5-Pack 20 amp Microwave Fuse 20a 250v
4.5Editor score
Affordable 5-pack value
Wide brand compatibility
Durable ceramic construction
In this guide
Microwave ovens rely on high-voltage components to function correctly and safely. A critical safety component is the ceramic fuse which protects the circuitry from electrical surges and overloads that could cause damage or fire hazards.
We evaluated ten highly rated 20 amp 250 volt ceramic fuses based on build quality, compatibility, and user feedback. Our comparison focuses on slow-blow designs that handle inrush currents without nuisance tripping during normal operation cycles.
Each selection below highlights specific features, pros, and cons to help you find the right match for your appliance. Please note that product availability and pricing may change over time so verify details before purchasing.
Top 3 Picks for Best 20A 250V Ceramic Fuses for Microwave Ovens
BOJACK Microwave Fuse 20a Ceramic Fuse 20 Amp 250V Slow-Blow
4.6Editor score
High quality slow-blow design
Compatible with GE models
6×30 mm dimensions
BlueStars Upgraded 5-Pack WB27X10388 20A 20 Amp 250V Ceramic Microwave Fuse
4.5Editor score
Lifetime protection warranty
High-purity quartz sand
Upgraded safety features
Top 10 Best 20A 250V Ceramic Fuses for Microwave Ovens in 2026 Compared
The following table provides a side-by-side overview of all ten selected fuses including their key specifications and compatibility details to streamline your decision-making process.
ProductsSpecificationsEditor scorePrice
Editor's Choice
BOJACK Microwave Fuse 20a Ceramic Fuse
20 Amp 250V Rating
6×30 mm Size
Slow-Blow Type
Ceramic Body
4.6Editor score
Editor's Choice
Frienda 20 Pcs Microwave Fuse
20 Amp 250V Rating
6.35×30 mm Size
Slow Acting Blow
Sand Filled Tube
4.7Editor score
Best Premium
HiQltyla 20A 250V Microwave Fuse
20 Amp 250V Rating
6×30 mm Size
Slow-Blow Design
Quartz Sand Filled
4.6Editor score
BlueStars Upgraded 5-Pack WB27X10388
20 Amp 250V Rating
6×30 mm Size
Slow-Blow Type
High Purity Sand
4.5Editor score
5-Pack 20 amp Microwave Fuse 20a 250v
20 Amp 250V Rating
6×30 mm Size
Slow-Blow Type
Ceramic Construction
4.5Editor score
Microwave Fuse – 20 Amp 250V Ceramic Slow-Blow
20 Amp 250V Rating
6×32 mm Size
Slow-Blow Type
Universal Fit
4.4Editor score
(Pack of 10) 20 Amp 250V Microwave Fuse Slow-Blow
20 Amp 250V Rating
6×30 mm Size
Slow-Blow Time Delay
Quartz Sand Filled
4.6Editor score
BOJACK Microwave Fuse 20AL250V 6x30mm
20 Amp 250V Rating
6×30 mm Size
Slow-Blow Time Delay
Plastic Storage Case
4.6Editor score
Litoexpe 20-Pack 20A 250V Ceramic Time Delay Fuses
20 Amp 250V Rating
6×30 mm Size
Time Delay Fuses
Carrying Case Included
4.7Editor score
(Pack of 5) Microwave Replacement Fuse 20A 250V Ceramic
20 Amp 250V Rating
Universal Fit
Fast Blow Microwave
OEM Standards
4.7Editor score
1. BOJACK Microwave Fuse – Best Overall 20A 250V Ceramic Fuse for Microwave Ovens
BOJACK Microwave Fuse 20a Ceramic Fuse
6×30 mm dimensions
20 Amp rating
250V rating
Slow-Blow design
The BOJACK Microwave Fuse stands out as a top choice for homeowners seeking a reliable replacement for their microwave oven fuses. With a 4.6 star rating from users, it offers a proven track record of performance and durability in protecting sensitive microwave circuitry from electrical faults.
