device: 7SS85 busbar protection 2 zones, 4 fields included housing type: flush mounting; BI: 51; BO: 37 (11ST + 22F + 0HS + 4P); I: 20 (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, IO201, IO201, IO20 4, IO204; modules in 19" row 2: PS 203, IO201; LEDs/push-buttons: 16 LEDs; operation panel: integrated; key switch: without; display type: small display; front design: standard;