Siemens Offers Broad Product Portfolio for the Age of Direct Current Technology

[Ahmet Ö.]

Siemens Smart Infrastructure has introduced a new and comprehensive portfolio of protection and switching solutions for the direct current (DC) technology era. These innovative products significantly reduce material requirements such as cabling and busbars while increasing energy efficiency.

### The Importance of Direct Current Technology

Direct current systems are used effectively, especially in renewable energy sources and battery storage systems. The transition from AC systems to DC technology minimizes energy conversion losses, providing more sustainable and efficient energy management. Siemens plays a pioneering role in this transformation with initiatives such as the Open Direct Current Alliance (ODCA) and Current/OS.

### Siemens Direct Current Portfolio and Innovations

One of the most important parts of the new portfolio, the SENTRON 3QD2 semiconductor circuit breaker, maximizes safety in DC grids by clearing short circuits 1000 times faster, in microseconds. This device combines protection, switching, monitoring, and energy management in a single compact unit, offering long life and high plant availability without maintenance.

The SIRIUS 3RF5 solid-state switching device, designed for DC applications, provides a robust and wear-free solution for high-frequency resistive load switching. Sustainable design is also highlighted with the Siemens EcoTech Label.

### Technical Specifications

• SENTRON 3QD2: Semiconductor technology, ultra-fast short-circuit clearing in microseconds
• SIRIUS 3RF5: High-frequency resistive load switching for DC
• Integrated power distribution systems: SIVACON S8 low-voltage switchgear and SIVACON 8PS busbar trunking
• Maintenance-free design with no mechanical parts
• Sustainable products compliant with Siemens EcoTech Label standards

### Efficiency and Savings

Direct current systems, combined with energy recovery and storage in robotic applications, can reduce peak power consumption by up to 80%. Additionally, they provide cost and material savings as they do not require reactive power compensation and can reduce the amount of copper used in cabling by 50%.

Siemens will present its new portfolio at Hannover Messe 2026 and continue to contribute to the energy transition with groundbreaking solutions in direct current technologies.