ComPact NSX100-250 - Distribution Protection Tripping Curves

TMD Magnetic Trip Units

For all TMD curves:

Values are given for 40 °C ambient, Ir = 1 x In, 3 poles loaded, cold start.

For Ir = k x In, read the time corresponding to 1/k times given current.

For 1 pole tripping, read the time corresponding to 0.85 times given current.

For hot start (0.9 x Ir), divide max. time by 2, min. time by 4.

TMG Magnetic Trip Units

MicroLogic 2.2 and 4.2 Electronic Trip Units