5-Pack 20 amp Microwave Fuse 20a 250v, 0.24 x 1.2 inch for GE WB27X10388
4.5Editor score
Affordable 5-pack
Universal replacement
Durable ceramic build
Easy to install
In this guide
Microwave ovens rely on critical safety components to operate safely and efficiently. One of the most important parts is the ceramic fuse, which protects the internal circuitry from dangerous electrical faults. Choosing the right fuse ensures your appliance remains protected against overcurrent and power surges.
This guide compares ten top-rated ceramic fuses designed for 20A 250V applications. We evaluated each product based on compatibility, build quality, safety features, and customer feedback. Our analysis helps you identify the most reliable replacement options for various microwave brands and models.
Each pick includes detailed specifications, pros, and cons to assist your decision-making process. Note that product availability and pricing can change frequently on major retail platforms. Always verify your existing fuse specifications before purchasing to ensure a perfect fit for your appliance.
Top 3 Picks for Best 20A 250V Ceramic Fuses for Microwave Ovens
BOJACK Microwave Fuse 20a Ceramic Fuse 20 Amp 250V Slow-Blow Compatible and Universal Replacement for WB27X10388 and Other Microwaves
4.6Editor score
6x30mm dimensions
Slow-blow design
High quality ceramic
GE WB27X10388 compatible
Frienda 20 Pcs Microwave Fuse, 20a 250v Slow-Blow Ceramic
4.7Editor score
20 pieces included
Quartz sand filled
Safe operation
Long service life
Top 10 Best 20A 250V Ceramic Fuses for Microwave Ovens in 2026 Compared
The following table provides a side-by-side comparison of all ten products featured in this guide. It highlights key specifications and compatibility details to help you quickly identify the best option for your specific microwave model.
ProductsSpecificationsEditor scorePrice
Editor's Choice
BOJACK Microwave Fuse 20a
6x30mm dimensions
20A 250V
Slow-blow type
Universal replacement
4.6Editor score
Editor's Choice
Frienda 20 Pcs Microwave Fuse
6.35x30mm size
20A 250V
Quartz sand filled
20 pieces pack
4.7Editor score
Best Premium
HiQltyla 20A 250V Microwave Fuse
6x30mm ceramic
20A 250V
Slow-blow design
2 pieces included
4.6Editor score
BlueStars Upgraded 5-Pack WB27X10388
6x30mm ceramic
20A 250V
5 pieces pack
Quartz sand inside
4.5Editor score
5-Pack 20 amp Microwave Fuse
6x30mm dimensions
20A 250V
Ceramic tube body
5 pieces pack
4.5Editor score
Microwave Fuse – 20 Amp 250V
6x30mm size
20A 250V
Ceramic construction
6 pieces pack
4.4Editor score
(Pack of 10) 20 Amp 250V
6x30mm dimensions
20A 250V
Slow-blow time delay
10 pieces pack
4.6Editor score
BOJACK Microwave Fuse 20AL250V
6x30mm ceramic
20A 250V
Slow-blow type
20 pieces pack
4.6Editor score
Litoexpe 20-Pack 20A 250V
6x30mm fuse
20A 250V
Slow-blow delay
20 pieces pack
4.7Editor score
(Pack of 5) Microwave Replacement Fuse
Ceramic line fuse
20A 250V
Multiple compatibilities
5 pieces pack
4.7Editor score
1. BOJACK Microwave Fuse 20a – Best Overall 20A 250V Ceramic Fuses for Microwave Ovens
BOJACK Microwave Fuse 20a
6x30mm dimensions
20A 250V
Slow-blow ceramic
GE WB27X10388
This BOJACK microwave fuse offers reliable protection for your appliance with a slow-blow design. Rated at 20A and 250V, it effectively handles inrush currents while safeguarding against overloads. Customers appreciate its quality build and compatibility with popular microwave models like GE.
Pros
- High quality slow-blow
- Protects circuitry
- Compatible with GE
- Universal replacement
- Reasonable pricing
Cons
- Check size carefully
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The fuse features a ceramic tube construction that ensures durability and safety. Its dimensions match the standard 6x30mm size required by many microwaves. The slow-blow technology prevents unnecessary blowing during normal startup surges, ensuring consistent performance over time.
While highly rated, users should verify their existing fuse specifications before purchase. The packaging may vary, so checking the dimensions upon arrival is prudent. These minor considerations do not detract from its overall value and effectiveness as a replacement part.
