Fuse Switches in Power Electronics: Renewable Energy, Data Centers & EV Charging

As energy systems become more electrified and digitalized, Fuse Switches play a vital role in ensuring efficiency, reliability, and safety.
At Telergon, we design and manufacture high-performance switching and protection solutions that support today’s most demanding power electronics applications — from renewable energy and battery storage to data centers and EV charging infrastructure.

Auxiliary Services in BESS and Inverter Systems 

In Battery Energy Storage Systems (BESS) and Inverters (PCS), fuse switches protect auxiliary services such as lighting, ventilation, control systems, and PLCs.

• In Inverters, the auxiliary AC supply is derived from the DC/AC transformer at 690 VAC.
• In BESS, it typically comes from the grid at 400 VAC.

Both applications require safe isolation functionality — ensuring maintenance safety and proper circuit segregation.

Protection for Data Center Cooling Panels

Modern data centers rely on both air-cooled (HVAC) and liquid-cooled systems to maintain optimal temperatures.

• In HVAC panels, the switches provide reliable protection and control for cooling units.
• In liquid cooling systems, they isolate and protect motor drives in pumping panels against short circuits and overloads, ensuring uptime and operational safety.

Integration in Busbar Trunking Systems

Busbar trunking systems distribute electrical power across industrial facilities and large data centers.
Each time a feeder branches off to supply smaller loads, a protection and isolation device is needed — typically housed in a Tap-Off Box.

In high-performance environments operated by global hyperscale data centers, fuse switches are preferred for their high short-circuit capacity and robust protection — key advantages of Telergon’s engineered solutions.

Applications in EV Charging Infrastructure

In large-scale EV charging projects — such as parking facilities, shopping centers, or corporate fleets — Tap-Off Boxes equipped with fuseswitches are used to:

• Distribute power from the main busbar line to each individual charger.
• Simplify installation by avoiding individual cable runs to every charging point.
• Enhance modularity, reduce installation time, and ensure safe, reliable power distribution for expanding charging networks.

Telergon Solutions for a Reliable Energy Transition

Across renewable energy, digital infrastructure, and e-mobility applications, Telergon Fuse Switches remain a proven, efficient, and safe solution for isolation and protection.

They combine reliability, safety, and performance, supporting the global energy transition with trusted engineering and durable design.