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CQB3GQ-80 Series Self-Resetting Over-Under Voltage Protector
Product Overview
This protector can swiftly and safely interrupt circuits when over-voltage or under-voltage conditions occur, preventing damage to terminal electrical appliances and avoiding accidents caused by abnormal voltages. Once the voltage returns to the normal range, the protector will automatically reconnect the circuit within a specified time, ensuring that terminal appliances resume normal operation even in unattended situations. It is suitable for users or loads with a single-phase AC voltage of 230V, a frequency of 50Hz, and a rated working current of up to 80A. As a protective device for single-phase electrical equipment against over-voltage and under-voltage caused by neutral line faults, it is mainly used for incoming lines in residential distribution boxes or for protecting single-phase electrical equipment in distribution circuits.
Main parameters and technical performance
| Technical parameter items | Parameter value |
| Number of poles | 1P+N |
| Operating voltage (V) | AC230V |
| Rated frequency | 50Hz |
| Rated current (A) | 40, 63, 80 |
| Over-voltage action value | AC270V±5V |
| Under-voltage action value | AC170±5V |
| Delay time | 30s±10s |
| Mechanical and electrical life (times) | ≥100,000 times |
| Wiring torque (Nm) | 2~3 |
| Pollution level | Level 2 |
| Protection level | IP20 |
| Implementation standards | JB/T12762 |
Dimensions (unit: mm)
Ordering Specifications
When ordering a self-resetting over voltage or under voltage switch, please specify the following points:
a) Product model, such as CQB3GQ-80
b) Number of poles for self-resetting overvoltage and undervoltage: 1P+N
c) Rated current of self-resetting overvoltage and undervoltage relay: 40A, 63A, 80A) Order quantity, such as 100 pcs.
Order: CQB3GQ-80 1P+N 63A 100 pcs
