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1s27

General information

SKU
1s27
Short Description
High speed optical arc fault protection
Long Description
Quantity

Features

  • Four-point sensor inputs
  • Optional linear sensor input
  • Four high speed tripping outputs
  • One or two protection zones
  • Front panel reset
  • Continuous arc sensor supervision
  • Integrated self-supervision with fail alarm
  • Surface or rail mount

Application

The 1S27 provides high-speed detection and signalling of arc flash hazards in air-insulated metalclad switchgear, suitable for both new installations and retrofit applications. Arc fault protection can be implemented using arc-only detection or enhanced with current checking via existing protection relay logic and fast instantaneous overcurrent elements. The unit supports flexible mounting in a compact Delta size 2, 2U enclosure and includes plug-in terminals for easy panel pre-wiring.

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