Pros
- Direct replacement for common models
- High quality slow-blow technology
- Compatible with GE microwaves
- Sturdy ceramic tube body
- Affordable price point
Cons
- Single unit packaging only
- Verify size before purchase
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This fuse features a slow-blow design specifically engineered to handle the temporary high inrush current that occurs when a microwave starts up. This prevents nuisance blowing during normal operation while still providing critical protection against sustained overloads or short circuits that could damage the unit.
While it is an aftermarket replacement product, it meets the necessary specifications to replace part number WB27X10388 and other common fuse types found in many major brands. The only minor limitation is that it comes as a single unit, so having a spare on hand is recommended for future repairs.
If you need a trustworthy and effective fuse to restore your microwave to working condition without spending a fortune, this option is highly recommended. Its compatibility with GE models and robust construction make it an excellent starting point for most DIY repair scenarios.
Superior Slow-Blow Performance
The slow-blow design ensures the fuse does not trip during the initial power surge, providing reliable operation during standard cooking cycles.
Wide Brand Compatibility
This fuse works seamlessly with GE microwaves and serves as a universal replacement for various other major appliance brands.
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2. Frienda 20 Pcs Microwave Fuse – Best Value for Multiple Replacements
Frienda 20 Pcs Microwave Fuse
20 Amp rating
250V rating
6.35×30 mm size
20 piece pack
The Frienda 20-piece pack offers exceptional value for those who need multiple fuses for various appliances or wish to keep spares on hand. With a high 4.7 rating, users appreciate the durability and safety features of these ceramic fuses designed for microwave oven protection.
Pros
- Large 20-piece quantity
- Compatible with GE and Kenmore
- Filled with protective sand
- Resists surge current effectively
- Safe ceramic tube construction
Cons
- Packaging quality varies
- Check dimensions carefully
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These fuses are filled with sand which prevents glass fragments from scattering if the fuse blows. This safety feature is crucial for avoiding injury during maintenance. The slow-acting blow design ensures that short current spikes do not unnecessarily interrupt your microwave operation.
The only caveat is that you should always verify the dimensions and ratings match your existing fuse before purchasing since aftermarket products can sometimes vary slightly. Ensuring a proper fit is essential for electrical safety and proper appliance function.
For anyone looking to stock up on reliable replacement parts at a reasonable cost, this bulk pack is an intelligent choice. It provides peace of mind knowing you have replacements available whenever a fuse blows unexpectedly.
Enhanced Safety Features
Sand filling inside the ceramic tube prevents dangerous glass shards from scattering if the fuse blows during operation.
Bulk Pack Convenience
Getting twenty pieces ensures you have spares for future repairs or multiple devices without frequent reordering.
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3. HiQltyla 20A 250V Microwave Fuse – Best Compact Two-Pack Option
HiQltyla 20A 250V Microwave Fuse
20 Amp rating
250V rating
6×30 mm dimensions
2-piece pack
HiQltyla offers a solid two-pack option that balances affordability with quality assurance. The fuses have passed CSA safety certification which adds a layer of trust regarding their electrical properties and performance in high-voltage applications like microwave ovens.
Pros
- Passed CSA safety certification
- Quartz sand filled for safety
- 1-year warranty included
- Slow-blow circuit protection
- Affordable small package
Cons
- Small package may not suffice
- Verify model compatibility first
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The ceramic tube is filled with quartz sand which prevents arcs from pulling during the fusing process. This reduces the risk of explosion or fire compared to glass fuses. The slow-blow design ensures reliable protection without interfering with normal startup cycles.
While a two-pack is convenient for a single repair, it might not be enough for households with multiple microwaves or those who like to keep spares for future issues. Additionally, checking your current fuse size is vital as 6x30mm is standard but not universal.
This product is ideal for users seeking a certified safe replacement that fits standard microwave fuse slots without breaking the bank. It provides a reliable safety net against overloads and short circuits effectively.
Certified Safety Standards
All electrical properties have passed CSA safety certification ensuring reliable performance and safe operation in high-voltage environments.
Arc Prevention Technology
Quartz sand filling inside the tube prevents arc pulling during fusing which reduces explosion risk and enhances overall safety.
