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

A time-delay fuse is designed to allow a temporary overload without blowing, which is essential for protecting motor circuits during start-up conditions where high inrush current is experienced. Unlike standard fuses that are typically made from a single element, time-delay fuses actually have a design that incorporates at least two components or elements within their operation. This dual-element design allows them to withstand a brief surge in current before ultimately protecting the circuit by opening during sustained overcurrent conditions.

This mechanism is critical because it distinguishes time-delay fuses from standard fast-acting fuses, which blow immediately with overcurrent. In essence, the time-delay feature enables motors to start efficiently without compromise, making the understanding of their construction vital for effective electrical system management.