The Siemens 3RA2115-1BA15-1EG6 is a SIRIUS direct on-line starter in Size S00, combining a supplied contactor (3RT2015-1EG61), a supplied circuit-breaker (3RV2011-1BA15), and a thermal bimetallic overload relay with magnetic short-circuit trip into one pre-assembled unit. Rated for motor loads up to 750 W at 400 V (AC-3), with a maximum operating voltage of 690 V, this starter is sized for small three-phase induction motors on conveyor, pump, or fan duty. Coil voltage is 100 V at 50 Hz and 100...110 V at 60 Hz, operating frequency 50...60 Hz, so it suits lines where control voltage is derived from a 110 V control transformer.
Dimensions: 45 mm wide, 167 mm tall, 155 mm deep. Clearance requirements: 50 mm upward, 20 mm forward, 10 mm downward, 20 mm at the side, 0 mm backward — useful for enclosure layout and derating calculations. Main current circuit connections are screw-type terminals, a familiar termination for panel builders and MRO technicians who prefer a positive clamp over spring cages on motor power wiring.