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Sepam series 20

Protection Relays for Usual Applications

Digital protection relays for current or voltage protection, for any distribution system

Sepam series 20
  • Features

    The Sepam series 20 includes 7 types of Sepam. One type of Sepam is dedicated to one application.


    • 3 types of UMI
    • 4 current inputs OR 4 voltage inputs
    • 10 logic inputs
    • 8 relay outputs
    • 1 Modbus communication port
    • 8 temperature sensor inputs


    Simplicity and performance, headed in the right direction Protect your power system with full peace of mind using Sepam protection relays.

    • 20 years of experience in digital relays
    • A consistent range of relays organised per applications


    3 current applications:

    • S20, S24: substation incomer and feeder protection
    • T20, T24: transformer protection
    • M20: motor protection

    2 voltage applications:

    • B21: busbar protection
    • B22: loss of mains protection
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