Motor rating and trip class for reversing duty
The 3RA2220-4BD26-0AK6: The maximum operating voltage is 690 V AC-3, and the unit is designed for 50/60 Hz supply. Coil voltage range is 88–121 V at 50 Hz and 96–132 V at 60 Hz, covering common 110 V control circuits.
Integrated components and busbar mounting
The reversing starter ships as a pre-assembled unit: a 3RT2026-1AK60 contactor, a 3RV2021-4BA10 circuit-breaker with magnetic short-circuit trip, and a 3RA2921-1AA00 link module. The circuit-breaker provides the short-circuit protection (magnetic trip) while the thermal bimetallic overload relay handles overloads — both are integrated into the S0 feeder size.
Environmental limits and compliance
Operating temperature range is -20 to +60 °C; storage and transport range is -50 to +80 °C. The unit is rated for surge voltage withstand of 6 kV, and the main current circuit has 3 poles. The product extension auxiliary switch is available (not included as standard). Substance prohibited date is 05/01/2012 — the unit complies with RoHS and REACH requirements as of that date. Main circuit connections are screw-type terminals.