This voltage protector mainly used for residential household box entry or over-voltage,under-voltage or over-current protection of distribution lines for single-phase electrical equipment.
Its main feature is that the circuit has over-voltage or under-voltage, over-current condition,the product can cut off the power supply instantaneously to protect the electrical equipment from being damaged; and the protector can automatically turn on the power supply when the circuit voltage returns to normal.

| Product Name | Under Voltage And Over Voltage Protector 100A | Under Voltage And Over Voltage Protector 3 Phase 4 Wire 100A |
| Rated AC voltage | 230V+10% and fre-quence 50HZ/60HZ | 380V+10% and frequence 50HZ/60HZ |
| Passing Max Current | 100A | 125A |
| Max.Loading power | 23KVA | 22.8KVA |
| over-voltage action cut-offvalue | >AC270+/-5V | >AC460+/-15V |
| Dimension | 35L*70W*77Hmm | 35L*70W*77Hmm |
| Self power consumption | <2W | |
| Installing | 5mm DIN rall | |
| Electrical mechanical life | ≥4000 times | |
| Recovery relay time | 60s | |