5 Qty. MDA 20A Slow-Blow Ceramic Fuse 20 Amp 250v MDA20A,MDA20

These worked great in a microwave that I feared was dead. It was a microwave just a year old and it must have been the result of another appliance on the same circuit and caused the fuse to blow. Instead of trying a costly repair or replacing the microwave, I took a chance on these fuses. I opened the microwave up and found the fuse and matched it specifically to this type of ceramic 20a slow-blow fuse. The pricing on these fuses as a 5-pack are so much cheaper in price than elsewhere I had found. So far so good, no issues, and the microwave is working good as new again. And just in case, I have 4 more fuses to work with. Caution, just be sure you are buying the RIGHT fuse match for your equipment. Fortunately everything was labeled pretty good and I was able to match the type. I learned a little too.

My microwave blew a fuse (20 Ampere type MDA) and I needed a few to troubleshoot the problem. So, Zhenhui Electronics to the rescue via amazon. I found an abraded wire with accidental contact with a capacitor terminal sharp knife-like edge, after I heard and saw a spark. I slipped some heatshrink tubing over the damaged wire insulation and re-routed it away from the capacitor, and replaced the fuse again for hopefully the final time. I also slipped two short pieces of heatshrink tubing over the capacitor quick-connect terminals incase any other wires shifted in-contact with that capacitor terminals. I tie-wrapped the wiring bundle to prevent future wiring problems.Two weeks later, and heavy daily use, not one problem with my microwave! The pack of fuses paid for purchase! Total time to troubleshoot-2 hours! Plus, easy access from the front panel, no need to remove the outer case (it's a large over-stove model with an outside-vented fan).The microwave is plugged into a dedicated 15 ampere power outlet, but the 20 amp microwave fuse blew immediately without tripping the name brand circuit breaker panel 15 amp circuit breaker! Incidentally, I was concerned about the 15 amp branch circuit breaker not tripping. So, I tested that circuit breaker by plugging in two electric heaters, and it tripped after 5 seconds of overload. All ok there! :-)

Fixed my microwave right away.

Perfect. Just wish I could've ordered one. My microwave stopped working. I tested the old fuse and it was bad. All the hardware stores around me don't stock them and it was going to take 5-7 days to come in. Plus they were a lot more expensive (for 1 vs 5). These came in 3 days (1 day later than expected) but worked great.

So glad I found these. I initially bought the wrong amperage if you read my 0.2A post, but found out after blowing the first one that I had read the microwave label for the amps wrong, they typed .20A instead of 0.2A and the decimal was almost invisible. Anyways, these slow blow 20amp ceramic fuses got my microwave back up and running after a week of down time. Faulty wall outlet blew it, not the microwaves fault. If you start smelling a fishy smell and you're not cooking fish, it's probably a wall outlet going bad. Beware. Easy install on my project, hope it's easy on yours.

I went to use my microwave and the thing just lost power. I was trained and worked in an Electronic shop for two years so knew right away that the slow blow fuse had blown. The fly back transformer that is in the microwaves use to be in the old chassis TV's. The transformer takes 110 volts up 23-25k volts just to power the Cathode Ray tubes (picture tube) the old TV's had in them. Being armed with this tid bit of info I then searched for the exact same slow blow fuse the microwave had in it. It came down to this purchase. I only needed one to fix the microwave although it was nice to have some backup fuses on hand. The microwave started up right away and hasn't had a problem since. I have voltage spikes where I live and I suspect that was the case here. The fuse saved the unit from frying the transformer and for that I am thankful! I had to get my girlfriends microwave out of storage and us it while the fuses were in transit. Installed the new fuse and voila it's alive!!

If you are willing to work y ou can save money by replacing your microwave fuse when it is completely dead.

I should have read the product description more carefully. I needed a standard 1/4" x 1 1/4" fuse, and that's what I saw in the product specs, so I purchased it.However, if you read the entire product description carefully, it's variously described as:- 1/4" diameter and 1 1/4" length- 1/4" (6.35 mm) x 1 1/4" (30 mm) (note: if you do the math, 1 1/4" is actually 31.75 mm, not 30 mm)- 6 mm x 30 mmSo, the seller has listed three different sizes, one of which makes no sense!!The fuses I received were actually 6mm x 30 mm, which is slightly smaller diameter and shorter than what I thought I was ordering. I installed one of the fuses in my microwave and the fit was very loose, which is NOT what you want for an electrical connection.After reading some more reviews that described size issues, I'm convinced that this merchant sells fuses from multiple sources that are various sizes that they're trying to sell to unsuspecting customers. Maybe it's surplus stock that the suppliers are trying to get rid of? A close examination (see photos) of the fuses reveals sub par quality. Fortunately, Amazon refunded my purchase price when I contacted them and explained the problems.