Chint

CHINT Under/Over Voltage Protector

Rs.5,130

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The CHINT NJVA1 Voltage and Current Protector is an intelligent protection device designed to safeguard electrical equipment from overvoltage, undervoltage, and overcurrent faults. Featuring an integrated digital display, modular structure, and adjustable thresholds, it ensures quick response and automatic reconnection once power stabilizes. Suitable for AC 230V or 400V systems, the NJVA1 provides reliable protection for power grids, generator sets, substations, and industrial applications under unattended operation.

Product Information

Product type: Voltage and Current Protector
Poles: 1P+N / 3P+N
Rated operating voltage: AC 230V / AC 400V
Rated operating frequency: 50Hz
Rated working current: Adjustable
- 1–63A (default 63A)
- 10–100A (default 100A)
Overvoltage cut-off range: 240–300V adjustable (default 270V)
Undervoltage cut-off range: 140–200V adjustable (default 170V)
Overcurrent cut-off range:
- 63A: 1–63A adjustable (default 63A)
- 100A: 10–100A adjustable (default 100A)
Overcurrent confirmation delay: 6 seconds (protection triggered if exceeded)
Reconnection delay (power-on delay): Adjustable 5–300s (default 5s)
Reset delay after overcurrent trip: Adjustable 5–300s (default 30s)
Mounting method: Standard DIN-rail (TH35-7.5)
Environmental conditions:
- Operating temperature: −35°C to +70°C
- Relative humidity: ≤90% (at 20°C)
- Altitude: ≤3000m
Pollution level: 2
Installation category: II / III
Storage temperature: −35°C to +70°C
Dimensions:
- 1P+N 63A: 85.5 × 65.5 × 35.6 mm
- 3P+N 100A: 92 × 89.8 × 49.6 mm