S0 frame, spring terminals, DC coil
The 3RT2024-2XJ40-0LA2: This is a Siemens SIRIUS contactor, frame size S0, with a DC-operated magnet coil terminated via spring-type terminals — no screw torque to verify, just strip and push.
DC switching capacity by voltage
Switching frequency maxes at 1000 operations per hour for AC-1, AC-2, AC-3, and AC-3e duty, but drops to 300 per hour for AC-4 (plugging/inching) — the arc energy in AC-4 heats the contacts faster, so the 300/h ceiling is the thermal limit, not the mechanical one. Coil pick-up and drop-out timing is 30 to 50 ms at DC — the drop-out delay matters if you're using the contactor in a safety circuit that expects a fast break; the arc time is a consistent 10 ms.