PULS: MCB vs eFuse – Which Is the Best Solution for Properly Securing DC Circuits?
In times of unregulated transformer power supplies, traditional miniature circuit breakers (MCB) have established themselves as the main protection modules. However, when primarily switched-mode power supplies were introduced in the 1990s, they quickly replaced transformer power supplies in industrial applications. The new technology enabled more efficient and compact power supplies that better met the increased demands of the industry. The era of transformers was thus over, but the MCBs remained and continued to be used in conjunction with switched-mode power supplies, even on the DC side. However, there are now much better and, above all, more reliable protection mechanisms, such as electronic circuit breakers.
