Siemens SIRIUS 3RT Contactors

Reliable Switching and Protecting of High Currents

Siemens SIRIUS 3RT contactors up to 2650 A for wind turbine systems and converter applications. Thanks to the SIRIUS 3RT contactors extreme ruggedness and outstanding contact reliability, Siemens' contactors switch supremely and reliably. In addition, they enable compact control cabinets with high packing density. With integrated ranges of accessories for sizes S00 to S3 as well as S6 to S12, individual function expansions can be implemented with no great effort. In sizes S00 to S3, the contactors even have the auxiliary switches integrated into the enclosure.

Benefits

• Highest Switching Capacity - Can switch up to 2650 A with out current derating up to an ambient temperature of 55°C

• Certified worldwide - Comply with all important standards and certificates

• Lower number of variants required - Only 6 variants are required to cover the current range from 900 A to 2650 A

• Technical documentation can be easily accessed through an App - Fast access to current product information and technical data of the Industry Online Support

The SIRIUS modular system with its protection and switching devices has been a well-proven component in equipment used in wind turbine systems or other converter applications for open-loop and closed-loop control tasks. Siemens has expanded their SIRIUS portfolio, and now offer contactors to the highest power range.

With a power range up to 2650 A, in conjunction with SENTRON circuit breakers, the new SIRIUS contactors can be used in the generator circuits of wind turbine systems, for example in systems with doubly-fed induction generators (DFIG).

Their rated technical data means that these switchgear assemblies can be used under demanding ambient conditions, for example at high temperatures. A high tested short-circuit strength allows these devices to be used in generator-related applications.

When compared to circuit breakers, 3RT148 contactors have a remarkable switching frequency despite their high rated currents. This makes them the optimum choice for the control-related switching in and switching out of the power generated in wind turbine systems - but also for an other switching tasks. This means that they are optimally equipped for the control-related switching in and switching out of the power generated in wind turbine systems.

In addition to wind turbine system applications, the new contactors are the ideal partner when it comes to disconnecting converters from the grid.

Power-Flo Technologies is proud to partner with Siemens and their SIRIUS 3RT contactors that offer a powerful, reliable, and compact solution for high-current switching and protection. They are particularly suited for wind turbine systems and converter applications. With their exceptional switching capacity, global certifications, and modular design, these contactors not only ensure dependable performance in harsh environments but also simplify integration and reduce system complexity. Whether managing generator circuits or disconnecting converters, the SIRIUS 3RT line delivers the robust, efficient switching performance demanded by today’s high-power industrial applications.