Get in touch

SIS Pillar

Electrical Disconnection Systems

SIS Pillar is an electrical isolation system specifically for lighting columns and illuminated sign applications. Each pole is fitted with a small sensor that, in the event of an impact, communicates with the monitor board triggering complete LV and ELV isolation within 0.2 seconds. Monitor boards are din rail mounted within a standard street lighting cabinet, providing electrical isolation to individual columns or circuits.

The system is fully compliant with EN12767:2007 (Electrical Isolation of Passively Safe Structures) and can be used with any passively safe structure.

Features & Benefits

  • Fully compliant with EN12767:2007
  • Successfully tested at MIRA
  • Disconnection time officially proven with timing device
  • Suitable for use with NE, LE and HE Passively safe columns
  • Appropriate for use in non-passive columns
  • Wide range of above and below ground systems available to suit all site conditions
  • Designed and built to your specification
  • Simple installation onto din rail or 3U rack
  • Design layout drawings and specifications provided
  • Provides isolation of individual structures or circuits
  • Installation simple to test and prove prior to commissioning
  • Guaranteed electrical isolation of all volts within 0.2 seconds of impact
  • System can operate with impact sensor located 3km from SIS monitor board
  • Guaranteed isolation of all VOLTS even if the the structure has not detached from its base
  • Isolates all volts even if Impact Sensor is destroyed
  • Automatic restart and recheck after power failure
  • Provides fault outputs for impact, voltage drop and other potential maintenance issues
  • Impact sensors easily replaced after impact
  • Simple means of re-energising circuit while the impacted structure remains isolated
  • Fault outputs can be connected to CMS or RMS systems
  • Enables simple isolation of individual column for maintenance works
  • Simple to test periodically

Sign up for exclusive news, events and announcements


For more information see our Privacy Policy.