7SR21-22

  • Numerical Multi-function protection
  • 7SR21 Non Directional Overcurrent and Earth Fault
  • 7SR22 Directional Overcurrent and Earth Fault
  • Integrated programmable logic
  • Optional Auto Reclose
  • Optional Synchronism Check
  • IEC61850 Goose capable




The 7SR210n and 7SR220n are a new generation of nondirectional and directional overcurrent protection relays, built on years of numeric relay protection experience with the Argus family of products.

Housed in 4U high, size E6 or E8 cases, these relays provide protection, control, monitoring, instrumentation and metering with integrated input and output logic, data logging & fault reports.

Communication access to relay functionality is via a front USB port for local PC connection or rear electrical RS485 port for remote connection. Additional rear port options are available including ethernet for IEC61850.