SIRIUS 3RT7046-1AN20 — 3-Pole Contactor, S3 Frame, 690 V AC-3
The Siemens 3RT7046-1AN20 is a size S3 3-pole contactor from the SIRIUS family, rated for AC-3 switching up to 690 V. It carries 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — so the load current drops as line voltage rises, which is typical for motor-switching duty where the AC-3 rating governs the real motor FLA it can handle.
Switching Performance and Coil
Rated for 800 operations per hour at AC-3 maximum and 250 per hour at AC-4 maximum — AC-4 is the harder duty (plugging/inching), so the lower limit reflects the increased contact wear. The DC coil draws 0.7 W to close and only 0.29 W to hold, which keeps the control transformer small and the heat dissipation low in a sealed panel.
Protection Coordination
That's a large fuse for a contactor this size — it means the short-circuit withstand is high, so you can feed it from a substantial bus without needing a smaller fuse just to protect the contactor.