The Siemens 3RA1110-1DA15-1AK6 is a nonreversing combination starter in the SIRIUS S00 frame size, rated for 2.2-3.2 A with a 208 VAC control voltage. It integrates a contactor, overload relay, and short-circuit protection into one DIN-rail or panel-mount unit, so it feeds a single motor branch directly without separate component wiring. The S00 frame keeps the footprint compact for high-density panels.
The 2.2-3.2 A current range sets the motor full-load current it can switch and protect. For a 208 VAC three-phase motor, that typically covers a 0.75 kW to 1.1 kW induction motor (roughly 1 to 1.5 HP). The 208 VAC control voltage is the coil rating — the starter's internal contactor pulls in at that voltage. If your control circuit is 24 VDC or 120 VAC, this variant will not pick up; you need a different control-voltage suffix.