The Siemens SIRIUS 3RT2046-1AB04 is a size S3 power contactor rated 96 A at 480 V — that 480 V rating is the AC-3 motor-switching current, meaning it handles a 3-phase motor load up to 96 A under typical starting and running conditions. The 20 hp rating at 230 V confirms its motor-duty capability for North American panels. AC-3e switching frequency maxes at 850 operations per hour, so it's sized for continuous cycling on conveyors or pumps without overheating the coil or main contacts.
The size S3 footprint is 70 mm wide, 140 mm tall, 195 mm deep — that depth is the body plus arc chamber, so allow 20 mm forward clearance for wiring and 10 mm on each side for air circulation. Main power wiring accepts solid conductors 2.5 to 16 mm² or stranded 6 to 70 mm² — the stranded range covers the heavy feeds for a 96 A motor circuit. The magnet coil uses screw-type terminals, so keep a screwdriver sized for M3.5 or M4 captive screws.