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Megger RCDT310 RCD Tester

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£314.40 £262.00
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Suitable for use with 30, 100, 300 and 500mA RCDs and selective/DC breakers, Megger's RCDT310 provides the user with the ability to test RCDs for correct implementation.

Although the entry-level product in the RCDT300 series, the RCDT310 is highly accurate, easy to use and can perform1/2I, I and 5I testing procedures. It'll also display touch voltage at the start of the test and RCD polarity can also be tested at 0 or 180°.

This unit is designed with safety in mind; the user can set a voltage inhibit which will prevent testing if a large voltage is detected, it is safe for use on 3 phase systems and even comes built inside its own IP54 weatherproof case for extra protection in demanding conditions.

Megger RCDT310 RCD Tester Key Features

  • 1/2 I, I and 5I RCD trip time test
  • Selective breaker function
  • Suitable for use with DC breakers
  • Compatible with 30, 100, 300 and 500mA RCDs
  • 0 and 180° polarity selection
  • Touch voltage display inhibit (selectable)
  • 3 phase safe
  • Large-size clear display
  • Battery status indication
  • Fuse blown indicator
  • IP54 weatherproofing
  • IEC61010-1 CAT III 300V rated

What's Included?

  • Megger RCDT310 RCD Tester
  • Mains Plug Test Lead
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Part CodeRCDT310-EN-BS

Megger RCDT300 Series Technical Specifications

RCD Test Ranges (to EN61557-6)  
Supply Voltage RCDT310: 100V to 280V (45Hz to 65Hz)
RCDT320: 50V to 280V (45Hz to 65Hz)
RCDT330: 50V to 280V (45Hz to 65Hz)
Minimum voltage 71V for 300mA RCDs, 100V for 500mA RCDs and 205V for 1000mA RCDs
Test Current Accuracy  
No Trip Test (1/2I): -8 to -2%
Trip Test (I, 5I): +2% to +8%
Trip Time ±1% ± 1ms
Voltage Measurement  
AC Range 0 to 300V (25 to 450Hz)
Accuracy ±2% ± 2 digits
Frequency Measurements (RCDT320/330 Only)  
Range 25 to 450Hz
Accuracy 25 to 199.9Hz ± 0.1Hz
200Hz to 450Hz ± 1Hz
Fault (Touch) Voltage  
Displayed Range 0 to 50V
Error +5%/+15% ± 0.5V
Programmable RCD Step Increments  
10mA to 50mA 1mA steps
50mA to 500mA 5mA steps
500mA to 1000mA 10mA 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 300V phase to earth
Power Supply  
Batteries 8 x 1.5V cells IEC LR6 type (AA alkaline)
Rechargeable 8 x 1.2V NiCd or NiMH cells
Battery Life 2000 consecutive tests
General Specs  
Weight 980g
Dimensions 203 x 148 x 78mm
E.M.C In accordance with IEC61326-1
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