LA130URD72LI0280

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Electrical fuses are essential components for ensuring that electrical equipment is safe and functioning properly. They serve as switches that disconnect the circuit when an overload or short circuit occurs, thereby preventing circuit damage or destruction. The LA130URD72LI0280 is an ideal choice for outdoor electrical protection applications. This article explores the application field and working principle of the LA130URD72LI0280.

The LA130URD72LI0280 is a high interrupting rating (HIR) fuse, designed to provide reliable circuit protection in demanding outdoor applications exposed to damaging weather and humidity. This fuse is UL listed and is designed to provide up to 18 kilovolt (kV) intermittent working voltage protection. It is also suitable for periods of 125A rms symmetrical current, with a symmetrical interrupting rating (SIR) of up to 100 kA.

The LA130URD72LI0280 has a unique construction which allows it to reject dust, dirt, and humidity, while still providing reliable protection. It is also highly resistant to vibration and shock, and can withstand temperature extremes from -40°C to +85°C.

This fuse may be used in a variety of applications, including photovoltaic systems, power supply systems, nuclear power plants, motor controllers, and residential and commercial buildings. It is also suitable for equipment containing thyristor switching elements, as it has a high DC current capability and surge withstand rating.

The LA130URD72LI0280 is designed to work in two ways. First, it blocks the current when it exceeds a certain level—the maximum current rating (MCR). Once this current is exceeded, the fuse will open and interrupt the circuit. This is known as a thermal cut-off. Secondly, when a voltage more than the maximum working voltage (MWV) is applied, the fuse will open and break the circuit, protecting the device from damage. This is known as an opening voltage cut-off (OVCO). The lower the MCR and the higher the MWV, the better the protection provided by the fuse.

In addition, the LA130URD72LI0280 is designed to prevent premature fuse blowing due to the over-inclusion of transient current or an incorrect power factor setting. It is also designed to reduce fusing current, which helps to reduce the possibility of circuit damage and fuse ageing.

The LA130URD72LI0280 provides superior protection in outdoor applications due to its unique construction and features. It is highly resistant to environmental factors, and is designed to reject dust and dirt. It can also withstand temperature extremes and vibration, and is designed to reduce fusing current and prevent premature fuse blowing.

The LA130URD72LI0280 is an excellent choice for outdoor protection applications. Due to its high interrupting rating, it offers reliable protection in various applications, and is designed to reduce the risk of circuit damage or destruction. It is UL listed and is suitable for periods of 125A rms symmetrical current, with a symmetrical interrupting rating of up to 100 kA. With its superior construction and features, the LA130URD72LI0280 is a great choice for a wide range of outdoor applications.

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