device: 7UT87 transformer protection multi- winding transformer housing type: flush mounting; BI : 111; BO: 29 (9ST + 20F + 0HS + 0P); I: 7 (protection) + 9 (sensitive ); U: 8 (standard); measuring transducer inputs: 0 (20 m A or 10 V, fast), 4 (20 m A, normal); housing width: 1 x 19''; modules in 19" row 1: IO 203, PS201, IO208, IO208, IO23 0, IO230; 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;