Universal 20 Amp Fuse Compatibility: High-performance replacement for GE WB27X10388. Seamlessly fits major microwave brands including Whirlpool, Kenmore, LG, Frigidaire, Samsung, and Panasonic. Replaces part numbers 875392, AP3994062, and PS1481237. Slow-Blow / Time-Delay Safety: Engineered as a 20A 250V slow-blow fuse to handle high-current "inrush" during microwave startup. Unlike standard fuses, our time-delay technology prevents nuisance blowing while providing 100% protection for your appliance circuitry. Heavy-Duty Ceramic Construction: Built with a durable ceramic tube and high-purity quartz sand. Ceramic fuses offer superior thermal stability and higher breaking capacity than cheap glass alternatives, making them the safest choice for high-voltage microwave repairs. Professional Troubleshooting Support: If your fuse blows immediately after installation, it often indicates a faulty door switch, diode, or capacitor. Our 5-pack gives you enough inventory to diagnose and fix the root cause without extra trips to the store. Precise 6mm x 30mm Dimensions: Exact fit for 0.24" x 1.2" (6x30mm) fuse holders. Please verify your old fuse dimensions before ordering to ensure a perfect match for your specific GE, Sharp, or KitchenAid model. Bring Your Microwave Back to Life with BlueCatELE Don't let a blown fuse lead to a $400 appliance replacement. Our 20 Amp 250V Slow-Blow Ceramic Fuses are the industry standard for DIY microwave repair. Why Ceramic Over Glass? Microwaves generate intense heat and high voltage. Standard glass fuses can shatter under extreme failure conditions. Our ceramic fuses are filled with quartz sand to extinguish internal arcs, providing a safer, more reliable barrier for your home electronics. The "Instant Blow" Checklist: We see the reviews—sometimes a fuse pops the second you start the microwave. 90% of the time, this isn't a "bad fuse"—it’s a sign of a deeper issue. Door Switches: If your microwave pops a fuse when you open/close the door, your primary or secondary switches are likely stuck. High Voltage Diode: If the fuse blows only when you hit "Start," the diode may be shorted. Magnetron: A failing magnetron can pull excessive Amps, triggering the safety blow.