B Type RCCB Residual Current Circuit Breaker 4Pole Type B RCD RCCB Type B can detect high frequency AC and pure DC earth leakage currents in addition to normal AC. It automatically disconnects the electrical supply to reduce the risk of fire and/or electric shock. Electrical Features: - Type (waveform of earth leakage current sensed): B - Rated current (In): 40A, 63A - Poles: 4P - Rated voltage (Ue): 415V~ - Insulation voltage (Ui): 500V - Rated frequency: 50/60Hz - Rated residual operating current (IΔn): 30mA - Rated residual making and breaking capacity (IΔm): 500A (In=25/40A), 630A (In=63A) - Short-circuit current rating (Inc): 10000A - SCPD: Fuse 10000 - Maximum break time at IΔn: 0.1s - Rated impulse withstand voltage (1.2/50μs): 4000V - Power frequency dielectric test voltage (1min): 2.5kV - Electrical life: 2,000 cycles - Mechanical life: 4,000 cycles - Installation: Fixed - Contact position indicator: Yes - Protection degree: IP20 - Operating temperature: -5°C to +40°C (daily average 35°C) - Storage temperature: -25°C to +70°C - Terminal connection type: Cable, Pin-type busbar, U-type busbar Automatically disconnects the circuit when earth fault or leakage current exceeds the rated sensitivity. Suitable for use in circuits with stable power supply and minimal voltage fluctuation. Models available with two, three, or four current paths. Package Contents: 1 x Circuit Breaker Note: The package includes only the items listed above. Light reflection and display differences may cause slight color variations between the image and the actual product. Measurement error allowed: ±1-3cm.