AI & Energy Storage Upgrade: 800V High Voltage DC Leads New Application Wave of DC Contactors & Fuses

With the rapid development of AI computing centers, big data centers and new energy storage industries, the power capacity of single server cabinet in data centers has increased significantly, rising from the traditional 6kW to an ultra-high power level of 600kW—1MW. The original AC power supply structure can no longer meet the construction requirements of high-density, low-loss and high-reliability computing infrastructure.

Following the release and implementation of 800V High-Voltage DC Power Supply Technical White Paper for Data Centers 2.0, the 800V high-voltage DC power supply architecture has become the mainstream construction standard for data centers, industrial and commercial energy storage, and optical storage and charging integrated projects. It delivers comprehensive energy efficiency improvement of 5%-8%, reduces machine room floor area by more than 40%, and supports seamless integration with photovoltaic and energy storage systems.

In the high-voltage DC power distribution system, DC contactors and DC fuses are core components for circuit on-off control, overload protection and short-circuit protection, which directly determine the operational stability and safety redundancy of the entire power system. The operating conditions of high voltage, large current and frequent load fluctuation set higher access standards for product withstand voltage level, DC breaking capacity, wide temperature adaptability and electrical service life, driving the industry to upgrade to DC 800V, DC 1000V and DC 1500V high-voltage specifications.

At present, the penetration rate of industry application keeps rising. The 800V DC power supply solution has been deployed on a large scale in leading AI data centers, and will be fully popularized to small and medium-sized computer rooms and distributed energy storage stations. The accelerated standardized construction of downstream terminal projects continuously releases demands for standardized selection, bulk supporting and customized adaptation of high-voltage DC contactors and high-voltage fuses. The supporting value of high-voltage products per unit is obviously higher than that of traditional low-voltage solutions.

The supporting capacity of domestic high-voltage DC components is becoming increasingly mature. Local manufacturers continue to make breakthroughs in core materials, structural technology, performance testing and mass delivery. Product performance is fully comparable to international standards, perfectly matching project demands in data center energy storage, new energy power distribution and high-voltage industrial control. Meanwhile, it features stable delivery cycle and flexible customized services, accelerating the localization substitution process of the industry.

In the future, driven by the implementation of the East Data West Computing project, the expansion of new energy storage installed capacity and the extension of new energy high-voltage platform scenarios, the application scope of 800V/1500V high-voltage DC will continue to expand. As key components for power safety protection, DC contactors and fuses will keep pace with the industry development trend of high voltage, miniaturization, modularization and high reliability, providing stable and reliable core component support for computing infrastructure, new energy storage and industrial control power distribution fields.