Earth-Leakage Protection on MicroLogic 7.0 P Trip Unit

The earth-leakage protection function primarily helps to protect people against indirect contact because an earth-leakage current can provoke an increase in the potential of the exposed conductive parts.

The earth-leakage pick-up value IΔn is displayed directly in amperes and the time delay follows a constant-time curve.

An external rectangular sensor is required for this function.

This function is inoperative if the long-time rating plug is not installed.

As a type-AC, the circuit breaker is protected against nuisance tripping.

As a type-A, the circuit breaker provides DC-component withstand up to 10 A.

If the optional external voltage-measurement input is used, a 24 Vdc external power supply must be connected to the F1-/ F2+ terminals, see Power Supply

For the factory settings, the setting ranges, increment steps and setting accuracies, see Threshold and Time-Delay Settings.