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OEM DC SPD 48V 60V 120V 150V Low Voltage SPD Surge Protective Device. IEC/EN 61643-31 Certified: Complies with international standards for DC power line protection against over voltage. Fast Response Time: Ultra-fast 25ns response time ensures immediate protection against instantaneous surges. Dual Thermal Disconnection: Features double thermal disconnection devices for enhanced reliability and safety. Visual Status Indicator: Green window indicates normal operation; red window signals defect requiring module replacement. Flexible Customization: Offers OEM/ODM services with customizable color, voltage, and current specifications. DIN Rail Installation: Designed for easy 35mm DIN rail mounting, suitable for compact distribution cabinets.