JLLN-300

The JLLN-300 is an electrical circuit protection device, or fuse, designed for AC applications of up to 250 volts. It is designed to protect circuits against short-circuits, overloads and other potentially damaging currents or voltages. This fuse is available in a wide range of current ratings, from 20 to 250 amps, to ensure compatibility with specific project requirements.

The JLLN-300 is a time-delay type fuse, meaning that it will allow a higher level of current to pass through for a short period before it operates, allowing it to handle surges or non-continuous overloads, such as those produced by motors. The time delay is adjustable, so the user can select a specific maximum current and duration. The device is also self-resetting, resetting automatically after the overload has been removed.

The JLLN-300 is constructed of a molded thermoplastic body that houses a range of components including the fuse link, the thermal link, the metal contact and the sealing parts. The fuse link is made of an alloy which melts in the case of an overload, and then interrupts the circuit. The thermal link helps to prevent the current from exceeding a certain set value, helping to prevent damage to the fuse link, while the metal contact ensures that the fuse is properly connected to the circuit. The body and sealing parts help to protect the components within the fuse.

The JLLN-300 is commonly used in applications such as residential and commercial installations, lighting and heating systems, motors and transformers, and other electrical systems. It is designed to be easy to install and offers superior performance for the protection of circuits over time. Its time-delay capability makes it ideal for motor applications, and its adjustable time delay allows users to select the exact level of protection that is desired. Additionally, the JLLN-300’s self-resetting feature helps to minimize downtime due to transient faults.