Class 155 refers to the thermal class of the enameled aluminum wire, which means that the wire is capable of operating at higher temperatures for longer periods of time without damage. This means that the wire can withstand higher operating temperatures, usually around 155 degrees Celsius.


Enameled aluminum wire is lighter in weight and less costly than copper wire. The low density of the aluminum conductor gives enameled aluminum wire an advantage in applications where weight is critical. In addition, enameled aluminum wire has good electrical conductivity and high heat resistance.

When using enameled aluminum wire, there are a number of factors to be aware of due to the properties of aluminum. Due to the higher resistivity of aluminum, enameled aluminum wire will have a higher resistance than copper wire of the same cross-sectional area. This means that in some high current load applications, aluminum conductors may require a larger cross-sectional area to meet the requirements. In addition, aluminum reacts with oxides in the air to form a film of aluminum oxide, which may have an effect on conductivity. Therefore, special care needs to be taken to keep the conductor clean and in good contact during installation and connection.

Heat-resistant Class 155 enameled aluminum wires are commonly used in the windings of low-voltage transformers, such as distributed transformers, power transformers and frequency converters. They are also commonly used in power equipment, generators, electric motors and other applications requiring lightweight conductors.

Please note that specific product specifications and application requirements may vary depending on the manufacturer and the particular project. Therefore, when selecting and using enameled aluminum wire, it is recommended to refer to the relevant technical specifications and information provided by the manufacturer.