Example string combiner box with switch disconnector

String combiner boxes for photovoltaic systems

Safe disconnection in the event of a fire

Fire protection organizations and insurers are increasingly recommending so-called fire department switches. To minimize the risks for emergency services and ensure safe firefighting, the aim is to automatically switch PV strings close to the PV panels to load-free in the event of an emergency.

Main features

  • Motorized switch disconnector
  • Integrated surge protection (type T1/2)
  • Protection of up to 12 MPP trackers
  • Up to 2 strings per MPP tracker and 20 A per string
  • Maintenance-free connection with SUNCLIX or Push-in connection technology
  • Standard-compliant through the application of DIN EN 61439

Your Advantages

  • “Automatic” disconnection of the PV strings close to the PV panels
  • Fast installation and startup with preassembled string combiner boxes
  • Space-saving installation with the compact design
  • Simplified connection of the lightning protection potential balancing conductor with sufficient connection options
  • Reduction of the installation effort by combining the PV strings

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