device: 7UT87 transformer protection multi- winding transformer housing type: flush mounting; BI : 39; BO: 49 (25ST + 24F + 0HS + 0P); I: 24 (protection); U: 16 ( 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, IO203, IO205, IO20 8, PS204; modules in 19" row 2: PS 203, IO208, IO211, PS204; LEDs/push-buttons: 16 LEDs; operation panel: integrated; key switch: without; display type: small display; front design: standard;