Fanox SIA-C Standard CTs – Dual & Self-Powered Overcurrent & Earth Fault Relay
Fanox Dual & Self-Powered

Fanox SIA-C Standard CTs – Dual & Self-Powered Overcurrent & Earth Fault Relay

SKU FANOX-SIA-C
Fanox SIA-C is a Dual & Self-Powered overcurrent and earth fault protection relay for secondary distribution substations, RMUs and SF6-insulated switchgear. Accepts /1 A or /5 A standard CTs, includes recloser (79) and CT supervision (74CT) functions. Multiple auxiliary supply options (24 Vdc to 230 Vac/dc).
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Fanox SIA-C — Advanced Dual & Self-Powered MV Protection Relay

The SIA-C represents the highest specification within Fanox's dual/self-powered family. It supports both /1 A and /5 A standard CTs and offers an extended set of ANSI protection functions including recloser (79), CT supervision (74CT), unbalance (46), trip circuit supervision (74TCS), and breaker failure (50BF).

Key Features

  • Self-powered via /1 A standard CTs; start-up at 0.1 × In (3-phase)
  • Auxiliary supply: 24 Vdc, 48 Vdc, 110–230 Vac/dc; KITCOM battery adapter
  • Optional internal battery for offline commissioning
  • Up to 1,024 events, 20 fault reports, 10 oscillographic records × 50 cycles (COMTRADE)
  • Recloser (79), CT supervision (74CT), trip-circuit supervision (74TCS)
  • 3–4 setting groups; 3 configurable LEDs + 1–3 magnetic flags
  • RS485 rear port: Modbus RTU or IEC60870-5-103
  • RS232 front port + micro-USB front port (depending on model)
  • Vertical compact (177×155 mm), standard (177×189 mm) or horizontal (177.8×290.3 mm) housing

Technical Documentation

Datasheets

User Manuals

Protocol Manuals

Additional Resources