Collection: Class 4 Sleeves

For Class 4 electrical sleeves, voltage testing involves ensuring they can withstand a proof test voltage of 70,000 volts DC and are certified for use up to 36,000 volts AC. 

Here's a more detailed explanation:

Class 4 Sleeves:
These sleeves are designed for use in environments with high voltages, specifically up to 36,000 volts AC (36kV). 

Proof Test Voltage:
Class 4 sleeves are proof-tested at a higher voltage than their maximum use voltage to ensure they can withstand electrical stress. The proof test voltage for Class 4 sleeves is 70,000 volts DC. 

Maximum Use Voltage:
While tested at 70,000V DC, Class 4 sleeves are certified for use up to 36,000V AC.