Description The base of the protector adopts a rail type with two screw holes, which can be directly installed separately or mounted on the HT35 rail. Use 5 indicators to indicate: normal, phase loss (voltage three-phase unbalance), reverse phase, overvoltage and undervoltage. With phase loss protection, when the protected line is in the running state or non-operating state, any phase will have a phase failure fault and delay 2S action With reverse phase protection, a protection measure to prevent L1, L2, L3 three-phase AC phase sequence from being connected incorrectly, delay 2S action. Voltage unbalance protection means that a three-phase voltage imbalance will affect a safe protection of . When the three-phase unbalance ratex100% 10%, the protection delay 2S action. 1. Overvoltage protection means that the voltage of the protected line is higher than the set value, and the delay is 3~8S, and the recovery is 6~20VAC. 2. Undervoltage protection means that the voltage of the protected line is lower than the set value, and the delay is 3-8S, and the recovery is 3-20VAC. 3. Products are widely used in air compressors, electric motors, distribution boxes, water pumps, oil pumps, central air conditioning units, electric control boxes, power distribution cabinets, etc Material:Plastic + metal colour:gray Package Contents: 1 * Protector Only the above package content, other products are not included. Note: Light 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.