1. Made of high quality material, durable and long service life. 2. Small body, perfect replacement for old or broken one, easy to install 3. The protective functions of relay not be affected by current intensity of circuit or load, impulse current, imbalance current and load characteristic. 4. The relay could long term work under full capability and full climate, consumption is lower than 2W. 5. This relay has phase loss protecting, phase opposite protecting, voltage imbalance protecting and delay protecting function. Specification: Condition: Item: Relay Characteristics of Working: 1. 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 there occurs yellow light illuminated and relay unclose 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 phase, the red light is with the unlighted green light and the released relay. While the voltage come back to normal, it will immediately with green light and relay. 3. L1, L2 and L3 with three phase AC. NO, are normally open contact and NC, are normally contact . lead to terminal directly Color: gray + black Material: plastic + metal Package Contents: 1 * Phase Sequence Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.