Pre-assembled TeSys D star-delta starter for motor applications up to 25 kW at 400 V. Rail-mounted starter, open version, consisting of 3 contactors with 230 V 50/60 Hz AC coils, 1 built-in auxiliary contact for star connection, 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 start time is 30 seconds. Protection is strongly recommended when a thermal overload relay is added (to be ordered separately).