Megger RCDT310 RCD Tester



  • RCD testers for electricians:
  • Tests standard, DC and selective RCDs
  • Ramp testing
  • Auto (Remote) testing
More Information
Warranty 3 years
Price Match No

Megger RCDT310 RCD Tester

Even if they are inadvertently connected to a live three-phase supply, RCD testers in Megger's RCDT300 range remain undamaged, and present no safety hazard to the user.

Introduced after extensive customer research into the requirements of electrical contractors, these innovative instruments combine rugged construction with straightforward operation, and they are offered at very competitive prices.

Available in three models, ensuring that all users can choose a model which exactly meets their needs, Megger RCDT300 RCD testers feature a compact ergonomic design, making them easy to handle and use, and a tough impact-resistant body with a rubber overmoulding for additional protection, plus a built-in display cover.

All models in the range are water and dust resistant, with an IP54 ingress protection rating.

The low-cost entry-level RCDT310 model is suitable for use on supplies between 100V and 280V, and offers 0.5I, I and 5I tests, with provision for tests starting at 0ْ/180ْ of the supply waveform, as well as for DC tests. It also has facilities for testing standard and selective RCDs, and covers current ranges from 30mA to 500mA. When connected to a live supply, it defaults to voltmeter mode.

 Features RCDT310 RCDT320 RCDT330
RCD Testing      
1/2I, I, 5I RCD trip test time x x x
Selective breakers x x x
DC breakers (1/2 I, I, 5I) x x x
30, 100, 300, 500mA RCDs x x x
10mA / 1A RCDs   x x
RCD trip current test (RAMP)   x x
Auto sequence test   x x
0°/180° polarity selection x x x
Touch voltage display inhibit (selectable) x x x
Max Touch voltage (25V/50V) x x x
Operating range 100 to 280V x    
Operating range 50 to 280V   x x
Programmable RCDs     x
Frequency measurement   x x
3 Phase Safe x x x
Large clear display x x x
Backlight   x x
Battery status indication x x x
Auto power down x x x
Fuse blown indication x x x
IP54 weatherproof x x x
Result storage     x
Downloading     x
USB interface     x
IEC61010-1 CATIII 300V x x x
EN61557 x x x
Calibration Certificate x x x
3 year warranty x x x
Plug ended test lead x x x
2 wire ended test lead probe/croc clip ended   x x


The Megger RCDT310 complies fully with the requirements of IEC61010-1 for Category III 300V applications, and are supplied complete with appropriate test leads and a calibration certificate.

What's Included?

  • Megger RCDT310
  • Mains Test Lead
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