... ;AC33B 3.Warranty 18month JATSN-400A Auto and Manual Change Over Switch 0. Standards and CertificatesStandards: IEC60947-6-2, GB14048.8 ... 2. Performance benefits of JATSN-400A Auto and Manual Change Over Switch 1) Electirc grade: CB grade, with short circuit ... type realizes manual or automatic transfer, voltage loss, under-voltage, over-voltage and phase loss transfer, setting of transfer time delay ...