Pre-assembled TeSys D star-delta starter for motor applications up to 18.5 kW at 400 V. Starter for panel mounting, open version, consisting of three contactors with 230 V 50/60 Hz AC coils, one built-in auxiliary contact at the star, and a time-delayed auxiliary switch block. Equipped with pre-wired star-delta power connections and mechanical interlocking. The maximum operating rate is 30 starts per hour and the maximum starting time is 30 seconds. Protection is strongly recommended when a thermal overload relay is added (to be ordered separately).