The C103TM100C is a TM-D thermal-magnetic trip unit for the ComPacT NSX100...250 platform, rated 100 A at 50 °C. That 100 A is the continuous current the trip unit can carry without nuisance tripping at 50 °C ambient — derate it if your panel runs hotter. The 3-pole 3D configuration means it protects all three phases and disconnects all three poles; no neutral pole protection here. The magnetic instantaneous pickup is fixed at 800 A. The thermal long-time pickup is adjustable 0.7–1 x In.
Deployment context
This trip unit fits ComPacT NSX100, NSX160, or NSX250 fixed or plug-in breakers.
That covers everything from rated short-circuit capacity (Ics/Icu) to dielectric withstand and temperature rise. Class II electrical shock protection — double-insulated, no earth connection needed on the trip unit itself.