025102.5NRT1L

025102.5NRT1L, commonly known as NRT1L, is a miniature time-delay secondary fuse linked to circuit protection applications. Mostly used in light commercial and residential applications, the NRT1L’s size and performance make it a reliable choice in protecting devices. Featuring a metal case that acts as an additional safeguard against fire, the NRT1L offers a maximum current rating of 15 amperes and a maximum voltage rating of 250 volts.

The NRT1L is a single-element fuse with an interrupting rating of 10000 amperes. It has a time-delay element, or "fusible link," that is the basis of its operation. This feature allows the fuse to provide coverage against a range of overcurrents, such as short circuits, motor overloads, and power surges. It also adds to the fuse’s overall protection against nuisance tripping, as short-circuit and overload currents are kept from exceeding the fuse’s rating.

NRT1Ls are primarily used in branch-circuit applications that require time-delay protection, such as ovens, motors, dryers, and other high-heat electrical equipment. The fuse comes equipped with both a metal case and a time-delay element, and it has been approved by Underwriters Laboratories and the Canadian Standards Association. The NRT1L’s time-delay element is designed to open relatively slowly, allowing the fuse to protect the circuit from short-circuit currents and motor overloads without tripping unnecessarily.

Although the NRT1L is a time-delay fuse, it is not recommended for use in circuits that require inverse-time protection. It should also not be used in circuits with loads that are not traditional inductive. When selecting a fuse, a customer should always consult product documentation to ensure that the fuse will provide the required protection. With the rising popularity of NRT1Ls in light commercial and residential applications, many manufacturers now offer them in multiple sizes and colors to meet their customer’s needs.