
Type B 4p 63A Semko, CB, CE Certified Residual Current Circuit Breaker. Advanced Type B Detection: Detects smooth DC, high-frequency, and compound wave residual currents up to 1kHz. Dual Detection Technology: Combines voltage-dependent and controlled inductor methods for AC and DC fault detection. Low Voltage Stability: Operates stably with minimum voltage of AC30V for reliable detection. Compact Design: Reduced size achieved through new detection technology while expanding functions. Comprehensive Protection: Prevents electrical fires and indirect contact dangers in high-frequency environments. Flexible Customization: Offers full, minor, and sample-based customization options for specific needs. CE and CB Certified: Meets international safety standards with CE and CB certifications. 100% Quality Inspection: All finished products undergo visual and functional inspection before shipment.