Dependable Circuit protections: 12A / 25A / 30Amp 250V, designed to safeguards microwave ovens from power surges and electrical faults It can better premature fuses failure caused by surges generated during the initial or ultimately use of the microwave oven, making the fuses more enduring and also making the microwave oven more stable to operate Easy to Replace: please turn off power before your replacement, Extend the life of your microwave oven by damaged ceramic fuses and installing new, making it easy to maintain your microwave Microwave fuses is a device that blows to cut the power when the microwave oven overheats or suffers a dangerously excessive current or power surges Slow Blow Functionality: Handles minors power fluctuations without premature failure, Manufacturer: KAHDGSS