Siemens 3RT1024-1A Three-Phase Power Contactor

The Siemens Sirius 3RT1024-1A is a three-pole power contactor designed for AC-3 motor switching in 3‑phase circuits. It provides a 12 A main current rating and uses a 120 V AC control coil, enabling reliable control from common control supplies. In standard ratings, the device is specified for about 5.5 kW at 400 V (roughly 7.5 HP at 460 V) and supports AC-3 motor loads within those ranges for 50/60 Hz operation. This model is a Size S0 unit with screw terminals and upright mounting, simplifying panel installation and secure conductor termination. As part of the Sirius 3RT family, the 3RT1024-1A serves medium‑power motor starting and stopping duties for equipment such as conveyors, pumps, and fans in industrial settings.