The C125603TF is a Schneider Electric Acti9 MSC chassis — a three-phase distribution chassis rated 250 A with a 25 kA short-time withstand (Icw) for 0.1 s. It takes one 3-pole incomer and feeds up to 60 outgoer poles on 27 mm centers, sized for C120 MCBs. Feed is from the top only.
This part is listed as obsolete by Schneider Electric. No direct successor order code is provided in the official record.
The chassis measures 812 mm long by 215 mm wide — a full-height panelboard footprint. The 60-pole outgoer section accepts 27 mm wide C120 MCBs; the 3-pole incomer occupies the top feed position. Panel builders should verify the existing enclosure depth and busbar alignment before specifying, as the top-feed-only constraint may require rework of an existing bottom-feed layout.