Characteristics of performance1. The protection functions of relay 't be affected by current intensity of circuit or load, impulse current, imbalance current and load characteristic. The relay could long term work under full capability and full climate. Power consumption is lower than 2W.2. There is no requirement for connecting when it is used in protection of motor.3. This product measures up GB/T 14048.1-2000,GB14048.5-2001 eqv IEC60947-1:1999.4. The EMC of the product measures up the limits and methods of measurement of radio disturbance characteristics of GB4343-1995.Material: ABSColor as shownCharacteristics of working1. If the connection of L1, L2 and L3 phases are right, the green light of the relay illuminates and the relay closes. If they are wrong, the yellow light of the relay illuminates. Exchanging any two of , the relay will accept the phase sequence and begin to work normally. In this case that there occurs yellow light illuminated and relay unclosed after the equipment works normally, it should be a wrong connection of external circuit. The relay has a function of protection against wrong connection.2. While any of these L1, L2 and L3 phases is Na phase, the red light is lighted with the unlighted green light and the released relay. While the voltage come back to normal, it will immediately with lighted green light and closed relay.3. L1, L2 and L3 connect with three phase AC. NO, are normally contact point and NC, are normally closed contact point. Use lead to connect terminal directly.Package Contents:1 x TG30S phase sequence missing phaseOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.