device: 7SL86 differential/distance protection , 3-pole dual-end fault protection, expandable housing type: flush mounting; BI: 25; BO: 37 (29ST + 8F + 0HS + 0P); I: 4 (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 208, PS201, IO205, IO206, CB20 2; modules in 19" row 2: ; LEDs/push-buttons: 16 LEDs; operation panel: integrated; key switch: without; display type: large display; front design: standard; auxiliary voltage: 60 V - 250 V DC,