The Relay that provides a comprehensive range of functions in an amazingly compact and space-saving housing.
Advanced OC&EF Self-Powered Relay SIA-B is the most reliable dual powered (Self-Powered + Universal Vaux) relay offering a high performance previously available only in relays with Vaux.
Line protection relay that provides advanced communications and more protection functions such as auto-recloser.
Moreover, the ability of being able to choose between standard /1 or /5 CTs easily by software combined with more sensitive measurements provides you the flexibility and reliability you need for a complete line protection.
The revolutionary solution for the protection of RMU (Main Ring Unit) with 3rd generation protection relays.
Counting with an extensive experience of successfully operating devices in the field worldwide and thanks to the unique advantages, SIA-C enjoys top recognition among users all around the planet.