0208007.DRT1P application field and working principle

Introduction

0208007.DRT1P is a kind of current-limiting fuses which is applicable for Surge Protective Device (SPD) installed on 50/60Hz, AC400V/415V line or circuit. Also, it takes on the circuit protection of various electric equipment and power lines. By swapping the fuse base, it can be directly connected with metal bar.

Application Field

Since 0208007.DRT1P meets the requirements provided in European standards such as EN61008-1 for fast acting type fuselink with rated voltage 400V, it can be used for applications involving AC circuits whose rated voltage are 400V or lower, and over-current protection of power distribution.

In the practical application, the effective current-limiting performance of 0208007.DRT1P makes it suitable for electric circuits at rated voltage of 400V or below as mechanical protection, and for SPD in surge protective device.

Besides, the high temperature anti-aging method of 0208007.DRT1P guarantees it with interrupter capability and normal use under high-temperature operation without fuse-off or premature melting.

Working Principle

0208007.DRT1P consists of a winded fuse, housing and end caps. The two end caps are welded to the fuse element and integrated into the fuse housing, forming a fuse top.

Under normal conditions, the fusing process is caused directly by I2t. When the current passes through the fuse, it heats the metal wire and the fuse starts to melt, eventually interrupting the current flow.

When the current rating is exceeded, the needed warm of the fuse element is generated by the current. The heat of fuse element melts it and interrupts the current flow. The reaction time depends on current rate, ambient temperature and stressing period.

Summary

In conclusion, 0208007.DRT1P is a kind of current-limiting fuse with high-temperature anti-aging, which is very suitable for the circuit protection of various electric equipment and power lines. The working principle of 0208007.DRT1P is mainly relying on I2t to start the fusing process.