device: 7UT87 transformer protection multi- winding transformer housing type: flush mounting; BI : 191; BO: 51 (35ST + 16F + 0H S + 0P); I: 12 (protection) + 4 ( sensitive); U: 8 (standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 0 (20 m A, normal); housing width: 1 x 19'' + 2/3 x 19''; modules in 19" row 1: IO 203, PS201, IO202, IO202, IO20 5, IO205; modules in 19" row 2: PS 203, IO230, IO230, IO230; LEDs/push-buttons: 16 LEDs; operation panel: integrated; key switch: without; display type: large display; front design: standard;