The Siemens 3RT1055-6A power contactor from the SIRIUS 3RT1 series is a robust and high-performance switching device designed for industrial motor control and power distribution systems. Engineered for durability and efficiency, it is ideal for handling medium to heavy electrical loads in demanding environments.
With an AC-3 rating of 150A, this contactor is suitable for controlling motors up to approximately 75 kW at 400V, making it widely used in applications such as pumps, compressors, conveyors, and industrial machinery.
The contactor features a 110–127V AC control coil, ensuring stable and efficient switching in standard control circuits. It is designed as a 3-pole contactor and typically includes 2NO + 2NC auxiliary contacts, allowing flexible integration into control, interlocking, and signaling systems.
Built with Siemens’ proven SIRIUS technology, the device offers high electrical endurance and long mechanical life, ensuring reliable operation even under frequent switching conditions. The Size S6 frame and screw terminal connections allow easy installation in industrial panels.
Its compact yet rugged design makes it a preferred choice across industries such as manufacturing, automation, HVAC, and power distribution systems.
