test Terminated If >25 V.
Power Type 4 x AA alkaline batteries recommended (not included).
Battery Life 10000 tests.
Fitted Fuse 32 mm, 0.25 A (F) HBC.
Over Voltage Survives 440 V overvoltage test rated for 1minute.
Operating Temperature Range 0 to 40°C.
Storage Temperature Range -10 to 60°C.
Operating Humidity 93% RH @ 40°C.
Dimensions 157 x 89 x 39 mm.
Weight 612g (boxed).
Kewtech KTD50 warranty Two-year.


Kewtech KTD50 Datasheet

PDF Specifications of the Kewtech KTD50 Digital RCD Tester.

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Kewtech KTD50 Digital RCD Tester
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