Ordering Information Model H 615 series relay (including case) Standard C IEC Main application F Feeder protection Functional application(1) C Standard configuration Analog inputs AC 4 I (I0 1/5 A) Binary inputs/outputs AB 4 BI + 6 BO Communication serial A RS485 Communication Ethernet N None Communication protocol(2) B Modbus Language 2 Front panel D Option 1 A Reclosing Option 2 N None Power supply 1 48...250 V DC, 100...240 V AC Vacant digit X Vacant Version D Version 1.1 The selected standard configuration defines the required and optional hardware. Select the correct digits from the standard configuration column A, B, C or D.The selected communication module (digit 9-10) specifies the available communication protocols. Select your protocol from the relevant column.