Overview
The C163TM125D is a Schneider ComPacT NSX160 DC thermal-magnetic trip unit rated 125 A at 40 °C, 3-pole, for 750 V DC networks. It provides LI protection (overload and short-circuit) via a fixed TM-D trip unit and mounts in the ComPacT NSX160 DC frame. Schneider discontinued this part as of December 2024.
Schneider lists the C163TM125D as discontinued with no direct successor. The closest same-series peer still in distribution is the C163TM160D, which shares the same 3-pole, 750 V DC, ComPacT NSX160 DC frame but steps up to 160 A at 40 °C — a meaningful delta when the design requires higher current capacity.