Yueqing Yijin Electronics Co., Ltd.
Over and Under Voltage Protector
YJQG2 18mm 1P+N self resetting overvoltage and undervoltage protector
Scope applicationThe multifunctional overvoltage, undervoltage, and overcurrent intelligent protector is a comprehensive intelligent protector that integrates overvoltage protection, undervoltage protection, and overcurrent protection. When any line experiences overvoltage, undervoltage, or overcurrent faults, this product can instantly cut off the power supply to avoid unnecessary damage to electrical equipment.When the line returns to normal, the protector…
Scope application
YJQG self resetting overvoltage and undervoltage delay protector is a new generation product developed by our company according to market demand. The protector is designed reasonably and assembled with imported components and domestic * * components, using advanced manufacturing techniques. The product can quickly and reliably cut off the power supply under high voltage impact and undervoltage conditions, protecting household appliances. When the voltage returns to normal, after a delay, it can automatically connect the circuit and restore power supply, effectively protecting appliances from the impact of momentary power on. All functions are fully automated, without the need for dedicated personnel to operate, and dual light indicators are selected.
Model Meaning
Main parameters and technical performance
| Technical Parameter | Yijin Electronics |
| product name | Automatic reset overvoltage and undervoltage delay protector (with button) |
| Product series | YJQG2-40 |
| rated operational voltage | AC230V |
| Rated current | 40A |
| Overvoltage protection range | 275±5V |
| Overvoltage recovery value | 255±10V |
| Undervoltage protection range | 175±5V |
| Undervoltage recovery value | 190±5V |
| Rated withstand impulse voltage | 4KV |
| Self recovery delay time | 30s±10s |
| control mode | Hand to body integrated (local button manual control switch) |
| Working mode | Overvoltage and undervoltage automatic opening/normal voltage automatic closing |
| Rated frequency | 50HZ |
| altitude | Not exceeding 2000m |
| Electrical lifespan | 1×10⁵ |
| mechanical life | 2×10⁶ |
| ambient temperature | -5℃~40℃ |
| Installation method | Rail type |
Normal working conditions
4.1 Surrounding air temperature
a. The upper limit value does not exceed+40 ℃
b. The lower limit value shall not be lower than -4 ℃ ℃.
c. The average value within 24 hours shall not exceed+30 ℃.
d. Extreme operating temperature -10 ℃~+60 ℃.
4.2 Altitude
The altitude of the installation site shall not exceed 2000 meters.
4.3 Atmospheric conditions
a. When the ambient air temperature is+35 ℃, the relative humidity of the air does not exceed 50%, and there can be higher relative humidity at lower temperatures.
b. When the monthly average lowest temperature of the wettest month is 20 ℃, the monthly average relative humidity is 90%.
c. We have taken into account the condensation that may occur on the surface of the product due to temperature changes.
4.4 Pollution level
The pollution level used for the protector is level 2,
4.5 Installation Category
The installation category is labor and blood.
Product size
For electrical maintenance and installation, it is necessary to ensure that the operator holds the qualification for electrical work and takes necessary power-off and insulation protection measures.
