SEL-3620, An Ethernet Security Gateway

Schweitzer Engineering Laboratories, Inc. (SEL) enhances the SEL-3620 Ethernet Security Gateway, with firewall and access control solution for substations and industrial environments. The upgrade adds centralized, user-based access controls to serial intelligent electronic devices (IEDs), Ethernet IEDs, and critical protection devices downstream of the SEL-3620, and does so without disturbing existing configurations or requiring infrastructure upgrades. It generates complex passwords and adds automatic password management that supports regular IED password changes on a user-configurable schedule or on a triggered basis.

For more information on the SEL-3620 or other SEL cybersecurity solutions, visit

Company Information

    Schweitzer Engineering Laboratories

  • 2350 NE Hopkins Court
  • Pullman, WA 99163 (see map)
  • Phone: 509/332-1890
  • Fax: 509/332-7990
  • Website: