Best Microwave Fuses: Top 5 Replacements for Safe Cooking
Choosing the right microwave fuse is essential for protecting your appliance and ensuring safe operation. The following top picks cover common 6×30 mm, 20A 250V slow-blow ceramic fuses that fit a broad range of microwave models. Each option emphasizes reliability, compatibility, and durable construction to keep your microwave shielded from power surges and faults.
| Product | Brand | Key Feature | Model Compatibility |
|---|---|---|---|
| BOJACK Microwave Fuse 20a Ceramic | BOJACK | 6×30 mm, 20A, 250V slow-blow | WB27X10388 and many microwaves |
| Microwave Fuse 20 Amp 250V Slow-Blow (5-Pack) | BlueCatELE | 5-pack, universal ceramic fuse | GE WB27X10388, Whirlpool, Kenmore, many brands |
| Microwave 20 Amp 250V Ceramic Fuse (2-Pack) | HiQltyla | Ceramic tube, quartz sand, CSA certified | Most brands and models |
| 2 Pcs 20 Amp 125 Volt 611 Microwave Fuses | ExploreHome | 6×30 mm, 20A, 125V, 611 model | GE WB27X11138, Frigidaire and others |
| BOJACK 20A Ceramic Pack (10) | BOJACK | Pack of 10, 6×30 mm, 20A, 250V | WB27X10388 and similar models |
BOJACK Microwave Fuse 20a Ceramic – 1 Pack

Fuse Dimension: 6×30 mm; Current: 20A; Voltage: 250V. This slow-blow ceramic fuse is designed to protect microwave circuitry from overloads, helping prevent damage during power surges and short cycles. The ceramic construction enhances durability and arc resistance during fusing events.
BlueCatELE 5-Pack 20A Microwave Fuses

Includes: five 20A 250V slow-blow ceramic fuses. Broad compatibility with GE WB27X10388, Whirlpool, Kenmore, and many other microwave brands. Durable ceramic construction supports reliable, long-lasting protection against electrical faults.
HiQltyla 2-Pack 20A 250V Ceramic Fuses

These 6×30 mm ceramic cartridge fuses offer slow-blow protection for microwave circuits. The ceramic tube and quartz sand reduce arc risk during fusing, contributing to safer operation. They also meet safety certifications for electrical properties and include a 1-year warranty.
ExploreHome 2-Pack 20A 125V Microwave Fuses

Designed for compatibility with GE WB27X11138 and similar models, these fuses provide reliable protection at 125V. They safeguard microwaves against power surges and short circuits, with a secure 6×30 mm ceramic body for durability in routine replacements.
BOJACK 10-Pack 20A Ceramic Fuses

Pack of ten 20A 250V slow-blow fuses with 6×30 mm dimensions. Ideal for households requiring multiple replacements or for service professionals. Ceramic construction enhances safety and durability for long-term use.
Bussmann 2-Count 20A Microwave Ovens Fuses

Two-pack of 20A, 250V ABC fast-acting ceramic fuses. Known for reliable protection in microwave circuits. The ceramic tube supports safe operation and reduces risk of arc-related failures during fusing events.
QYKAVM 8-Pack 20A Microwave Fuses

Eight fuses rated 20A, 125V with 6×30 mm dimensions. Designed for broad compatibility with GE, Frigidaire, and other major brands. The kit offers multiple replacements to ensure continuous microwave protection.
Buying Guide
- Compatibility: Confirm the fuse size (6×30 mm) and rating (20A, 125V or 250V) match your microwave model requirements and the WB27X10388/WB27X11138 style replacements commonly used in many brands.
- Slow-blow vs. fast-acting: Slow-blow fuses handle startup surges and occasional overloads without tripping immediately, which helps protect sensitive microwave circuitry from brief spikes.
- Ceramic vs. glass: Ceramic-bodied fuses offer superior arc resistance and durability in high-heat spaces inside appliances, reducing the risk of fuse rupture and fire.
- Quality and safety certifications: Look for fuses with CSA or equivalent certifications to ensure electrical safety and performance standards have been met.
- Quantity and replacement plans: If you manage multiple microwaves, consider multi-packs to ensure you have replacements on hand and minimize downtime.
- Brand reputation and warranty: Reputable brands with warranties provide assurance of product longevity and protective service in case of manufacturing defects.
- Replacement procedure: Always unplug the microwave before replacing a fuse. Use the same size and rating and avoid bypassing the fuse to prevent fire hazards.