Switching & steering

Controlled switching of high DC voltages

The Celduc SDI series is an advanced solid-state relay based on IGBT technology, designed for reliable switching of DC voltages up to 100A at 750Vdc. The relays are ideal for applications such as railway systems and industrial heating elements, where precise control and high reliability are crucial.

The SDI series excels in safety, flexibility and performance. Versions are available for 50 A and 100 A, with a wide range of control voltages from 24-110 VDC.

The relays are designed for extreme industrial conditions and feature a range of integrated protections:

  • Diagnostic and status outputs for instant feedback and faster troubleshooting
  • Overvoltage and transient protection for longer service life
  • Overload, short-circuit and overheating protection for maximum safety
  • Continuous current monitoring (for 50 A version) for proactive fault detection

Compared to electromechanical relays, Celduc SDI relays offer advantages such as lower maintenance, better heat dissipation and higher system reliability.

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