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4. BlueStars Upgraded 5-Pack – Best Premium Lifetime Warranty Option
BlueStars Upgraded 5-Pack WB27X10388
20 Amp rating
250V rating
6×30 mm dimensions
Lifetime protection
BlueStars brings a premium touch to microwave fuse replacement with a dedicated 5-pack and a lifetime protection warranty. This commitment to customer satisfaction and product longevity makes it a top choice for those who want assurance beyond the standard purchase.
Pros
- Lifetime protection warranty
- High-purity quartz sand fill
- Wear-resistant ceramic body
- Wide brand compatibility
- Detailed installation guidance
Cons
- Premium packaging may cost more
- Verify part number before purchase
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The fuse features high-purity quartz sand inside which maintains good insulation and prevents overcurrent from breaking through. The ceramic tube body and end caps are designed to be wear-resistant ensuring a sturdy and long-lasting construction that can withstand repeated heat cycles.
It is important to note that while the fuse fits many models, you should check your OE part number to ensure a perfect match. If the new fuse continues to blow immediately, the issue likely lies with faulty wiring or other components rather than the fuse itself.
This option is best for users who value long-term reliability and excellent customer support. The detailed guidance on why fuses blow helps troubleshoot underlying issues and ensures safer appliance use moving forward.
Lifetime Protection Guarantee
Enjoy reliable performance with our lifetime protection ensuring that your product will always be covered for any defects or issues.
Superior Insulation
High-purity quartz sand maintains good insulation preventing overcurrent from breaking through and reconnecting the circuit to damage the load.
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5. 5-Pack 20 Amp Fuse – Best Budget Friendly Multi-Pack
5-Pack 20 amp Microwave Fuse 20a 250v
20 Amp rating
250V rating
6×30 mm dimensions
5-piece pack
This five-pack option delivers exceptional value for budget-conscious consumers who need a reliable replacement without compromising on safety. With a solid 4.5 rating, it proves that cost-effective solutions can still meet essential standards for microwave protection.
Pros
- Highly affordable per unit
- Direct replacement for WB27X10388
- Compatible with most brands
- Heavy-duty ceramic construction
- Simple installation process
Cons
- Basic packaging design
- Verify size before ordering
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The fuses are made with heavy-duty ceramic tubes and high-strength end caps ensuring durability. They are designed to disconnect power quickly during overheating or power surges protecting internal circuit components from further damage or catastrophic failure.
While the packaging is straightforward, the product itself is robust and easy to install. Users are advised to turn off power before replacement and confirm dimensions match their old fuse since compatibility varies slightly across different model years.
For anyone needing a quick fix or multiple replacements at the lowest price point, this pack is an excellent choice. It restores service life to your microwave affordably and effectively.
Affordable Bulk Savings
Purchasing a five-pack reduces the cost per unit significantly allowing you to save money while keeping spares on hand.
Direct Compatibility
These fuses act as a direct replacement for WB27X10388 and many other part numbers ensuring a precise fit for your model.
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6. Microwave Fuse 6-Pack – Best Universal Fit for Multiple Brands
Microwave Fuse – 20 Amp 250V Ceramic Slow-Blow
20 Amp rating
250V rating
6×32 mm size
6-piece pack
This 6-pack option stands out for its universal fit across a wide range of microwave brands including GE Whirlpool Kenmore and Hotpoint. The time-delay design handles temporary high inrush currents safely preventing nuisance tripping during startup.
Pros
- Universal fit for major brands
- Time-delay surge protection
- Premium ceramic construction
- Safe for DIY installation
- Bulk quantity savings
Cons
- 6x32mm dimensions differ slightly
- Check fuse holder alignment
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The premium ceramic construction ensures excellent heat resistance and electrical insulation making it reliable for long-term use. With six units included, you have plenty of spares for future repairs or other household appliances that may need similar protection.
One note of caution is the dimensions which are listed as 6mm x 32mm rather than the standard 30mm. Users should verify their fuse holder spacing to ensure the extra length does not cause installation issues or loose connections.
