The Siemens 3RA2115-0AD15-1AK6 is a SIRIUS non-fused motor starter in size S00, configured as a direct starter — meaning it combines a contactor, a thermal bimetallic overload relay, and a magnetic short-circuit trip into one assembly that snaps onto a 60 mm busbar system. It ships with a 3RT2015-1AK61 contactor, a 3RV2011-0AA15 circuit breaker, a 3RA1921-1DA00 link module, and a 8US1251-5DS10 busbar adapter — everything needed to drop into a panel and wire up. Rated for 690 V at AC-3 and 50/60 Hz, with Trip Class 10 protection, this starter is sized for motor loads that need a compact, fuseless feeder in a vertical mounting position.
The 690 V AC-3 rating covers 400 V and 480 V systems with headroom; the magnetic short-circuit trip clears faults before the contactor welds, and Type of Assignment 2 means the starter coordinates with the upstream breaker for minimal damage under short circuit.
Snaps directly onto a 60 mm busbar system — no DIN rail required — saving panel space and reducing wiring. The 45 mm width and 200 mm height fit size S00 footprints common in Siemens SIRIUS panels. Main contact wiring accepts 0.5 to 4 mm² stranded, or 2× (0.75 to 2.5 mm²) for paralleled feeds. Clearance distances: 20 mm upwards, 10 mm downwards, 9 mm at the side — plan your enclosure layout accordingly to avoid derating.