The 3RA2125-0JA23-0AK6 is a SIRIUS non-fused direct starter, size S0 load feeder, combining a contactor and thermal-magnetic overload in one package. The thermal bimetallic overload release (Trip Class 10) protects motors against sustained overloads, while the magnetic short-circuit trip handles fault currents — no external fuses needed for the motor branch. Rated motor power: 250 W at 400 V, 370 W at 500 V, 550 W at 690 V, and 0.5 hp at 575/600 V. The 45 mm width (size S0) fits standard 45 mm DIN-rail slots or screw-mount with the push-in lug; vertical mounting only. Coil voltage range is 88...121 V at 50 Hz and 96...132 V at 60 Hz — confirm the control supply matches before wiring. Main contact wire range: 1...10 mm² stranded, or 2x (2.5...6 mm²); AWG 2x (16...12) or 2x (14...8).
Supplied components — what's in the box
The starter ships with the contactor (3RT2023-1AK60), circuit-breaker (3RV2011-0JA15), and link module (3RA2921-1AA00) pre-assembled. The circuit-breaker size is S00; the auxiliary switch extension is available as an add-on.