For households with multiple microwaves or those who want a bulk supply for maintenance needs, this pack is a strong contender. Its safety-first design makes it ideal for protecting sensitive appliance components.
Universal Brand Compatibility
This fuse is designed to directly replace GE part numbers while fitting universally across Whirlpool Kenmore and other major brands.
Time-Delay Technology
Engineered to handle temporary high inrush current when microwaves start up while reliably interrupting sustained overloads.
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7. 10-Pack Slow-Blow Fuses – Best Bulk Supply for Repair Shops
(Pack of 10) 20 Amp 250V Microwave Fuse Slow-Blow
20 Amp rating
250V rating
6×30 mm size
10-piece pack
For repair professionals or serious DIYers, this 10-pack provides a substantial supply of fuses at a competitive rate. The high 4.6 rating indicates that users are satisfied with the quality and reliability of these ceramic fuses for microwave applications.
Pros
- Excellent bulk quantity value
- Nicked plated brass ends
- Quartz sand filled tube
- Universal replacement fit
- Durable alloy body
Cons
- Large package for casual users
- Verify model compatibility
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Constructed with a ceramic tube, alloy, nickel-plated brass, and quartz sand these fuses offer robust protection against overcurrent. The slow-blow design ensures that temporary surges do not cause unnecessary interruptions during normal microwave operation cycles.
While this quantity is fantastic for stocking up, it might be more than needed for a single household. Ensure you store them in a dry place to maintain their integrity over time. Always check your current fuse part number before buying to guarantee a perfect match.
This bulk pack is ideal for keeping your toolbox or pantry ready for any electrical repairs. It saves time and money compared to buying individual units every time a fuse blows unexpectedly.
Premium Material Build
The combination of ceramic tube alloy nickel plated brass and quartz sand ensures durability and reliable electrical protection.
Massive Bulk Savings
Buying ten units at once reduces per unit cost significantly providing a long-term supply for various repair needs.
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8. BOJACK 20-Pack Time-Delay Fuses – Best Long-Term Stock Solution
BOJACK Microwave Fuse 20AL250V 6x30mm
20 Amp rating
250V rating
6×30 mm dimensions
20-piece pack
This massive 20-piece pack from BOJACK offers the most comprehensive stock solution available. With a consistent 4.6 rating, users trust the quality of these slow-blow ceramic fuses for protecting high-power appliances like microwaves from electrical faults.
Pros
- Huge 20-piece quantity
- Plastic storage case included
- Slow-blow ceramic quality
- Reliable protection against surges
- Great for multiple appliances
Cons
- Huge quantity for most users
- Check voltage requirements first
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Packed in a convenient plastic storage case these fuses stay organized and protected from damage. The slow-blow time-delay design is essential for handling inrush currents during startup without blowing prematurely which ensures reliable appliance operation.
While having twenty units is advantageous for heavy users or repair shops it might be excessive for a single homeowner. Consider your usage needs carefully before committing to such a large bulk purchase to avoid unnecessary storage space usage.
For those who need to keep a large supply for multiple repairs or different devices, this is an outstanding option. The storage case adds significant value by keeping everything organized and ready to use when needed.
Organized Storage
Included plastic storage case keeps all 20 fuses organized and protected from damage or loss when stored in your toolbox.
Massive Bulk Value
Purchasing twenty units at once drastically reduces the cost per unit and ensures you have fuses for every eventual appliance failure.
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9. Litoexpe 20-Pack Fuses – Best Bulk Kit with Carrying Case
Litoexpe 20-Pack 20A 250V Ceramic Time Delay Fuses
20 Amp rating
250V rating
6×30 mm dimensions
Carrying case
The Litoexpe 20-pack provides a robust solution for keeping spare fuses on hand for any emergency repair situation. With a strong 4.7 rating from users it highlights the high quality and safety performance of these ceramic fuses for microwave applications.
Pros
- Large 20-piece quantity
- Ceramic tube construction
- Carrying case included
- Reduces arc flashover risk
- 30-day return guarantee
Cons
- High volume for single use
- Verify model before ordering
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Constructed from ceramic tube and nickel plated brass these fuses are filled with sand to prevent arc flashover. This reduces the risk of bursting and hot metal spray compared to glass fuses providing an extra layer of safety during severe overloads.
