This contactor is rated for different utilization categories that govern real-world switching life. At AC-1 (resistive loads) it can manage up to 1,000 switching operations per hour. For AC-3 and AC-3e (standard motor starting) the maximum is 750 operations per hour, and for AC-4 (inching, plugging, reversing) it drops to 250 operations per hour. The arcing time sits between 10 and 15 ms, and the AC switching time is 4 to 15 ms — figures that matter when coordinating with upstream protection or PLC cycle times. The coil connection uses a ring cable lug, which is a secure termination method for industrial environments subject to vibration.
Environmental and Auxiliary Details
The unit includes an auxiliary switch (1 NO + 1 NC typically on the S00 frame), which is essential for feedback to a PLC or for electrical interlocking in reversing starter circuits. Rated operational currents are specified across multiple voltage levels for the auxiliary contacts: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, 0.14 A at 440 V, 4.8 A at 480 V, and 2 A at 500 V. These cover common control voltages from 24 VDC up to 500 VAC, though the 400 V AC-3 main contact rating is the headline number for motor switching. The coil is rated for 50 Hz at 220 V and 60 Hz at 240 V, with a hold-in power of 0.24 VA at both frequencies — low enough to keep heat rise minimal in a crowded panel.
For panel builders or MRO planners stocking spares, the SIRIUS S00 platform is widely used, and the 3RT2015-4AP61 is a direct drop-in replacement for earlier S00 contactors with the same coil voltage and auxiliary configuration. No rewiring or panel modification is required when swapping from a functionally equivalent S00 unit.