63 A AC-3 at 400 V — the motor-switching rating
The 3RA6812-8AB: The maximum operating voltage of 690 V provides headroom for 400/480 V systems without derating.
Infeed-left design with 3 feeder slots
The 3RA6812-8AB is an infeed-left module for the SIRIUS compact load feeder system, providing three slots for plug-in feeder modules. Main circuit connection uses screw-type terminals accepting solid or stranded wire up to 2 x 25 mm², with a stripped length of 13 mm and tightening torque of 3 to 4.5 N·m.
Mounting and environmental fit
Dimensions are 180 mm wide, 197 mm high, 144 mm deep — the width accommodates the three feeder slots. Pollution degree 3 rating means it tolerates conductive dust and humidity typical of industrial control panels. Operating temperature range is -20 to +60 °C; storage and transport range is -55 to +80 °C.
Shock and vibration resistance
Qualified for semi-sinusoidal shock at 6 m/s² over 10 ms in all axes, and vibration resistance from 4 to 5.8 Hz at 15 mm amplitude, then 5.8 to 500 Hz at 2 m/s² over 10 cycles. This suits installations on machinery or conveyors subject to mechanical stress.