Anyone needing a dependable replacement for their microwave fuse should consider this option. It provides peace of mind with its robust construction and safety certifications. The universal compatibility makes it suitable for a wide range of household appliances beyond just microwaves.
Superior Protection Design
The slow-blow feature allows the fuse to withstand temporary high currents during startup without blowing prematurely.
Wide Compatibility
This fuse works seamlessly with GE models and other major brands requiring a 20A 250V rating.
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2. Frienda 20 Pcs Microwave Fuse – Best Premium 20A 250V Ceramic Fuses for Microwave Ovens
Frienda 20 Pcs Microwave Fuse
6.35x30mm size
20A 250V
Quartz sand filled
20 pieces pack
Frienda offers an excellent value with a bulk pack of twenty ceramic fuses. Each fuse is designed for 20A 250V applications and features a slow-blow time delay. The quartz sand filling enhances safety by preventing glass fragments if the fuse blows.
Pros
- 20 pieces included
- Resist surge current
- Safe sand filled
- Long service life
- High rating
Cons
- Aftermarket product
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These fuses are built to handle high inrush currents common in microwave startups. The durable ceramic construction ensures long-term reliability in various household appliances. Users highlight the convenience of having multiple spares for future maintenance needs.
As an aftermarket product, it is important to verify compatibility with specific OEM models. The rating remains high due to consistent performance and safety features. The bulk packaging may be more than needed for a single repair but is cost-effective for families.
Ideal for those wanting a stockpile of reliable fuses, this set offers great value. It is suitable for protecting circuits against overcurrent and short circuits. The safety features make it a trusted choice for DIY repairs and professional technicians alike.
Enhanced Safety Features
Quartz sand filling prevents glass fragments and reduces arc risk during fuse failure.
Bulk Convenience
Getting twenty pieces ensures you have spares for multiple repairs or different appliances.
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3. 5-Pack 20 amp Microwave Fuse – Best Budget 20A 250V Ceramic Fuses for Microwave Ovens
5-Pack 20 amp Microwave Fuse
6x30mm dimensions
20A 250V
Ceramic tube body
5 pieces pack
This five-pack provides a cost-effective solution for microwave fuse replacements. Designed for 20A 250V, it fits many brands including GE, Whirlpool, and Kenmore. The slow-blow ceramic design ensures reliable protection against electrical faults.
Pros
- Affordable option
- Wide compatibility
- Superior safety
- Durable build
- Easy install
Cons
- Verify part number
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The ceramic construction offers excellent insulation and stability for long-lasting performance. Users report easy installation with clear specifications matching standard fuse holders. The affordable price point makes it accessible for budget-conscious homeowners.
While the price is low, it is crucial to confirm the part number matches your appliance. The bulk pack offers value for those needing spares. Overall, it delivers solid performance without compromising on essential safety features.
Great for quick DIY fixes, this fuse set restores your microwave efficiently. It protects internal circuits from overheating and power surges. The wide compatibility ensures you can use it across different microwave models and brands.
Universal Fit
Compatible with major brands like GE, Whirlpool, Kenmore, and many others.
Value Pack
Five pieces ensure you have backups for future replacements at a low cost.
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4. HiQltyla 20A 250V Microwave Fuse – Reliable 20A 250V Ceramic Fuses for Microwave Ovens
HiQltyla 20A 250V Microwave Fuse
6x30mm dimensions
20A 250V
Slow-blow design
2 pieces included
HiQltyla provides a compact two-pack of high-quality ceramic fuses. Each fuse features a slow-blow design to protect microwave circuitry from surges. The CSA certification adds an extra layer of assurance regarding safety and reliability.
Pros
- High quality materials
- CSA certification
- Quartz sand filled
- 1 year warranty
- Universal fit
Cons
- Check specifications first
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Built with high-quality materials, these fuses offer a long service life. The quartz sand filling prevents arc pulling and explosion risks compared to glass fuses. Users appreciate the clear documentation and straightforward installation process.
While a small pack, it is sufficient for most single replacements. Buyers should verify their fuse dimensions and ratings to ensure a match. The warranty adds value and confidence for those purchasing for the first time.
Ideal for those seeking certified safety products, this option stands out. It prevents fire risks through superior internal design. The universal replacement capability makes it a versatile choice for various appliances.
Certified Safety
CSA certification ensures all electrical properties meet established safety standards.
Arc Prevention
Quartz sand filling reduces arc pulling probability during fusing to prevent explosions.
