Setting MicroLogic 2.0 A/E Trip Unit

You can set the tripping curve of your MicroLogic 2.0 A/E trip unit to match the needs of your installation using the following parameters:

1. Current setting Ir (long time)

2. Time delay tr (long time) for 6 x Ir

3. Pickup Isd (instantaneous)

Set the Threshold Values

In this example, the rated current In of the circuit breaker is 2000 A.

Ir = 0.7 x In = 1400 A Isd =3 x Ir = 4200 A

Set the Time Delay

In this example, time delay tr of the circuit breaker is 1 second.