Phase Sequence Monitor (Phase Sequence Relay) IK 9179 The phase sequence monitor IK 9179 is also available in the two housing variants SK 9179 and RK 9179. It is used to detect the direction of rotation (clockwise rotating field) and thus enables controlled switching on of loads with preferred direction of rotation. Advantages . According to IEC/EN 60255-1 . Detection of phase sequence in 3-phase systems . Without auxiliary voltage Features . Closed circuit operation . LED indicator for phase sequence . Output 1 changeover contact . Devices available in 3 enclosure versions: - I- and R-model, e.g. IK 9169 with depth 61 mm or RK 9169 with depth 71 mm with terminals at the bottom for installation systems and industrial distribution systems according to DIN 43880 - S-model, e.g. SK 9169 depth 100 mm, with terminals at the top for cabinets with mounting plate and cable duct . Width 17.5 mm Technical specifications Width: 17,5mm Enclosure design: Distribution board 1- / 3-phase: 3 Standard measuring range: 3 AC 400 V Measuring range max.: 3 AC 400 V Output contacts: 1 C/O contact Type: IK 9179 Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: IK9179.11 3AC50/60HZ 400V Art. No.: 0049182