The Siemens 3RA2110-1GA15-1AK6 is a SIRIUS non-fused load feeder in the S00 form factor, configured as a direct starter. It ships as a pre-assembled unit with a 3RT2015-1AK61 contactor and a 3RA1921-1DA00 link module, so the BOM line covers the motor branch circuit in one order code — no separate contactor and overload relay to spec. Rated at 2.2 kW at 400 V AC-3, it also carries 3 kW at 500 V and 4 kW at 690 V, which means it handles standard IEC motor loads across the 400–690 V range without derating the branch. The CLASS 10 trip characteristic clears overloads fast enough to protect a motor winding during a locked-rotor event — that matters when the motor is driving a critical pump or conveyor that sees frequent starts.
The S00 footprint — 45 mm wide, 167.2 mm tall, 97.1 mm deep — fits a standard 45 mm slot in a panel layout, so you can pack multiple feeders side by side at 9 mm spacing without a gap. Forwards and backwards clearance is zero; plan for 20 mm above and 10 mm below for wiring and heat dissipation. No forced cooling required at rated load within that ambient.
Lifecycle status is current — Siemens has not flagged this order code for phase-out or discontinuation. That means the 3RA2110-1GA15-1AK6 remains a standard catalog item, so a BOM freeze based on this part number is stable for the foreseeable future. No last-time-buy clock is running. The unit includes the contactor (3RT2015-1AK61) and link module (3RA1921-1DA00) as delivered parts. If you are stocking spares or replacing only the contactor in a failed feeder, the replacement contactor order code is the same 3RT2015-1AK61. The link module is not sold separately in this assembly — the whole feeder is the replaceable unit.