True or False: A time-delay fuse only has one element.

A time-delay fuse, also known as a delayed fuse, typically contains one primary fusible element designed to withstand a short overload of current for a specified time without blowing. However, these fuses can also be equipped with additional components or elements designed for various specific applications, which may lead to the presence of multiple elements in certain designs.

The presence of additional components can affect the fuse's performance characteristics, such as its response to transient overloads, indicating that while the primary function is served by a single fusible element, the existence of variations or enhancements shows that it’s not strictly limited to one element. Therefore, the correct answer reflects the understanding that time-delay fuses can have designs with more than one element based on their application or manufacturer specifications.