Siemens 3RT1046-1A...4 Contactor

Siemens SIRIUS 3RT1046-1A...4 is a three‑pole power contactor in the S3 size designed to switch three‑phase motors in industrial control systems. It delivers AC‑3 duty at up to 95 A (45 kW at 400 V) and can handle up to 120 A in AC‑1 service, making it suitable for motor starters and similar load switching. The unit features a three‑pole main circuit with screw‑terminal connections for robust, field‑installable wiring, and coil voltage variants exist—an example is the 3RT1046-1AF00 with a 110 V AC coil at 50 Hz; other suffixes such as 3RT1046-1AN24 indicate a 24 V AC coil option. This family supports reliable control of motors in applications like automation machines, HVAC equipment, conveyors, and pumps, offering compact, durable switching and compatible accessories within the Sirius line.