Product Overview

The SPA-ZC 400 (specifically the SPA-ZC400EM variant) is a specialized Ethernet communication adapter designed to bridge legacy ABB protection relays with modern substation automation environments. This interface module acts as a sophisticated gateway, converting the serial SPA bus communication protocol into Ethernet-based protocols, most notably IEC 61850-8-1. By deploying the SPA-ZC 400 (SPA-ZC400EM), engineers can integrate existing RE_500 series relays—such as the REF 541, REM 543, and RET 545—into modern station bus architectures. This enables advanced features like GOOSE messaging for horizontal communication between Intelligent Electronic Devices (IEDs), effectively extending the lifecycle of proven protection hardware while meeting current digital substation standards.

Detailed Technical Specifications