AC 480V 3 Phase Circuit Protection Voltage Monitoring Relay 5 Indicators Heavy Duty Phase Failure Sequence Protection Relay Stable for Air Compressors

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About AC 480V 3 Phase Circuit Protection Voltage

Feature: 1. Use 5 indicators to indicate: normal, phase loss (voltage three-phase unbalance), reverse phase, overvoltage and undervoltage. 2. 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. 3. Phase loss protection means that when the protected line is in the running state or non-operating state, any phase failure occurs, and the delay is 2S. 4. Reverse phase protection, a protection measure to prevent L1, L2, L3 three-phase AC phase sequence from being connected incorrectly, delay 2S action. 5. Voltage unbalance protection means that a three-phase voltage imbalance will affect a safe protection of the line. When the three-phase unbalance rate x100%>10%, the protection delay 2S action. 6. 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. 7. Undervoltage protection means that the voltage of the protected line is lower than the set value, the delay is 3~8S, and the recovery is 3~20VAC.  8. 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   Spec: Condition: 100% Brand new The Main Circuit: Rated Voltage: 480VAC Connecting Wires of the Main Circuit: The insulating copper wire has a carrying area of 1.0-2.5 mm. If a single strand of copper wire can be directly inserted into the terminal; if a cord is used, a needle type terminal must be added to the wire to ensure reliable connection. Auxiliary Circuit: A normally open and a normally closed contact that is electrically inseparable. Use Category: AC15, DC13