The TH48D30ZZ-220 is an intelligent 48V/30A (1440W) switching power supply module specifically engineered for communication systems. It features advanced resonant switching technology for reliable performance and supports both 220V AC and DC input, offering deployment flexibility. Equipped with a standard RS-485 interface, it enables easy integration into automated monitoring and control networks for "Four-Remote" functionality.

• Communication System Optimized: Specifically designed for compatibility with program-controlled switches and various telecommunication equipment.
• Dual Input Flexibility: Supports both AC (187-253VAC) and DC (198-286VDC) input, allowing for versatile installation in different power environments.
• Reliable & Smart Operation: Offers essential protection features (over-voltage, short-circuit, over-temperature), remote monitoring via RS-485, and stable parallel operation with excellent current sharing (<±5%).
• Compact & Efficient: Provides a compact footprint with over 90% efficiency, balancing performance with energy savings for continuous operation.

• Telecommunication Infrastructure: Powering core network equipment, program-controlled switches, and base station systems requiring reliable 48V DC power.
• General Communication Equipment: Serving as a dedicated power source for a wide range of communication and electronic devices compatible with 48V systems.
• Small to Medium Backup Systems: Acting as a core component in DC power systems or battery backup solutions for critical communication nodes.

• Automatic Current Limiting: Once the output current reaches the set current limit, the module automatically switches to constant current operation, preventing any further increase in output current.
• Overvoltage Protection: The output will automatically shut down if the voltage exceeds 62.5-63 VDC to protect connected equipment from damage.
• Short-Circuit Protection: During an output short-circuit, the module self-protects to prevent damage. After the fault is cleared, normal operation is automatically restored.
• Insulation Strength: Input to Chassis: 2KV AC 1 min 12mA | Input to Output: 2KV AC 1 min 5mA | Output to Chassis: 500V AC 1 min 5mA (No dielectric breakdown or flashover)

We are a high-tech enterprise integrating manufacturing, sales, system solutions, and after-sales service. With over 290 successful projects for 220 kV to 500 kV substations and battery systems above 1000 Ah, Tonhe has become a leading DC power system supplier in China, holding over 40% market share and producing 1 million modules annually. Choose us for exceptional quality, reliable support, and proven value.

Our 8 advanced production lines, equipped with imported machinery, achieve 80% automation and up to 99% first-pass yield. All power modules undergo double-sided potting, conformal coating, and rigorous functional, environmental, and aging tests—ensuring reliable 24/7 performance in critical power infrastructures.

We provide a full range of power conversion modules, system-level low-voltage DC distribution cabinets for DC loads, data center power systems, as well as customized hardware and software power solutions.

Yes, you can get sample orders to test our quality. The cost of samples is paid by the customer.

We accept payment via TT (Telegraphic Transfer).