ZENITH ZTS(D) T-SERIES 1600-3000 A & ZTSCT T-SERIES 400-3000 A — Operation and maintenance instruction Automatic transfer switches, Zenith ZTS T-series ATS 1. Introduction 6 1.1 Hazard Categories 6 1.2 Warranty 7 2. Product overview 8 2.1 General overview 8 2.2 LED functionally in HMI 11 2.3 Zenith ZTS(D/CT) T-series features 13