UL 248-13:2020 PDF Download

UL 248-13:2020 is a standard that specifically addresses semiconductor fuses with a voltage rating of 2000 V ac or lower. It is important to note that the standard allows for optional direct current (DC) ratings. The standard incorporates definitions of low voltage and high voltage based on regional electrical codes. In Canada, low voltage is defined as any voltage ranging from 31 to 750 V, while high voltage refers to any voltage above 750 V. In the United States, as per the National Electrical Code, high voltage is defined as exceeding 600 V in nominal terms. This standard provides guidelines and requirements for ensuring the safety and reliability of semiconductor fuses in electrical systems.