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Sepam series 20

Protection Relays for Standard or Usual Applications

Sepam series 20 offers 7 types of digital current or voltage protection for standard distribution systems, each one dedicated to a single application. Models available: Sepam S20, S24, T20, T24, M20, B21, B22.

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

    A ready to use Sepam series 20 includes :
    • One base unit
    • One 20 pin connector
    • One current or voltage connector (depending on the application)
    • One application
    • One operating language
    • Optional module(s) and/or optional communication interface(s) 
    • Optional core balance CT


    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 according to applications


    • Substation incomer and feeder protection: S20, S24
    • Transformer protection: T20, T24
    • Motor protection 2 voltage applications: M20
    • Busbar protection: B21
    • Loss of mains protections: B22


    • Sepam with basic UMI
    • Sepam with integrated advanced UMI
    • Sepam with remote advanced UMI
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