Schneider Electric C104TM025 trip unit TM25D for ComPacT NSX 100 circuit breakers. thermal magnetic. rating 25 A. 4 poles 4d. Official Schneider characteristics include Range: ComPacT; Range of product: ComPacT NSX100...250 ComPacT NSX100...250 DC; Product or component type: Trip unit; Trip unit name: TM-D; Trip unit technology: Thermal-magnetic; Range compatibility: ComPacT NSX100 ComPacT NSX100 DC; Device application: Distribution; Poles description: 4P.