SACO 16 D3 Annunciator Unit Product Guide

This document describes the SACO 16 D3, a flexible 16-channel annunciator unit from ABB’s SPACOM product family, used for supervising alarm and signalling contacts in power plants, substations, and industrial processes. It features field-customizable alarm channels, output relays, first-out alarm indication, serial interface communication, and a self-supervision system for high operational reliability.