The inclusion of a carrying case makes these fuses easy to transport and store safely. However the large volume may be too much for a casual user looking for a single replacement so consider if you have multiple appliances needing this part.
For those needing a reliable backup stock with guaranteed customer satisfaction this kit is highly recommended. The 30-day return and replacement service adds to the confidence in your purchase and ensures you get exactly what you need.
Safety Through Ceramic Design
Ceramic body filled with sand prevents arc flashover and reduces burst risk significantly more than standard glass body fuses.
Portable Storage Solution
Carrying case keeps your fuses organized and protected from damage making it easy to transport them to repair sites or store safely.
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10. 5-Pack Universal Replacement Fuses – Best Fast Shipping Replacement
(Pack of 5) Microwave Replacement Fuse 20A 250V Ceramic
20 Amp rating
250V rating
Universal fit
5-piece pack
This five-pack option ensures you have enough replacements for multiple appliances or future needs. With a high 4.7 rating it is trusted by many users for its reliability and wide compatibility with various microwave brands and models.
Pros
- Fits OEM standards
- Wide part number compatibility
- Fast shipping availability
- Ceramic line fuse design
- 5-pack convenience
Cons
- Fast blow type for some models
- Verify slow-blow need
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The fuse is designed to exceed OEM requirements and fits a vast range of part numbers. It is in stock and ships fast ensuring minimal downtime for your kitchen appliance when a fuse unexpectedly blows during normal use.
One thing to note is that this listing mentions a fast blow fuse which might differ from the slow-blow design required by some microwave circuits. Always check your original fuse specification to avoid nuisance tripping during normal startup cycles.
For quick replacements and broad compatibility this pack offers excellent value and speed. It is a dependable choice for restoring power to your microwave efficiently and safely.
OEM Standard Compliance
These fuses are guaranteed to exceed OEM requirements ensuring precise fit and reliable performance across various major brands.
Wide Part Number Match
Compatible with dozens of part numbers including WB27X10388 making it a versatile replacement for many different appliance models.
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Buying Guide – How to Choose the Best 20A 250V Ceramic Fuses for Microwave Ovens
Selecting the right fuse for your microwave oven requires attention to specific electrical ratings and physical dimensions to ensure safety and proper function.
Fuse Current Rating
The current rating indicates the maximum current the fuse can carry without blowing. For microwave ovens, a 20 amp rating is standard to handle the high current draw of the magnetron and other components safely without unnecessary interruptions.
Always match the amp rating exactly to your old fuse. Using a higher rating could prevent the fuse from blowing during an overload potentially damaging your microwave or causing a fire hazard.
Voltage Rating
The voltage rating specifies the maximum voltage at which the fuse can safely interrupt a circuit. Most household microwave fuses require a 250 volt rating to withstand the internal high-voltage components safely.
Ensure the fuse you purchase is rated for 250V. Lower voltage ratings might not interrupt the circuit safely under fault conditions which can lead to dangerous electrical arcs.
Physical Dimensions
Physical size is crucial for fitting into the fuse holder. Standard microwave fuses are often 6mm in diameter and 30mm in length but some models may have slight variations. Always measure your old fuse before purchasing.
Incorrect dimensions can lead to a loose connection or inability to install the fuse at all. Double-check the length and diameter against your existing part to avoid compatibility issues.
Time Delay vs Fast Blow
Microwave ovens typically use slow-blow or time-delay fuses to handle temporary high inrush currents during startup. A fast blow fuse might open prematurely during normal operation causing unnecessary inconvenience.
Check your fuse specifications carefully to see if it is slow-blow or fast-blow. Using the correct type ensures the fuse only blows during genuine faults rather than normal appliance behavior.
Material Quality
Ceramic fuses are preferred over glass for microwave applications because they are better at handling heat and preventing arc flash. Look for ceramic tubes filled with quartz sand for enhanced safety and reliability.
