Luminaires - Class of Protection

Luminaires are divided into three classes of protection according to the protective measures taken against electric shock.

• Class I : Touch-accessible metal components connected to the protective conductor. The protective conductor terminal is indicated by a symbol. 
• Class II : Live components are provided with additional protective insulation. Connection to the protective conductor is not allowed.
• Class III : Luminaires operated on safety extra-low voltages (<42V) that pose no danger to human beings.