Undervoltage relay BA 9043 The undervoltage relay BA 9043 of the VARIMETER series monitor 3-phase AC networks. The measurement is very simple and without extensive wiring as there is no auxiliary power supply necessary. The adjustment of the setting values is user friendly and done on 2 rotary switches on the front of the device. Advantages . Preventive maintenance . For better productivity . Quicker fault locating Features . According to EC/EN 60255-1 . 3-phase . For nominal voltage of 3 AC 100 / 57 to 690 / 400 V . Measures arithmetic mean value . Adjustable operate and release value . For 3p3w or 3p4w systems . De-energized on trip operation . LED indicator for operation and state of contact . Insensitive to harmonics . Frequency up to 400 Hz . Optionally with adjustable time delay . Width 45 mm Technical specifications Width: 45mm Operate delay: Yes Enclosure design: Switch cabinet 1- / 3-phase: 3 Output contacts: 2 C/O contacts Auxiliary voltage: Without Type: BA 9043 Nominal voltage max.: 3/N AC 690/400V Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: BA9043/002 3/N AC50-400HZ 220/380V Art. No.: 0026357