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5. BlueStars Upgraded 5-Pack WB27X10388 – Durable 20A 250V Ceramic Fuses for Microwave Ovens
BlueStars Upgraded 5-Pack WB27X10388
6x30mm ceramic
20A 250V
5 pieces pack
Quartz sand inside
BlueStars offers an upgraded version of the standard WB27X10388 replacement. This five-pack includes fuses made from high-purity quartz sand for better insulation. The lifetime protection policy provides significant value for long-term users.
Pros
- Lifetime protection
- Well designed
- Quartz sand insulation
- Wide compatibility
- Easy fix
Cons
- Check part numbers
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The ceramic tube body ensures wear resistance and sturdy construction. It is compatible with a wide range of brands including GE, Whirlpool, and Panasonic. The installation is designed to be a quick five-minute fix for homeowners.
Users should be aware that repeated blowing might indicate other faulty parts. The documentation advises checking wiring or magnetron issues if problems persist. However, as a standalone replacement, it performs reliably for standard electrical faults.
This set is perfect for households wanting a reliable backup supply. It protects against power surges and overheating effectively. The lifetime warranty adds confidence for those unsure about aftermarket fuse quality.
Lifetime Warranty
Enjoy reliable performance with coverage for any defects or issues that may arise.
Superior Insulation
High-purity quartz sand maintains insulation and prevents current breakthrough.
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6. Microwave Fuse – 20 Amp 250V – Efficient 20A 250V Ceramic Fuses for Microwave Ovens
Microwave Fuse – 20 Amp 250V
6x30mm size
20A 250V
Ceramic construction
6 pieces pack
This six-pack guarantees direct replacement for the GE WB27X10388 model. It features a slow-blow design to handle inrush currents safely during startup. The premium ceramic construction ensures excellent heat resistance and electrical insulation.
Pros
- Guaranteed compatibility
- Slow-blow safety
- Premium ceramic
- 6-pack value
- Easy installation
Cons
- Verify size details
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Users find the bulk pack valuable for keeping spares on hand for future needs. The simple installation process allows for quick DIY repairs without professional help. Ratings reflect satisfaction with the reliable performance and safety features.
Buyers should always verify their old fuse's rating before installation. The listing provides clear instructions but double-checking prevents incorrect purchases. Overall, it offers a cost-effective and straightforward solution for microwave maintenance.
Suitable for both DIYers and pros, this set saves money and time. It is engineered specifically for microwave oven protection against surges. The universal fit makes it a practical choice for many common household models.
Safety-First Design
Slow-blow ceramic construction handles temporary high inrush currents effectively.
Premium Material
High-quality ceramic material provides excellent heat resistance and durability.
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7. (Pack of 10) 20 Amp 250V – Versatile 20A 250V Ceramic Fuses for Microwave Ovens
(Pack of 10) 20 Amp 250V
6x30mm dimensions
20A 250V
Slow-blow time delay
10 pieces pack
This ten-pack offers excellent value for frequent repair needs. The fuses are constructed with ceramic tubes, alloy, and nickel plated brass. Quartz sand filling adds safety by preventing arc issues during operation.
Pros
- Quartz sand filled
- Ceramic body
- Nickel plated brass
- 10 pieces value
- Universal fit
Cons
- Check size consistency
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Customers praise the slow-blow time delay feature for protecting sensitive circuits. It is suitable for various electronic devices beyond just microwave ovens. The universal replacement capability simplifies finding a match for different brands.
The bulk packaging ensures you have enough for multiple repairs over time. While the quality is high, verifying the dimensions remains a standard precaution. This option balances cost and reliability effectively.
Ideal for workshops or homes with multiple microwaves, this pack is practical. It handles circuit overcurrent protection efficiently. The build materials ensure stability and long-term performance in demanding environments.
Durable Construction
Combination of ceramic tube, alloy, and nickel plated brass ensures durability.
Arc Safety
Quartz sand filling minimizes arc pulling risks during fusing process.
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8. BOJACK Microwave Fuse 20AL250V – Bulk 20A 250V Ceramic Fuses for Microwave Ovens
BOJACK Microwave Fuse 20AL250V
6x30mm ceramic
20A 250V
Slow-blow type
20 pieces pack
BOJACK delivers a reliable high-quality slow-blow ceramic fuse in a bulk pack. The time-delay design protects against short surges while blowing during actual overloads. All units come packed in a convenient plastic storage case.
