The Siemens 3RA2110-1JD16-1AK6 is a SIRIUS non-fused load feeder — a pre-assembled direct starter combining a contactor, thermal overload relay, and busbar adapter in one size S00 package.
The 4 kW rating at 400 V AC-3 is the motor switching capacity — this feeder handles a standard 4-pole induction motor up to that shaft power. At 480 V it delivers 7.6 A; at 600 V, 9 A. Horsepower equivalents run from 2 hp at 200/208 V up to 7.5 hp at 575/600 V (–). Size S00 frame means this feeder occupies a 45 mm wide slot on the DIN rail or 60 mm busbar system. The supplied contactor is a 3RT2016-1AK61, the link module is 3RA1921-1DA00, and the busbar adapter is 8US1251-5DS10 — all pre-integrated. Depth is 155.1 mm, height 200 mm; the enclosure cutout needs 20 mm clearance above and 10 mm below, with 9 mm side clearance.
Mounting and environmental limits
Mounts vertically by snapping onto 60 mm busbar systems — the busbar adapter is included. Operating temperature range is -20 to +60 °C; storage and transport range is -50 to +80 °C. Pollution degree 3 means it tolerates conductive pollution in industrial control panels — no conformal coating required for normal environments.