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Kewtech KTD50 Digital RCD tester

Model: KTD50

Condition: Used

In stock: 28

SKU: 5788 3C04

Sale price£42.50
  • Electronic T&M
  • Handheld
  • Multifunction & Appliance Testers
Product Overview


Note we have multiple untis so cosmetically they may differ a little. Batteries or leads are NOT included.

KTD50 Digital RCD Tester with Auto-Test 

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

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 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 x 2 I ∆N test satisfies the advisory note for verification of disconnection times as in teh 17th Edition regulation 411.3.2.2 The Kewtech KTD50 also measures main voltage an incorporates a full socket trester that checks for 18 socket wiring conditions.Last but note least this tester has the unique feature of a mains polarity test. It will check tghat the mains incoming supply is not in the very hazardous condition of line/ phase reversal.

Shipping & Returns

Shipping & Returns Policy

Shipping Policy

  • Processing Time: Orders are typically processed and dispatched within 1 business day.
  • Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
  • Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
  • Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
  • CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
  • Shipping Destinations: We ship worldwide.
  • Tracking: Once your order is shipped, we will provide you with a tracking number via email.
  • Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

  • Return Period: In the event of an item being recieved which is 'not as specified', you can return your purchase within 14 days of delivery.
  • Condition of Items: Items must be returned unused and in their original packaging.
  • Return Method: All returns must be notified in writing to, the email should accompany the order number, date and reason for return and must be within 14 days of delivery.
  • Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than 'not as specified'.
  • Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
  • Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
  • Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is 'not as specified', in this case we will arrange for the return by way of a prepaid shipping label.


Products listed in this category consist of devices which are either untested or have been identified as faulty and therefore being sold for parts or repairs. You may use these as donor units or even attempt a repair. Due to the sheer volume of stock, some items may be left untested. The description will usually state whether the item is simply untested or if it is faulty.

All products sold under clearance are strictly sold ‘as seen’, returns are not accepted on such items.