Reversing starter in S0 frame — what's inside the package
The 3RA2220-1DD23-0BB4 is a Siemens SIRIUS non-fused reversing motor starter, size S0, built as a pre-assembled unit combining a 3RT2023-1BB40 contactor, a thermal bimetallic overload relay, and a link module 3RA2921-1BA00 on a common busbar adapter 8US1251-5NT10. It snaps onto 60 mm busbar systems in vertical mounting position, occupying 90 mm width, 260 mm height, and 165 mm depth — the clearance envelope requires 30 mm upwards, 10 mm forwards, 10 mm downwards, and 9 mm at the sides, with zero backwards clearance needed.
Motor ratings and trip coordination
Rated 1100 W at 400 V (AC-3) and 2.8 A at 480 V, with a maximum AC-3 switching voltage of 690 V — this covers standard 400 V and 480 V motor feeds across European and North American line voltages. The 24 VDC coil (rated value) keeps control voltage low for safety circuits and PLC-driven panels — common in modern machine builds where 24 VDC is the standard control bus.
Environmental limits and installation constraints
Operates from -20 to +60 °C ambient, stores from -50 to +80 °C, and survives transport down to -55 °C — the wide storage range matters for spares held in unheated warehouses or site containers. Degree of pollution 3 means it tolerates conductive dust and occasional condensation — suitable for industrial enclosures without climate control, but not for direct outdoor exposure without a sealed cabinet. Main contact wiring accepts 1 to 10 mm² stranded, or 2 × (2.5 to 6 mm²) — the dual-wire entry simplifies daisy-chaining power feeds in multi-starter panels.
Sourcing and lifecycle — current production, quoted to order
No official successor or direct cross-reference to the listed peer MPNs (6ES7517-3FP00-0AB0, 6ES7214-1BG40-0XB0, 6AG1215-1BG40-5XB0) — those are Siemens PLC modules, not motor starters, so a panel specified around them will not accept this reversing starter without a separate motor feeder circuit.