SIRIUS reversing starter, S0 frame, CLASS 10
The Siemens 3RA2220-1JF24-0AP0 is a SIRIUS reversing starter in the S0 size, combining two contactors and a link module into a single unit for forward/reverse motor control. Rated for CLASS 10 trip protection, it clears overloads within 10 seconds at 600% of the set current — the standard for starting high-inertia loads like conveyors and pumps without nuisance tripping during acceleration. Maximum operating voltage is 690 V, covering 400 V and 480 V line supplies common in industrial panels.
What ships in the carton — no holes in the kit
The reversing starter ships as a factory-assembled unit with the supplied 3RT2024-2AP00 contactor and 3RA2921-2AA00 link module already integrated — no separate ordering of interlock hardware or bus bars. Main circuit connections use spring-loaded terminals, so the tech lands the wires without a screwdriver — torque-sensitive terminations are eliminated.
Panel layout dimensions and clearances
The starter measures 130 mm deep, 90 mm wide, and 269 mm tall — the S0 frame footprint fits standard 200 mm deep enclosures with room for wiring ducts. Required clearances: 50 mm upwards, 32 mm forwards, 10 mm downwards, 10 mm at the side, and 0 mm backwards — the rear face can sit flush against the back panel.
Sourced through authorized distribution channels; quantities are quoted against the BOM with lead time and volume pricing confirmed at RFQ.