SL Power has released a Class II input variant of its TE150 external power supply, which means this compact unit requires no earth ground connection. This makes it ideal for use in a range of applications where earth ground is not available.

IEC protection Class II power supplies have a 2-pin input receptacle, IEC60320 C8 or C18 type.

There is either a double or reinforced insulation barrier between the input and the output. Many mobile phone chargers and laptop power supplies are Class II. Products designed with Class II insulation often are labeled as ‘Class II’ or ‘double insulated’ or will have the concentric square symbol on the safety label.