What this motor starter delivers in the panel
The 3RA2115-1DA15-1BB4 is a SIRIUS non-fused direct starter combining a contactor and thermal-magnetic overload in one size S00 package — the same footprint as the individual 3RT2015 contactor plus the 3RA1921 link module, pre-assembled and tested as a single order code. The overload release is thermal bimetallic (Trip Class 10), meaning it allows standard motor inrush without nuisance tripping while protecting against sustained overloads — the magnetic short-circuit trip handles fault clearing independently.
Mounting position is vertical only; the specified clearances are 20 mm upwards, 10 mm downwards, 9 mm at the side, and 0 mm forwards or backwards — so the unit can be packed tight against the back panel but needs breathing space above and below for thermal dissipation.
Environmental and compliance scope
Operating temperature range is -20 to +60 °C, storage -50 to +80 °C, transport -55 to +80 °C — the wide storage range supports unheated warehouses and container shipping without special handling. Degree of pollution 3 means the device is rated for industrial environments with conductive pollution or dry non-conductive pollution that becomes conductive due to condensation — standard for an uncoated motor starter in a ventilated panel.