The Siemens 3RA1110-1DD15-1AF0 is a SIRIUS non-fused load feeder configured as a direct starter in size S00. It is designed to snap onto 60 mm busbar systems, making it a compact, pre-assembled motor-starting solution for distribution panels where space is tight and panel builders need a clean, repeatable install. Rated at 1.1 kW at 400 V, this feeder is sized for small three-phase induction motors — think pumps, fans, and small conveyors in a control cabinet. The IP20 front protection keeps fingers out during operation, consistent with enclosed panel use.
What's Inside the Package
This order code ships as a matched set: a 3RT1015-1AF01 contactor, a 3RV1011-1DA10 circuit-breaker for short-circuit protection, a 3RA1911-1AA00 link module, and a 8US1251-5DM07 busbar adapter. The bimetal overload relay provides motor protection. That means one order code, one BOM line, and no separate sourcing of the contactor, breaker, and adapter. The feeder accepts solid or stranded conductors from 0.5 to 4 mm² on the main contacts, with dual terminals accepting 2x (0.75 to 2.5 mm²). AWG equivalents are 2x (18 to 14). This covers standard motor and control wiring in most industrial panels.
The feeder snaps directly onto a 60 mm busbar system — no DIN rail required. The busbar center-to-center spacing is 60 mm. For clearance planning: allow 20 mm upwards, 10 mm forwards, 9 mm backwards, and 20 mm at the side. No clearance needed downwards. The unit itself is 45 mm wide, 203 mm high, and 128 mm deep. Shock resistance is rated at 9.8g.