Manual Isolation of High Voltage

In Simple Terms

F1 cars must have a manual switch that allows the driver or team to physically disconnect the high-voltage power system from the electrical components. This is a critical safety feature that ensures the car's power can be shut down quickly in emergencies without relying on automatic systems alone.

• Manual isolation switches must disconnect both the positive (DC+) and negative (DC-) poles of the high-voltage battery
• This is separate from automatic safety contactors and provides a backup safety mechanism
• The switch must be accessible for immediate use by drivers or team personnel in emergency situations
• Compliance is mandatory for all power unit electrical systems in modern F1 cars