Phase-sequence relay BA 9041 The phase sequence relay BA 9041 monitor the right order of the phases in a 3-phase system. Advantages . Correct sense of rotation of motors . Simple wiring Features . According to IEC/EN 60255-1 . Detection of wrong phase sequence . With 2 changeover contacts . Width: 45 mm Technical specifications Width: 45mm Enclosure design: Switch cabinet 1- / 3-phase: 3 Standard measuring range: 3 AC 400 V Measuring range max.: 500 V Output contacts: 2 C/O contacts Type: BA 9041 Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: BA9041 3AC50HZ 500V Art. No.: 0026353