Why Surge Protection Is Essential for EV Charging Stations

Surge protection for EV chargers is not optional; it is essential. EV charging stations are high-value assets, yet they are very vulnerable to power surges caused by lightning strikes, unstable power grids, and switching operations. Without protection, a surge can damage the charger, the vehicle, or both. Installing the right surge protection device for EV chargers ensures safe, reliable, and long-lasting operation.

In this article, we’ll explain the risks of surges, how surge protectors for EV charging work, and why solutions like the TOSUNlux TSP1 Series SPD make such a difference. You’ll also learn why a full protection system goes beyond SPDs and includes circuit breakers and isolators.

The Risks of a Power Surge

Every EV charger connects to the power grid. That connection exposes it to sudden bursts of voltage, known as transient overvoltages. These spikes last only microseconds but can exceed the safe rating of electronic systems.

The main causes of surges are:

• Lightning strikes that travel through power lines.
• Grid switching events, like transformer changes.
• Nearby equipment, such as large motors starting up.

Why is this dangerous? Electric vehicles have sensitive electronic systems, typically designed to handle about 2.5 kV. Many surges exceed that level, meaning a single event can cause damage. That’s why surge protection EV charging systems are necessary to prevent costly downtime and repairs.

The Solution: Surge Protection Devices (SPDs)

The most effective safeguard is a surge protection device for EV chargers. An SPD monitors voltage levels and instantly diverts excess energy to the ground before it can damage the charging equipment or the vehicle.

International standards like IEC 60364-7-722 and IEC 61643-11 recommend SPDs, especially for public charging stations. They specify the use of Type 2 SPDs with protection levels of ≤ 1 kV.

De TOSUNlux TSP1 Series SPD is a practical example. It provides reliable protection by:

• Limiting transient overvoltages.
• Protecting both AC and DC charging systems.
• Meeting strict international safety standards.

Choosing the right surge protector for EV charging not only ensures compliance but also keeps infrastructure safe under unpredictable conditions.

Building a Complete Protection System

Surge protection for EV charging is only one layer of safety. To achieve full protection, additional devices are required:

• DC circuit breakers protect against short circuits and overloads.
• Isolators allow safe disconnection during service.
• Residual current devices (RCDs) guard against electric shocks.

This is why TOSUNlux promotes a one-stop new energy product line. In addition to SPDs, the company offers DC breakers, isolators, monitoring devices, and other components designed to work together. The result is a charging station that is safe, durable, and always ready for users.

Conclusie

Investing in surge protection for EV chargers is a small cost compared to the damage a surge can cause. By installing an SPD and building a complete system, charging operators protect their assets, avoid downtime, and deliver safe charging experiences for drivers. Think of it as insurance for your charging infrastructure—once installed, it works quietly in the background, keeping your equipment secure.

Protect your EV charging stations with reliable surge protection solutions. Explore the TOSUNlux collection of SPDs, DC circuit breakers, and new energy devices to build a safer and smarter charging system. Learn more at TOSUNlux, your trusted electrical circuit breaker manufacturer.

Veelgestelde vragen

What is surge protection for EV chargers?
It prevents voltage spikes from damaging EV chargers and vehicles.

Why do EV chargers need surge protection?
Because they are exposed to lightning, grid switching, and voltage spikes that can harm sensitive electronics.What else is needed besides an SPD?
A complete system includes circuit breakers, isolators, and residual current devices.