Two RCD testers that comply with EN61557 for testing, measuring or monitoring of protective measures.The RCDT300 series can perform 1/2I, 1xI and 5xI tests on RCDs. rated at 10 -1000mA on general and selective (time delayed) RCDs. Tests standard, DC, selective, and programmable RCDs. Ramp testing. Auto (Remote) testing. 3 Phase safe. Enables testing on 110 V centre tapped supplies. Tough rubber armoured case with built-in cover. Weatherproof to IP54. USB interface for downloading test result. Tough: Designed to take the bashing that testers receive on site, the Megger RCDT testers are rubber armoured. The rigid display cover folds right out of the way during testing and locks down to protect the display when it is finished.Simple to use: No buried functions mean it is obvious how to use the Megger RCDT. Colour coded ranges help test range selection, reducing test times and fault location. A user guide in the lid provides all the basic information. Hangs comfortably around the neck for hands-free use because the instrument is carefully balanced.