CHINT NB2LE-40ZT Smart Residual Current Operated Circuit Breaker,
with Over-current Protection (Electronic) integrates overload,
short-circuit, overvoltage, undervoltage, and leakage protection with intelligent monitoring and remote control capabilities.
Designe for 230 V AC 50 Hz systems, it features RS485 or Bluetooth communication,
enabling real-time data collection and remote operation through CHINT’s Smart Gateway (SMG-WL1SR).
Its built-in metering and diagnostic functions ensure safe, efficient,
and connecte energy management in residential, commercial, and industrial power systems.
- Function: Overload, short-circuit, overvoltage, undervoltage, leakage, and remote control protection
- Standard Compliance: IEC/EN 61009-1
- Rated Voltage (Ue): AC 230 V
- Rated Frequency: 50 Hz
- Rated Current (In): 6 A, 10 A, 16 A, 20 A, 25 A, 32 A, 40 A
- Poles: 1P+N
- Tripping Curve: B, C curves
- Rated Residual Operating Current (IΔn): 30 mA
- Leakage Detection Types: Type AC and Type A
- Rated Breaking Capacity (Icn): 10 kA
- Rated Insulation Voltage (Ui): 500 V
- Rated Impulse Withstand Voltage (Uimp): 6 kV
- Dielectric Strength: 2 kV for 1 min
- Mechanical Life: 10,000 operations
- Electrical Life: 4,000 operations
- Operating Temperature Range: –40 °C to +70 °C
- Storage Temperature: –25 °C to +70 °C
- Altitude: ≤ 1500 m
- Communication Protocol: Modbus-RTU (RS485: A/B/GND terminals)
- Measurement Accuracy:
- Voltage: ±1.0%
- Current: ±1.0%
- Power: ±2.0%
- Over/Undervoltage Settings:
- Overvoltage action: 280 V ±5 V
- Overvoltage recovery: 250 V ±5 V
- Undervoltage action: 165 V ±5 V
- Undervoltage recovery: 190 V ±5 V
- Recovery delay: ≥ 10 s
- Mounting Type: TH35-7.5 Standard DIN rail
- Terminal Type: Cable/pin busbar connection
- Wire Capacity: 1–16 mm²
- Tightening Torque: 2 N·m
- Protection Degree: IP20
- Pollution Degree: 2
- Certifications: CE, RoHS, REACH
- Dimensions (mm):
- Height: 82
- Width: 36
- Depth: 78 (max)