Pros
- High quality
- Plastic case storage
- Time delay design
- 20 pieces
- Reliable brand
Cons
- Verify dimensions
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The dimensions match standard 6x30mm requirements for most microwaves. Users appreciate the organized storage which keeps spares safe and accessible. The brand reputation adds a layer of trust to the purchase.
This is a great option for technicians who need a constant supply. It is cost-effective per piece compared to single units. The packaging ensures fuses remain clean and undamaged over time.
Ideal for those needing a large stock of fuses, this set provides value. The slow-blow feature ensures safe operation during startup. The consistent quality makes it a favorite among repeat customers.
Convenient Storage
Packed in a plastic storage case for organized and safe storage.
Reliable Brand
BOJACK is known for quality electronics components and accessories.
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9. Litoexpe 20-Pack 20A 250V – Safe 20A 250V Ceramic Fuses for Microwave Ovens
Litoexpe 20-Pack 20A 250V
6x30mm fuse
20A 250V
Slow-blow delay
20 pieces pack
This twenty-pack provides safety through ceramic construction that reduces arc flashover risks. It features nickel plated brass caps and quartz sand filling for stability. The ceramic body prevents hot metal spray compared to glass fuses.
Pros
- Ceramic body
- Reduces arc flashover
- Risk free shopping
- 30-day return
- High rating
Cons
- Confirm specifications
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Ideal for high amperage loads like microwave ovens, these fuses handle massive overloads safely. The 30-day return policy offers a risk-free shopping experience. Customers praise the safety benefits and bulk value significantly.
While the bulk pack may be large for one repair, the per-unit cost is low. Always confirm voltage and current ratings before ordering to avoid mismatches. The service support ensures a smooth buying process.
Great for those prioritizing safety, this set minimizes fire risks. It serves high power loads with fluctuations efficiently. The ceramic construction is a superior choice for demanding electrical environments.
Arc Flashover Prevention
Ceramic construction prevents arc flashover and reduces risk of bursting.
Risk-Free Shopping
30-day return and replacement service ensures customer satisfaction.
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10. (Pack of 5) Microwave Replacement Fuse – Flexible 20A 250V Ceramic Fuses for Microwave Ovens
(Pack of 5) Microwave Replacement Fuse
Ceramic line fuse
20A 250V
Multiple compatibilities
5 pieces pack
This set promises to exceed OEM requirements with a five-pack of ceramic fuses. It covers an extensive list of compatibility codes including WB27X10388. The fast shipping ensures you can get your appliance back online quickly.
Pros
- Exceeds OEM requirements
- Ships fast
- Universal replacement
- 5 pieces included
- High rating
Cons
- Check model fit
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Users appreciate the broad compatibility list which simplifies finding a match. It is a reliable line fuse suitable for protecting against electrical faults. The ceramic body adds safety and durability for long-term use.
The large compatibility list is useful for obscure models but verify carefully. The 5-pack provides a small buffer of spares. Overall, it delivers on its promise of fast and flexible replacement options.
Ideal for urgent repairs, this set ships fast to get you back to work. The robust build ensures it holds up against common electrical issues. It serves as a versatile backup for various microwave brands.
Broad Compatibility
Replaces part numbers including WB27X10388, WB27X10740, and many others.
Exceeds OEM
Guaranteed to exceed original equipment manufacturer requirements for quality.
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Buying Guide – How to Choose the Best 20A 250V Ceramic Fuses for Microwave Ovens
Selecting the right replacement fuse is critical for microwave safety and functionality. Consider these factors to ensure the new component matches your appliance requirements perfectly.
Amperage Rating
Amperage determines how much current the fuse can handle before blowing. Using a fuse with too high am rating can damage internal components, while one too low will blow unnecessarily. For most household microwaves, 20A is the standard specification.
Always check your old fuse or user manual to confirm the exact amperage needed before purchasing a replacement.
Voltage Rating
The voltage rating indicates the maximum voltage the fuse can safely interrupt. Using a fuse with too low voltage rating can lead to explosion or failure. For microwaves, 250V is the common requirement to ensure safety.
Verify the voltage on your existing fuse matches the new one to prevent electrical hazards.
Fuse Type
Microwaves require slow-blow fuses to handle temporary power surges during startup. Standard fast-blow fuses may blow immediately upon turn-on causing operational issues. Always choose a slow-blow or time-delay fuse specifically for this appliance.
Look for 'Slow-Blow' or 'Time Delay' labels on the packaging to confirm compatibility.
