Switching duty and operating limits
The 3RT2017-2AP04-3MA0: This contactor carries no built-in auxiliary switch — the buyer must add a separate auxiliary contact block if feedback or status signaling is needed in the control circuit. Arcing time spans 4 to 15 ms, with a typical range of 10 to 15 ms — this matters for coordination with upstream protective devices, especially in multi-contactor motor starter groups.
Mechanical life is typical 10,000,000 operations — this is the wear-out floor for the contactor mechanism, not the electrical endurance under load, which will be lower depending on switching duty.