CHINT OUVR-1 Self-recovery Overvoltage & Undervoltage Protector,
provides intelligent automatic protection for low-voltage circuits.
Designe for AC 230/400 V, 50 Hz systems up to 80 A,
it instantly disconnects power during abnormal voltage fluctuations and automatically restores it when voltage returns to normal.
With LED status indication, a wide protection range (0 – 450 V), and 4 kV impulse withstand voltage,
the OUVR-1 ensures safe, stable, and unattended operation for household and commercial power systems.
- Rated Voltage (Ue): AC 230 / 400 V, 50 Hz
- Rated Operating Current (In): 32 A / 40 A / 50 A / 63 A / 80 A
- Poles: 1P + N, 3P + N
- Overvoltage Cut-off Value: 270 V ± 5 V
- Overvoltage Recovery Value: 240 – 260 V
- Undervoltage Cut-off Value: 170 V ± 5 V
- Undervoltage Recovery Value: 185 – 195 V
- Time-delay Re-close: 30 ± 10 s
- Power Consumption: < 2 W
- Mechanical & Electrical Life: > 50 000 operations
- Protection Range: 0 – 450 V (ensures no damage even at max fault voltage)
- Impulse Withstand Voltage: 4 kV (Category III safety standard)
- Operating Temperature: –20 °C to +65 °C
- Altitude: ≤ 3000 m
- Pollution Degree: Level 2
- Mounting Category: Class II / III
- Installation: TH35-7.5 DIN rail mounting; max tilt ≤ 5 °
- Connection Mode: Upper entry & bottom exit / bottom entry & upper exit
- Connection Capacity: ≤ 25 mm² conductor section
- LED Indication: Green – normal voltage; Red – over/under voltage
- Dimensions (mm): 83 × 66 × 45 (see page 43 diagrams)
- Mounting Example: TH35-7.5 rail; 1P + N or 3P + N configurations shown on page 43 illustrations
- Typical Applications: Household distribution boxes and commercial power lines requiring voltage stabilization and automatic recovery