Dimensions
Physical dimensions must match the holder to fit correctly. The standard size for microwave fuses is often 6x30mm. A mismatch here can prevent installation or lead to poor contact.
Measure your existing fuse carefully and compare it to the product specifications before buying.
Material Quality
High-quality ceramic bodies provide better heat resistance and insulation than plastic. Look for internal quartz sand filling which prevents dangerous arcs from forming during failure. This is a key safety feature for high-power appliances.
Choose fuses with ceramic tubes and sand filling to reduce fire risk during failure.
Compatibility
While universal fits are common, check for specific part numbers like WB27X10388. Manufacturers like GE, Whirlpool, and Kenmore often share parts but labels vary. Confirming compatibility with your specific brand avoids guesswork.
Cross-reference the part numbers listed on the product page with your appliance manual.
Pack Size
Buying in bulk packs offers better value and ensures spares are available. A single fuse is usually sufficient for one repair but extra units are convenient. Consider how many you need based on your repair history.
Evaluate the pack size to balance cost savings with actual repair requirements.
Safety Certifications
Certifications like CSA ensure the product meets established safety standards. Certified products have been tested for durability and fire safety. This is a vital factor for electrical components in household appliances.
Look for safety marks on the product to ensure reliability and compliance.
How to Use and Care for Your 20A 250V Ceramic Fuses for Microwave Ovens
To install a replacement fuse, first disconnect the microwave from the power outlet completely. Locate the fuse holder which is usually found near the power cord entry point on the chassis. Remove the old fuse gently and insert the new one ensuring it fits snugly in the holder.
Before replacing the fuse investigate why it blew to avoid repeated failure. Check for issues like a faulty magnetron high voltage diode or cooling fan motor. Simply swapping the fuse without fixing the root cause may lead to another blown fuse soon.
Store spare fuses in a cool dry place inside a protective case. Avoid handling them with dirty hands to prevent corrosion on the contacts. Always verify your appliance specifications before installing any new electrical component.
Frequently Asked Questions
What does a microwave fuse protect?
A microwave fuse acts as a safety device that cuts power during overheating overcurrent or power surges. It protects the internal circuitry from electrical faults that could cause fires or permanent damage. Without it the appliance could suffer severe internal failures.
Can I use a regular fuse instead?
No you should not use a standard fast-blow fuse. Microwaves require slow-blow fuses to handle high inrush currents at startup. A regular fuse will blow immediately upon turning on the microwave causing it to stop working.
How do I know which fuse to buy?
Check the amperage voltage and dimensions printed on the old fuse. Also verify the part number listed in your microwave manual. If your old fuse is unreadable use the appliance model number to look up compatible replacements online.
Why does my new fuse keep blowing?
If the fuse keeps blowing there is likely an underlying issue like a faulty magnetron or wiring short. Simply replacing the fuse repeatedly will not fix the root cause. Inspect other components or consult a professional technician for diagnosis.
Are ceramic fuses safer than glass?
Yes ceramic fuses with sand filling are generally safer. They prevent dangerous arcs and glass fragments when the fuse blows. This reduces the risk of fire and injury compared to standard glass tube fuses in high-power appliances.
Can I replace the fuse myself?
Yes replacing a microwave fuse is a simple DIY task for those comfortable with basic repairs. Always unplug the microwave before starting and wear gloves to prevent shock. If unsure consult a qualified professional to ensure safety.
How long do these fuses last?
A high-quality ceramic fuse should last the life of the microwave under normal conditions. If it blows prematurely it indicates an electrical fault rather than wear. Properly functioning appliances rarely need fuse replacement.
What is the difference between OEM and aftermarket?
OEM fuses are made by the original manufacturer while aftermarket are third-party replacements. Aftermarket fuses can offer better value while maintaining similar safety standards. Just ensure they match the exact specifications of your original fuse.
Final Thoughts on Choosing the Best 20A 250V Ceramic Fuses for Microwave Ovens
We reviewed ten top-rated ceramic fuses designed to protect your microwave from electrical faults. Each option offers reliable performance with specific strengths like bulk packaging or certifications. Choosing the right one depends on your specific appliance model and repair needs.
Prioritize safety by selecting fuses with quartz sand filling and slow-blow design. Ensure compatibility with your microwave brand to avoid fit issues or premature blowing. A proper replacement ensures your appliance operates safely and extends its lifespan.
Remember to verify current prices and availability as they may change frequently. Check your existing fuse specifications carefully before purchasing to guarantee a perfect match. With the right replacement you can restore your microwave quickly and affordably.