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Megger RCDT310 RCD Tester
  • Megger RCDT310 RCD Tester
  • Megger RCDT310 RCD Tester

Megger RCDT310 RCD Tester

Megger approved distributor and service centre.

Includes: RDT310 RCD tester in case, Mains plug test lead, calibration cert and instructions.

£352.00 Save 20%
Tax excluded
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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.

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.


Tests standard, DC and selective RCDs.
Ramp testing.
Auto (Remote) testing.
3 Phase safe.
Enables testing on 110 V centre tapped supplies.
Weatherproof to IP54.

Megger RCDT310 Specifications
RCD Test Ranges (to EN61557-6)
Supply Voltage RCDT310: 100 V to 280 V (45 Hz to 65 Hz)
RCDT320: 50 V to 280 V (45 Hz to 65 Hz)
RCDT330: 50 V to 280 V (45 Hz to 65 Hz)
Minimum voltage 71 V for 300 mA RCDs, 100 V for 500 mA RCDs and 205 V for 1000 mA RCDs.
Test Current Accuracy
No Trip Test (1/2I): -8 to -2%.
Trip Test (I, 5I): +2% to +8%.
Trip Time ±1% ± 1 ms.
Voltage Measurement
AC Range 0 to 300 V (25 to 450 Hz).
Accuracy ±2% ± 2 digits.
Frequency Measurements (RCDT320/330 Only)
Range 25 to 450 Hz.
Accuracy 25 to 199.9 Hz ± 0.1 Hz
200 Hz to 450 Hz ± 1 Hz.
Fault (Touch) Voltage
Displayed Range 0 to 50 V.
Error +5%/+15% ± 0.5 V.
Programmable RCD Step Increments
10 mA to 50 mA 1 mA steps.
50 mA to 500 mA 5 mA steps.
500 mA to 1000 mA 10 mA steps.
Test Result Storage (1000 Results) - RCDT330 Only
Job Number 256 locations.
Distribution Board Number 99 locations.
Circuits 99 locations.
Phases P1, P2, P3.
Temperature and Humidity
Operating Range -5 to 40°C.
Operating Humidity 93% RH at +40°C max.
Storage Range -25 to 70°C.
Maximum Altitude 2000m.
Environmental Protection IP54.
Rating IEC 61010-1 CAT III 300 V phase to earth.
Power Supply
Batteries 8 x 1.5 V cells IEC LR6 type (AA alkaline).
Rechargeable 8 x 1.2 V NiCd or NiMH cells.
Battery Life 2000 consecutive tests.
General Specs
Weight 980g.
Dimensions 203 x 148 x 78 mm.
E.M.C In accordance with IEC61326-1.
Megger RCDT310 warranty Three-years.


Megger RCDT300 Datasheet

PDF Specifications of the Megger RCDT310, RCDT320 & RCDT330 Residual Current Testers.

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Megger RCDT310 RCD Tester
Lead Set 2-wire test lead with prods and clips. 1003-132B
Mains Plug UK Mains Plug test leadset, 3-pin 1 wire (BS1363 plug). 6231-601
Case Blow Moulded Case. MIT/LTW/RCDT. 1007-167

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