device: 7SS85 busbar protection 6 zones, 6 fields included housing type: surface mounting; BI: 19; BO: 26 (6ST + 20F + 0HS + 0P); I: 28 (protection); U: 4 (standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 0 (20 m A, normal); housing width: 1 x 19''; modules in 19" row 1: IO 203, PS201, IO203, IO203, IO20 8, PS204; modules in 19" row 2: ; LEDs/push-buttons: 32 LEDs; operation panel: integrated; key switch: with; display type: large display; front design: standard; auxiliary voltage: 60 V - 250 V DC, 100 V - 230 V AC;