Metrel 2121

Quick and Simple Testing of RCDs (10, 30, 100, 300, 500 mA) Both Standard and Selective Types
Test Current Multipliers of 0.5, 1, and 5 for Testing Trip Time of Current Limit Values
Selectable Phase Angle
High Resolution Ramp Test for Measurement of Trip Current
Measures Trip Time At Nominal Differential Current
Contact Voltage Measurement to Ensure Proper Connection of PE Conductors
Voltage Measurement Between Line, Neutral and PE Conductors
Measures Loop (Earth) Resistance Without RCD Trip