device: 7UT87 transformer protection multi- winding transformer with standard variant housing type: flush mounting; BI: 27; BO: 38 (22ST + 16F + 0HS + 0P); I: 20 (protection); U: 4 (standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 0 (20 m A, normal); housing width: 5/6 x 19''; modules in 19" row 1: IO 203, PS201, IO208, IO203, IO20 5; modules in 19" row 2: ; LEDs/push-buttons: 32 LEDs; operation panel: integrated; key switch: without; display type: large display; front design: standard; auxiliary voltage: 60 V-250 V DC, 100 V-230 V AC;