(Selection Guide) — How to Select the Right Fuse for Power Systems Protection

selection of right fuse for power system protection

“A fuse is essentially a metal wire or strip that heats up and melts when too much current flows through it, thereby opening the circuit and interrupting the current flow.”

In order to select the right fuse for a given system, it is imperative that the various fuse parameters are thoroughly understood. Hence, this guide will first define each contributing factor and then explain how it is used by engineers and circuit designers to choose the best device for circuit protection.

We just launched our Power Systems Engineering Vlog series and in this series, we are going to talk about all sorts of various power system engineering studies and commentary. We will overview the different blogs written by AllumiaX. It’s fun, it’s lively, it’s a video blog essentially and we hope that you’ll join us and benefit from it.

The following factors should be considered when selecting a fuse for a given system:

  1. Normal operating current
  2. Operating Voltage
  3. Ambient Temperature
  4. Inrush Currents
  5. Maximum Fault Current
  6. Length of time in which the fuse must open

Maximum allowable I²t

To learn each factor in detail , CLICK HERE!!

On AllumiaX Blog page, you will find high quality and professional content related to Arc flash, Short circuit, Snubber circuit, Load flow, Coordination and other Power system studies. Stay connected with us. Be sure to follow us on Twitter and Facebook.

About The Author

Abdur Rehman is a professional electrical engineer with more than eight years of experience working with equipment from 208V to 115kV in both the Utility and Industrial & Commercial space. He has a particular focus on Power Systems Protection & Engineering Studies.

Abdur Rehman is the CEO and co-founder of allumiax.com and creator of GeneralPAC by AllumiaX. He has been actively involved in various roles in the IEEE Seattle Section, IEEE PES Seattle, IEEE Region 6, and IEEE MGA.

Leaders in Industrial & Commercial Power Systems Engineering