Undervoltage Relay, 3-Phase With Test Key IL 9176 The undervoltage relay IL 9176 of the VARIMETER series monitors 3-phase alternative current mains. The measurement is very simple and without extensive wiring, as no separate auxiliary supply is necessary. With the help of the test button on the front of the device, a fault is simulated and the relay contacts de-energized. Advantages . Preventive maintenance . For better productivity . Quicker fault locating Features . According to IEC/EN 60255-1 . Detection of - Undervoltage 1 up to 3-phase, 0.85 x UN - Phase failure . Without auxiliary voltage . De-energized on trip . LED indicator for L1, L2, L3 with test key to simulate failure . 2 changeover contacts . Width 35 mm Technical specifications Width: 35mm Enclosure design: Distribution board 1- / 3-phase: 3 Standard measuring range: 3/N AC 400/230 V Measuring range max.: 400 V Output contacts: 2 C/O contacts Type: IL 9176 Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: IL9176.12 3AC50/60HZ 400/230V Art. No.: 0059134