GE 350 l Feeder Protection System

GE 350 l Feeder Protection System

Innovative and intuitive multifunctional feeder relay offering protection, control and monitoring in one integrated, economical and compact package. Protection functions of this relay include over current and directional elements along with auto reclose and breaker failure. This 3 Series relay is available with draw out or non draw out options.

The 350 is a member of the new SR 3 series family of protection and control devices from Multilin. This cost- effective protective device is used to perform primary circuit protection on low and medium voltage feeders. The protection functions of this relay include multiple phase, ground, and neutral time and instantaneous overcurrent elements, plus essential feeder breaker control features such as cold load pickup blocking, breaker failure, and auto-reclose. The 350 also offers enhanced features such as diagnostics, preventative maintenance, arc-flash mitigation and security.


  • Primary protection and control for medium and high voltage distribution utility and industrial overhead or cable feeder applications
  • Protection of small and medium size distribution transformers
  • Back-up protection of various HV applications
  • Capacitor bank protection
  • Advanced control applications including Cold Load Pickup, multi-shot recloser and multiple setting groups

Key Benefits

  • Cost-effective and flexible relay for distribution and industrial feeder applications
  • Ease of use and setup in one simple step
  • Environmental monitoring system to alarm on destructive operating conditions and plan preventive maintenance
  • Advanced power system diagnostics
  • Flexible communications with multiple ports and protocols allowing seamless integration
  • Arc flash mitigation via zone inter-tripping, flex curves, and multiple settings group
  • Powerful Security Audit Trail tool to increase security and minimize system risks
  • Application flexibility with the use of programmable logic elements
  • Effortless draw-out construction eliminates requirement for test switches
  • Draw-out or non draw-out options available
  • Increase network availability by reducing failover time to zero with PRP and HSR
  • Provide precise time synchronization by support for IEEE 1588 (Precise Time Protocol (PTP)
  • Accelerated life cycle testing for high reliability

Functional Block Diagram

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