The NL1 Residual Current Operated Circuit Breaker (RCCB) is a magnetic-type leakage protection device designed to detect and isolate circuits during residual current faults. Offering sensitive earth leakage protection without over-current functionality, it ensures user safety and fire prevention in residential, commercial, and industrial installations. With a rated current up to 100A, sensitivity from 30mA to 300mA, and Type AC/A options, the NL1 delivers stable performance, high reliability, and IEC/EN 61008-1 compliance for modern power systems.

• Standard: IEC/EN 61008-1
• Function: Residual current protection only (no over-current protection)
• Rated Current (In): 25A, 40A, 63A, 80A, 100A
• Poles: 2P, 4P
• Rated Voltage (Ue): 230V (2P) / 400V (4P)
• Rated Frequency: 50/60Hz
• Residual Operating Current (IΔn): 30mA, 100mA, 300mA
• Tripping Type: Type AC: Detects sinusoidal alternating residual current; Type A: Detects sinusoidal AC and pulsating DC residual current
• Rated Conditional Short-circuit Current (Inc): 6kA
• Rated Conditional Residual Short-circuit Current (IΔc): 6kA
• Rated Insulation Voltage (Ui): 500V
• Rated Impulse Withstand Voltage (Uimp): 4kV (1.2/50 μs)
• Dielectric Strength: 2.5kV for 1 minute at 50Hz
• Mechanical Life: ≥20,000 operations
• Electrical Life: ≥10,000 operations
• Operating Temperature: −25°C to +70°C
• Storage Temperature: −40°C to +70°C
• Mounting Type: 35mm DIN rail (EN 60715)
• Connection Type: Cable or busbar connection
• Terminal Capacity: 25mm² (cable), 10mm² (busbar)
• Tightening Torque: 2 N·m
• Protection Degree: IP20
• Altitude: ≤2000m
• Installation Category: II / III
• Pollution Degree: 2
• Compliant Certification: CE, ISO9001