device: 7SA87 distance protection, 1-/ 3-pole housing type: flush mounting; BI : 79; BO: 52 (38ST + 14F + 0HS + 0P); I: 8 (protection); U: 8 ( 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 202, PS201, IO208, IO207, IO20 7, IO207; modules in 19" row 2: PS 203, IO207; LEDs/push-buttons: 8 push-buttons /LEDs(NE)+16 LEDs; operation panel: integrated; key switch: without; display type: large display;