SIA-B Standard CT’s
Dual/Self Powered Protection Relay

Self-Powered + Universal Vaux relay offering a high performance previously available only in relays with Vaux.

Remote communications for SCADA (Modbus or DNP3.0 protocols), Up to 10 COMTRADE records, Advanced protection functions, Completely configurable I/O thanks to advanced logic.

SIL-A  Advanced Feeder Protection Relay

Advanced Feeder Protection Relay with reliable Overcurrent and earth fault protection for primary and secondary distribution, specially developed for compact MV switchgear.

The optimal design makes the useful life of the device longer and enhanced safety by reducing hazards. The perfect solution for renewable energy installations. Advanced Communications with multiple ports and protocols that allow seamless integration.


Overcurrent and Earth Fault Protection Relays with Self Powered or Dual Powered (self + auxiliary) models. The different mechanics available by model list make our SIA-C the best choice, covering all the market needs. Withdrawable model as optional.

With Remote communications RS485 Modbus RTU or IEC 60870-5-103, SIA-C enjoys top recognition among users worldwide. This relay is extremely experienced in successfully operating devices in the field.

Low voltage

All our Relays can be adapted to the technical specifications and requirements of customers, obtaining the best technical solution to meet their application and assembly needs.

Fanox has experience in the Industrial Sector for more than 25 years.

At Medium Voltage, the comprehensive range of SIA & SIL Protection Relays provides the total protection requirements of Primary & Secondary Distribution.

The communication section is created as a complement to help to interconnect relay in all levels, offering and guaranteeing complete solutions for the Smart Grid Industry at the same time that ensure maximum interoperability between multiple utility assets.

All of our products are developed by specialists and will optimize your safety while reducing maintenance costs