Temperature protection in EV charging cables is a built-in safety feature that automatically prevents overheating during the charging process. It continuously monitors the temperature at critical contact points—typically in the plug or control box—and interrupts or limits power flow if the temperature exceeds a safe threshold. This is essential to prevent damage to the cable, plug, vehicle inlet, or household socket, especially when charging at higher currents such as 16A or 32A.
How it works technically
In Voldt® charging cables with temperature protection, integrated sensors—often thermistors or thermal fuses—are positioned near the plug contacts and control circuitry. These sensors communicate with the control unit (IC-CPD in Mode 2 chargers, or the car's onboard system in Mode 3) to regulate or stop the current when a critical temperature is reached, usually between 70°C and 90°C depending on the component. For example, Voldt®’s mobile charging cable includes this feature in the plug housing to protect household sockets, which are less robust than dedicated charging stations.
Why temperature protection is crucial for safety and durability
Overheating is one of the leading causes of EV charging malfunctions and fire hazards, especially with cheaper cables lacking certification. Long charging sessions, poorly ventilated areas, or worn-out sockets can all lead to heat buildup. With temperature protection, the cable can proactively detect unsafe conditions and shut down charging before any damage occurs. This not only enhances user safety but also extends the lifespan of both the cable and the vehicle’s charging inlet.
Voldt® cables with built-in thermal protection
All Voldt® mobile chargers are equipped with advanced temperature monitoring, CE and TÜV certified for reliability. This makes them suitable even for older or less stable socket installations. In addition, Voldt®’s robust plug designs—crafted with European-grade materials—are engineered for excellent thermal conductivity and heat dissipation, further enhancing safety during daily use. When choosing a charging cable, always verify the presence of temperature protection for peace of mind and long-term performance.
