SIRIUS 3RA2 non-fused motor starter — what ships in the box
The 3RA2125-0JA23-0BB4: This is a Siemens SIRIUS 3RA2 non-fused direct starter — a pre-assembled combination of a 3RT2023-1BB40 contactor, a 3RV2011-0JA15 circuit-breaker, and a 3RA2921-1BA00 link module, all on a common S0 frame. The overload release is thermal bimetallic; the short-circuit trip is magnetic. At 575/600 V the rating is 0.5 hp. The maximum operating voltage in AC-3 duty is 690 V. The magnet coil is rated 24 VDC with a holding power of 5.9 W — the DC coil eliminates the hum and heat of an AC coil in continuous-duty applications.
Panel fit and clearance envelope
Dimensions are 45 mm wide, 107 mm deep, and 193.1 mm high. Mounting is vertical, snap-on to DIN rail or screw-mounted with an additional push-in lug. Clearance distances: 30 mm upwards, 10 mm forwards, 0 mm backwards, 10 mm downwards, and 9 mm at the side. The zero backwards clearance means the device can sit flush against a back panel or enclosure wall. Main contact wire range: stranded 1–10 mm² or 2×(2.5–6 mm²); AWG equivalents are 2×(16–12) or 2×(14–8). The circuit-breaker size is S00, while the load feeder is size S0. Operating temperature range is -20 to +60 °C; storage range is -50 to +80 °C; transport range is -55 to +80 °C. Pollution degree 3 (conductive pollution or dry non-conductive pollution that becomes conductive due to condensation).
Lifecycle and sourcing — active, quoted per BOM
Sourced through authorized distribution channels. The auxiliary switch extension option (Product Extension Auxiliary Switch = Yes) means the starter accepts a side-mounted auxiliary contact block without additional wiring — useful for status feedback to a PLC.