Technical Data
| Rated supply voltage | AC220V | 
| Operation voltage range | AC140V-300V | 
| Rated frequency | 50/60Hz | 
| Hysteresis | Over voltage and asymmetry :5V Under voltage:3V | 
| Asymmetry trip delay | 10s | 
| Voltage measurement accuracy | ≤1%(over the whole range) | 
| Rated insulation voltage | 450V | 
| Output contact | 1NO | 
| Electrical life | 10⁵ | 
| Mechanical life | 10⁵ | 
| Protection degree | IP20 | 
| Pollution degree | 3 | 
| Altitude | ≤2000m | 
| Operating temperature | -5℃-40℃ | 
| Humidity | ≤50%at40(without condensation) | 
| Storage temperature | -25℃-55℃ |