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Bently 3500/34 TMR (Triple Modular Redundant) Relay Module – 16 channels SIL 3

Technical Specifications:
  • Architecture: 3 × 8 relays, voted 2oo3
  • Contact Rating: 5 A @ 250 VAC
  • Operate Time: <15 ms
  • SIL Rating: SIL 3 / PL-e per IEC 61508
  • Diagnostics: Continuous coil and contact monitoring
  • Power: 10 W
  • Operating Temperature: –30 °C to +65 °C
  • Approvals: ATEX, IECEx, CSA

Detailed content

Functional Features:
  • Automatic discrepancy alarm on relay disagreement
  • Contact wear trending
  • Redundant 24 VDC coil supplies
  • Hot replacement of individual relay boards
Application Scenarios:
  • Nuclear plant primary coolant pump protection
  • Offshore platform fire-and-gas ESD loops
  • SIL 3 rated steam-turbine overspeed bolts

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