A high-quality ceramic body ensures the fuse can withstand the internal environment of the microwave without degrading over time. Avoid cheap alternatives that may not provide adequate protection.
Compatibility with Brands
Many fuses are designed to replace specific OEM part numbers like WB27X10388. Verify that the aftermarket fuse lists compatibility with your specific microwave brand and model to ensure a correct replacement.
Most universal fuses work with GE Whirlpool Kenmore and other major brands but checking the listing details prevents confusion. Ensure the product explicitly mentions compatibility with your model.
Safety Certifications
Look for fuses that have passed safety certifications like CSA or UL. These marks indicate that the product has been tested for electrical safety and performance standards.
Certified fuses provide peace of mind that they are safe for use in high-voltage appliances. Avoid unmarked or uncertified products to ensure electrical safety in your home.
Packaging Quantity
Fuses are available in single packs or bulk packages of 5 10 or 20 units. Buying in bulk can be more cost-effective if you need replacements for multiple appliances or want to keep spares.
For most households a 5-pack is a good balance between cost and convenience. Consider how many units you realistically need to avoid unnecessary storage of unused components.
How to Use and Care for Your 20A 250V Ceramic Fuses for Microwave Ovens
Always unplug the microwave before attempting any repairs to avoid electrical shock. Ensure the appliance has cooled down completely before opening any panels or accessing internal components to prevent burns or other injuries.
Locate the fuse holder which is typically found near the power entry point inside the microwave. Remove the old fuse carefully and check if it is blown by inspecting the filament or continuity. Install the new fuse securely making sure it fits snugly in the holder.
Regularly inspect your microwave for signs of wear or damage that might indicate future fuse issues. Keep the exterior and vent areas clean to prevent overheating which can strain electrical components and cause fuses to blow prematurely.
Frequently Asked Questions
How do I know if my microwave fuse is blown?
Inspect the fuse visually to see if the metal filament inside is broken or if there is discoloration. If you have a multimeter test continuity across the ends of the fuse. If there is no continuity the fuse is blown and needs replacement immediately.
Can I use a higher amp fuse to prevent it from blowing?
Never use a higher amp fuse than recommended because it defeats the safety purpose of the fuse. A higher rated fuse may not blow during an overload causing damage to the microwave or creating a fire hazard. Always match the original specifications exactly.
Why did my fuse blow right after I replaced it?
If the new fuse blows immediately it indicates an underlying electrical issue such as a short circuit in the wiring or a faulty component like the magnetron or diode. Check these parts before replacing the fuse again to avoid repeated failures.
Are ceramic fuses safer than glass fuses for microwaves?
Yes ceramic fuses are safer because they can handle higher heat and are filled with sand to prevent arc flash during faults. Glass fuses can shatter and project hot shards which increases the risk of injury or fire compared to the robust ceramic construction.
How long does a microwave fuse typically last?
A well-made ceramic fuse can last for many years under normal conditions. However frequent power surges or electrical faults may cause it to blow sooner. Replace it promptly with a quality unit to maintain appliance safety.
Do I need to worry about voltage ratings when buying a fuse?
Yes the voltage rating must be at least equal to the supply voltage. For microwaves 250 volts is the standard. Using a lower voltage fuse could lead to unsafe arc formation during a fault which compromises safety and reliability.
Where can I find the correct part number for my microwave fuse?
Check the manual or the label inside the microwave door for the specific part number. You can also remove the old fuse to see the printed numbers. Search these numbers online or consult customer support for the exact compatible replacement.
Final Thoughts on Choosing the Best 20A 250V Ceramic Fuses for Microwave Ovens
Choosing the right fuse is essential for maintaining the safety and functionality of your microwave oven. The options highlighted above offer reliable protection against electrical faults and ensure your appliance operates safely without unnecessary interruptions.
Prioritize models that match your fuse specifications exactly in terms of amp rating voltage and dimensions. Opt for slow-blow designs with ceramic construction to ensure durability and safety in high-voltage environments like your kitchen.
Always verify the current price and availability before purchasing to ensure you get the best value. With the correct replacement fuse your microwave can return to full service quickly and safely with minimal downtime.