Active production — what that means for your BOM line
The 3RA2125-1AA23-0AK6: It is part of the SIRIUS product brand family, the non-fused motor starter 3RA2 series, sized S0.
Thermal overload and trip class — the protection profile
The overload release is thermal bimetallic, Trip Class 10. For longer ramp times (centrifuges, high-inertia loads) you would step to Class 20 or 30; this part is not that. Rated voltage is 690 V AC, covering 400 V, 480 V, 600 V, and 690 V line supplies. Power ratings vary by voltage: 550 W at 400 V, 1.1 kW at 690 V, 0.75 hp at 460/480 V and 575/600 V. The 50/60 Hz operating frequency means it works on either mains standard without derating.
What ships in the box — contactor and link module included
This is a pre-assembled direct starter: it ships with the 3RT2023-1AK60 contactor and the 3RA2921-1AA00 link module already integrated. No separate ordering of contactor + overload — it arrives as one unit, wired internally for the direct-on-line start function. The mounting position is vertical only — horizontal mounting would change the thermal trip characteristic. Ambient operating range is -20 to +60 °C, storage -50 to +80 °C.
Sourcing — quoted to order, no stock-holding claim
This is an active Siemens catalog part. We source it through authorized distribution channels against your BOM quantity.