LZAGQ1-80A self-resetting over-voltage and under-voltage protector

LZAGQ1 series self-resetting over- and under-voltage protector (hereinafter referred to as protector) is suitable for users or loads with single-phase AC voltage of 220V or three-phase four-wire voltage of 380V, frequency of 50Hz, and rated working current of single-phase 63A, three-phase 100A and below. It is used as a protection for electrical equipment against over- and under-voltage of single-phase lines caused by neutral line faults. It is mainly used in the distribution lines of residential sub-boxes or other electrical equipment that need protection. When over- and under-voltage occurs in the power supply line, the protector can quickly and safely cut off the circuit under continuous high-voltage impact to avoid accidents caused by abnormal voltage being sent to the terminal electrical appliances. When the voltage returns to normal, the protector will automatically connect the circuit within the specified time to ensure the normal operation of the terminal electrical appliances without supervision. When transient or transient overvoltage occurs in the line, the protector will not cause false operation.

1. Classification:
1.1 According to the control circuit: single-phase self-resetting over-voltage and under-voltage protector (2P), three-phase four-wire self-resetting over-voltage and under-voltage protector (4P);
1.2 According to the line entry method: upper entry and lower line exit, lower entry and upper line exit.
2. Rated working voltage: AC220V50Hz(2P), AC380V 50Hz(4P).
3. Product specifications (maximum operating current): 25A, 32A, 40A, 50A, 63A, 80A, 100A.
4. Overvoltage protection action value: AC270V+5V(2P), AC460V±15V(4P).
5. Overvoltage protection recovery value: AC255V+5V(2P), AC440V+5V(4P).
6. Undervoltage protection action value: AC170V±5V(2P), AC300V±15V(4P).
7. Undervoltage protection recovery value: AC185V±5V(2P), AC325V±5V(4P).
8. Delay of power supply after power failure: ≤60s.
9. Protector power consumption: ≤2W.
10. Electrical machinery life: ≥ 100,000 times.