Phase sequence indicator. Phase sequence indicator 600 V CAT III with LEDs and touch-protected plugs. Compliance with device standard EN 61557 / DIN VDE 0413Checking the phase sequence in three-phase networksChecking for phase failureWide voltage and frequency rangeRobust constructionTechnical characteristics Nominal voltage range 100 ... 230/400 V 400 ... 690 V / 3~ < 3 min Nominal frequency range 45 ... 1000 Hz Nominal insulation voltage 250 V against earth Test voltage 3 kV Protection class II (protective insulation) Measuring category 600 V CAT III Protection type IP 50 Plastic housing UL 94 - V 0 Dimensions 70 x 105 x 38.5 mm Weight 0.3 kg. 1 rotary field direction indicator3 permanently connected connecting cables with touch-protected connector plugs3 attachable test probes each with attached safety cap 600 V CAT III, 1 A1 attachable crocodile clip 1000 V CAT III, 16 A