device: 7SS85 busbar protection 2 zones, 4 fields included, T rAbb housing type: flush mounting; BI: 57; BO: 62 (50ST + 12F + 0HS + 0P); I: 24 (protection); U: 0 ( standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 0 (20 m A, normal); housing width: 1 x 19'' + 1/3 x 19''; modules in 19" row 1: IO 203, PS201, IO203, IO203, IO20 5, IO206; modules in 19" row 2: PS 203, IO231; LEDs/push-buttons: 64 LEDs; operation panel: integrated; key switch: without; display type: large display;