Schneider Electric C2547A250 Trip unit MicroLogic 7.2 E AL for ComPacT NSX 250 circuit breakers, electronic, rating 250A, 4 poles 4d. Official Schneider characteristics include Range: ComPacT; Range of product: ComPacT NSX100...250; Product or component type: Trip unit; Trip unit name: MicroLogic 7.2 E AL; Trip unit technology: Electronic; Range compatibility: ComPacT NSX250; Device application: Distribution; Poles description: 4P.