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.
Lifecycle & availability
Schneider lists the C163TM125D as discontinued with no direct successor. For a BOM-fill or line-down need, sourcing now runs through surplus and broker channels; an RFQ is the fastest way to confirm available quantity and lead time. 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.