over-current protection relay / synchronization / programmable / configurable



  • Measured/monitored value:

    over-current, synchronization

  • Other characteristics:

    programmable, configurable, multifunction, digital, panel-mount, differential


Use the SEL-311L Line Current Differential Relay with integral four zone distance backup for easy-to-apply, high-speed line protection.

Apply subcycle current differential protection with included four zone distance and directional overcurrent backup. Use single or dual differential channels for reliability. Apply the SEL-311L on two- or three-terminal lines. Unique measuring elements provide coordination with tapped loads. Reduce total project construction and operation costs through integration of the included four-shot recloser and relay logic operators into your automation system.

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