Interface relay CB 3057 The interface module CB 3057 is suitable as a link between control and main circuit with integrated selector switch. It is usable for manual operation during system failure. Advantages . Test possible without influence on PLC Features . According to IEC/EN 60947-5-1, IEC/EN 61810-1 . With service switch Auto/On/Off . Input AC/DC 24 V . 1 changeover contact 5 A . LED indicator . Width 11.5 mm Technical specifications Output contacts max.: 1 C/O contact Width: 11,5mm Enclosure design: Switch cabinet Nominal voltage: AC, AC/DC Initiator triggering: Yes Thermal current Ith max.: 5A Type: CB 3057 Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: CB3057.11 AC/DC24V Art. No.: 0045545