0318.300VXP

Introduction

Fuses are widely used in electrical and electronic equipment as current limiting devices. They are designed to break the circuit in the event of excessive current and prevent further damage to the system and equipment. The application field and working principle of 0318.300VXP are analyzed in this article.

Application Field

0318.300VXP is a high-performance, fast-acting fuse that provides excellent protection to delicate electronic equipment. It is typically used in Class 2 Power Supplies, telecom and datacom systems, medical systems, audio/video systems, motor control applications, and similar low-voltage AC and DC circuits. Its wide capacity range enables economical selection for a given application.

Working Principle

0318.300VXP has a resettable thermal element which contains specil alloy. It is designed to open the circuit when the current exceeds its rated value. When the over-current passes through the element, the alloy experiences a rise in temperature. Its resistance rises drastically to a point where a gap is created between the two leads of the element, causing an arc over the gap. This serves to break the circuit, thus protecting the system from overloading.

Advantages

1. Low power clamping factor.
2. High surge rating.
3. High voltage rating.
4. Reusable.
5. Cooling plus power dissipation.

Usage

The 0318.300VXP should be selected for appropriate rated values of current, voltage, and hold-current. It should be mounted in a suitable manner to ensure that the ambient temperature around the fuse does not reach or exceed its specified temperature limit. It should also be installed in a manner so that it is not subjected to excessive vibration or shock. The fuse should be sized to avoid nuisance opening of the circuit. Care should be taken that the product is not connected, disconnected, or stored in an environment that has an excessive temperature, more then 80% relative humidity, and contaminating vapors.

Conclusion

The application field and working principle of 0318.300VXP have been discussed. It is generally used in low-voltage AC and DC circuits, and its working principle involves the opening of the circuit in the event of excessive current by creating an arc in the element. It has advantages such as low power clamping factor, high surge rating, and high voltage rating. In order to get the desired performance out of it, it should be used and stored in a manner that is not subjected to too much temperature and humidity.