Duty cycle and switching frequency
The 3RT2016-4AP62: Maximum switching rates: 1,000 cycles/hour in AC-1 (resistive load), 750 cycles/hour in AC-3 (motor starting), and 250 cycles/hour in AC-4 (plugging/inching) — the AC-4 ceiling is the one that governs high-duty applications like reversing or jogging. Arcing time spans 10 to 15 ms at AC, which sets the minimum off-time between switching operations to avoid contact welding.
Auxiliary contact ratings for control circuits
The magnet coil connection uses ring cable lugs — plan the control wiring with ring terminals rather than fork or pin types.
Thermal environment and storage
Coil rated for 50 Hz at 220 V and 60 Hz at 240 V — the 0.24 A holding current at both frequencies means the control transformer sizing is the same regardless of line frequency.