UL 248-11:2020 PDF Download

UL 248-11:2020 is a standard that specifically covers plug fuses with a maximum rating of 30 A and a voltage rating of up to 125 V ac (or 127 V ac for Mexico). This standard also allows for the inclusion of optional direct current (DC) ratings.

The purpose of this standard is to establish the safety requirements and performance characteristics for plug fuses in low-voltage applications. It sets forth guidelines for the design, construction, and testing of these fuses to ensure their safe and reliable operation.

Plug fuses are commonly used in residential and commercial electrical systems to protect circuits from overcurrent conditions. They are designed to be inserted into a plug-type holder or fuse block. UL 248-11:2020 provides detailed criteria for the design and construction of these fuses, including materials, dimensions, markings, and performance testing.

Compliance with this standard ensures that plug fuses meet certain safety and performance requirements, and it provides a basis for third-party certification and labeling.