
Lyscb-I15 Back-up Protective Device for SPD Circuit Breaker SPD Specific Disconnector. Specialized SPD Backup Protection: Specially developed to provide ideal backup protection for SPDs, addressing safety risks of conventional breakers. No Nuisance Tripping: Ensures stable operation with no nuisance tripping when lightning current passes through the circuit. Rapid Fault Interruption: Provides rapid current interruption when the SPD fails in short-circuit due to thermal runaway or breakdown. Low Residual Voltage: Maintains low residual voltage under impulse current to protect connected equipment effectively. Wide System Compatibility: Suitable for TT, TN, and other power supply systems with AC 50/60Hz and rated voltage up to 400V. Full Customization Options: Supports customization from samples, designs, full customization, minor customization, and flexible customization. ISO 9001 Quality Control: Strictly operated under ISO 9001 system with full-process quality traceability and 100% finished product inspection. Free Sample Availability: Offers one free sample for testing, with shipping costs borne by the customer.