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Ethernet Communication Interface Module ABB SPA-2C 400EM

Ethernet Communication Interface Module ABB SPA-2C 400EM

Product Description

The SPA-ZC 400 (SPA-ZC400EM) is a high-availability communication gateway developed by ABB to integrate RE_500 series protection relays into modern Ethernet-based substation automation systems. It converts legacy SPA serial communication into standardized Ethernet protocols, enabling seamless...

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SKU: SPA-2C 400EM
Vendor: ABB
Category: Ethernet Communication Interface Module
Related Series:

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Product Description

The SPA-ZC 400 (SPA-ZC400EM) is a high-availability communication gateway developed by ABB to integrate RE_500 series protection relays into modern Ethernet-based substation automation systems. It converts legacy SPA serial communication into standardized Ethernet protocols, enabling seamless interoperability with IEC 61850, Modbus TCP/IP, and SPA over TCP/IP networks.

Designed for digital substation retrofits, the SPA-ZC 400 allows utilities to extend the service life of proven protection hardware while adopting advanced SCADA, GOOSE messaging, and centralized disturbance analysis—without replacing existing relays.

Technical Specifications

Parameter Specification
Variant SPA-ZC400EM
Function Protocol Converter / Ethernet Communication Interface
Supported Protocols IEC 61850-8-1, Modbus TCP/IP, SPA over TCP/IP
Ethernet Interface RJ45 (Copper) or LC (Fiber Optic)
Device Communication Dual-port SPA / LON®
Supported Fiber Types Plastic Optical Fiber (POF), Hard-Clad Silica (HCS), Glass Fiber
Configuration & Engineering IEC 61850 data modeling, GOOSE configuration
Advanced Functions Disturbance recorder file upload via FTP / IEC 61850
Power Supply Powered directly from host RE_500 relay
Environmental Protection Optional conformal coating

Applications

The SPA-ZC 400 is widely deployed in medium- and high-voltage substations, particularly for:

  • Digital Substation Retrofits – Migrating SPA-based relays to IEC 61850 architectures

  • SCADA Integration – Ethernet-based supervision of legacy RE_500 protection terminals

  • GOOSE Messaging – High-speed horizontal communication between protection devices

  • Centralized Disturbance Analysis – Remote retrieval of fault records and event data

Commonly integrated with:

  • REF 541 / REF 543

  • REM 543

  • RET 541

FAQ

What is the difference between SPA-ZC 400 and SPA-ZC 402?
The SPA-ZC 400 is intended for RE_500 series relays, while the SPA-ZC 402 is designed for REF 610 and selected other relay families.

Does the SPA-ZC 400 support Ethernet redundancy (PRP/HSR)?
No. It provides a single Ethernet interface. Redundancy must be implemented using external managed switches or newer ABB gateways.

How is IEC 61850 mapping performed?
ABB supplies a Connectivity Package and Communication Engineering Tool (CET) to map internal SPA data points to IEC 61850 Logical Nodes and Data Objects.