Class L fuses are fuses used for main switches and feeders of maintenance switchboards, bolted pressure contact switches, main circuits of motor control centers, branch circuits of large motors, primary and secondary protection for transformers, and protection of power circuit breakers.

All major mainstream fuses, such as Bussmann, Littelfuse and Mersen, have fuses of this class. Currently, due to capacity issues and material shortages, there may be delays in factory delivery. Today, I list their corresponding models here so that you can choose and replace them.