The AC-3 rating tells you the real motor-switching capability: 30 kW at 500 V, 50/60 Hz. AC-3 means starting a squirrel-cage motor and disconnecting it while running — the standard duty for a general-purpose motor contactor. The 800 operations-per-hour maximum at AC-3 matches continuous conveyor or pump cycling. At AC-4 (plugging or inching) the rating drops to 300 ops/h, which reflects the higher arc energy from reversing or jogging the motor. The auxiliary contact ratings cover the control circuit: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V. The coil operating range is 0.8 to 1.1 times rated voltage at 50 Hz, and 0.85 to 1.1 at 60 Hz — so a 24 V coil holds in from about 19.2 V to 26.4 V.
The 3RT1036-1AG24 is 55 mm wide, 112 mm high, and 164 mm deep — the standard S2 footprint. The IP20 front enclosure keeps fingers out during panel access; the terminal area is IP00, meaning the wiring zone is open to the panel environment — standard for enclosed industrial switchgear.