004255103

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Specialty fuses are an important type of electrical component whose primary role is to protect circuits and other electrical equipment from potentially catastrophic mishaps resulting from current overloads. The code 0004255103 identifies a specific type of specialty fuse – the type 2LX, time-delay, 250V class H fuse – and in this article, we’ll explore the application field and working principles that this fuse type is designed for.

The type 2LX is a 250V class H time-delay fuse, meaning that it’s suitable for circuits of up to 250 VAC and 500 VDC. The time-delay feature allows for a few moments’s delay before the fuse opens, which is important in protecting sensitive equipment that’s subject to sudden current demands or dips. The “LX” designation means that the fuse is made specifically for certain special applications, such as motor controllers, distribution panels, dry-type transformers, and other industrial electrical applications where surges and dips are common.

These type of fuses are typically formed from a tube of ceramic, which is filled with an internal conductor made of metal such as copper or aluminum. This conductor is heated by a high-current load, and as it heats, an internal element melts, breaking the circuit and protecting the equipment on either side. This fuse type is designed to react as quickly as possible, while still allowing for a small delay to ensure the best levels of protection.

The type 2LX is suitable for a variety of special applications, including AC line protection, transformer protection, disconnect protection, motor overload protection, and much more. Furthermore, its relatively long time delay also makes it useful for protecting against minor overloads while allowing motors and other large loads to draw more current on start than they would in steady state. This can be especially useful for industrial machines such as pumps, fans, and motors.

When it comes to suitable operating environments, the type 2LX is, in general, suitable in normal indoor environments. It can survive temperatures between -55˚C and +85˚C, and features a base metal or porcelain case for further protection. It should, however, be noted that certain mounting configurations should be avoided, since these can reduce the fuse’s effectiveness. Proper mounting is essential to ensure it always works as expected.

The type 2LX fuse is an excellent choice for medium-voltage applications such as motor controllers, transformers, and distribution panels where access to fuse replacements is restricted. Furthermore, its long time-delay allows it to protect certain applications while still allowing motors to draw more current during start-up than they would in steady state. When properly installed, it’s a perfect fit for many of the specialized requirements of industrial-grade or high-value installations.

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