KLKR.300T

KLKR.300T application field and working principle

Introduction

KLKR.300T is a high quality, high efficiency miniature fuse developed and designed for single-phase low voltage line protection. It is widely used in lighting, distribution and control circuits in urban and rural areas, high-rise buildings, villas, power generation, distribution and control equipment,etc. A fuse is an important part of the power distribution system and its working principle and application field will be introduced in this article.

Working Principle

KLKR.300T is a wire-type fuse. Its external casing is made of urea-formaldehyde or melamine heat-resistant plastic material, inside of which is the silica tube filled with conductive sand and filled with a small amount of air. In normal circumstances, the fuse wire crosses through the sand and is in conduction with the electrical circuit. Under normal circumstances, current flows directly through the fuse wire. If the current is too large, the fused wire increases its temperature and the resistance increases. Current flows in the form of heat, and the heat of the current is dissipated in the form of sand. When the current reaches its specified limit, the temperature of the fuse will rise rapidly and the fuse wire will melt, breaking the circuit and protecting the circuit from overload damage and fire potential.

Application Field

The KLKR.300T is mainly used in various types of low voltage systems and power distribution systems. It can protect lighting circuits, home appliances and power tools such as washing machines, refrigerators, air conditioners and electric fans. Various AC circuits of motors, pump motors, operating machines, transformers, motors and other motors can also be protected by KLKR.300T. It is also used in the protection of solar photovoltaic systems, wind power systems, uninterruptible power systems and home security systems. The KLKR.300T can also be used in switching circuits, track circuits and various auxiliary circuits in low-voltage control systems.

Conclusion

The KLKR.300T is a high quality, high efficiency miniature fuse developed and designed for single-phase low voltage line protection and is widely used in various types of low voltage systems and power distribution systems. Its working principle is based on the increase of the heat of the current when the overcurrent flows, so that the fuse wire is molten and the current is cut off to protect the circuit and prevent fire accidents.