Chint

CHINT - Voltage Protection Relay

Rs.4,730

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The CHINT NJYB3 Voltage Protection Relay is designed to provide precise monitoring and protection of electrical systems against overvoltage and undervoltage faults. It ensures reliable operation of connected loads by automatically disconnecting power when voltage levels exceed safe limits. Featuring adjustable settings, LED status indicators, and wide voltage compatibility, the NJYB3 relay is ideal for motor control, power distribution panels, and industrial automation applications requiring dependable voltage protection.

Product Information

Compliance standard: IEC 60255
Function: Overvoltage and undervoltage protection
Rated control supply voltage (Us):
- AC: 220V / 380V (selectable)
Operating frequency: 50 / 60 Hz
Voltage measurement range:
- For 220V type: 150–270V
- For 380V type: 260–480V
Setting accuracy: ±1.5%
Action delay time: Adjustable 0.1–10 s
Reset delay time: Adjustable 0.1–10 s
Hysteresis (reset differential): 1–10% adjustable
Contact configuration: 1 changeover (SPDT)
Contact capacity: AC 250V / 5A (resistive load)
Electrical life: ≥ 100,000 operations
Mechanical life: ≥ 1,000,000 operations
Mounting type: DIN rail or panel mount
Indication: LED for power, overvoltage, and undervoltage status
Insulation resistance: ≥ 100 MΩ (at 500V DC)
Dielectric strength: 2.5kV between coil and contact
Operating temperature: −5 °C to +40 °C
Storage temperature: −25 °C to +70 °C
Protection degree: IP20 (terminals) / IP40 (housing)
Dimensions: 80 × 36 × 67 mm
Weight: ~0.15 kg