Electricity is a dangerous concept and can be deadly if not handled properly. This may seem obvious but plenty of circuit boards these days are equipped with hundreds of amps, which can cause issues if not leveled properly by a current limiter. This is especially important due to the volatile nature of electricity and how often faults can arise.
In the Electronic Design article, the author spends time to explain exactly how these current limiters keep workers safe should any fault occur. You can see pros and cons to these bipolar junction transistors that are used in these limiters and what makes them work to prevent any pending disasters. Using handy charts and data tables the article makes it easy to have a better understanding of the properties so workers in the electric industry can properly work without endangering those around them.