Frienda 20 Pcs Microwave Fuse 20a 250v Slow-Blow Ceramic
4.7Editor score
20 piece value pack
Filled with safety sand
Compatible with Kenmore and GE
In this guide
Microwave ovens rely on specific safety components to operate correctly and prevent electrical hazards. One of the most critical parts is the high voltage fuse that protects the internal circuitry from overloads and surges during normal operation cycles.
We compared ten top rated ceramic fuses based on compatibility, build quality, and safety certifications. Each product was evaluated for its slow blow design, dimensions, and ability to handle the unique current demands of modern microwave oven systems.
Every pick includes detailed specifications and real user feedback to help you choose the right replacement. Please note that availability and pricing can change quickly, so verify the details on the product page before placing your order.
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
Compatible with GE WB27X10388
High quality slow-blow design
Standard 6×30 mm dimensions
BlueStars Upgraded 5-Pack WB27X10388 20A 20 Amp 250V Ceramic Microwave Fuse
4.5Editor score
High-purity quartz sand inside
Wear-resistant ceramic tube
Lifetime protection guarantee
Top 10 Best 20A 250V Ceramic Fuses for Microwave Ovens in 2026 Compared
The following comparison table details the key specifications for each of the top ten ceramic fuses selected for this guide. Use this data to match the required dimensions, voltage, and compatibility with your specific microwave model.
ProductsSpecificationsEditor scorePrice
Editor's Choice
BOJACK Microwave Fuse 20a
20A 250V Slow-Blow
6×30 mm Dimensions
Compatible with GE WB27X10388
High Quality Ceramic Tube
4.6Editor score
Editor's Choice
Frienda 20 Pcs Microwave Fuse
20A 250V Slow-Blow
6.35 x 30 mm Size
20 Piece Value Pack
Safe Sand Filled Design
4.7Editor score
Best Premium
HiQltyla 20A 250V Microwave Fuse
20A 250V Slow-Blow
6x30mm Cartridge Size
CSA Safety Certified
Quartz Sand Filled Tube
4.6Editor score
BlueStars Upgraded 5-Pack
20A 250V Slow-Blow
6 x 30 mm Dimensions
High-Purity Quartz Sand
Universal Brand Compatibility
4.5Editor score
5-Pack 20 amp Microwave Fuse
20A 250V Slow-Blow
0.24 x 1.2 inch Size
Heavy-Duty Ceramic Construction
Direct Replacement for Most Models
4.5Editor score
Microwave Fuse 20 Amp 250V
20A 250V Slow-Blow
6mm x 32mm Size
Direct Replacement for GE
6-PACK for Future Needs
4.4Editor score
(Pack of 10) 20 Amp 250V
20A 250V Slow-Blow
6x30mm Dimensions
Quartz Sand Filled
10 Piece Pack
4.6Editor score
BOJACK Microwave Fuse 20AL250V
20A 250V Slow-Blow
6×30 mm Dimensions
Time-Delay Ceramic Tube
20 Piece Plastic Case
4.6Editor score
Litoexpe 20-Pack 20A 250V
20A 250V Slow-Blow
6 x 30mm Size
Nickel Plated Brass Ends
Carrying Case Included
4.7Editor score
(Pack of 5) Microwave Replacement Fuse
20A 250V Ceramic
OEM Standards Exceeded
Multiple Part Number Replaces
5 Pack Value
4.7Editor score
1. BOJACK Microwave Fuse 20a – Best Overall Choice
BOJACK Microwave Fuse 20a
20A 250V Rating
6×30 mm Dimensions
Slow-Blow Ceramic Type
GE WB27X10388 Compatible
The BOJACK Microwave Fuse stands out as a reliable safety component for microwave repair. It holds a strong customer rating and features a slow-blow design that protects sensitive circuitry from surges.
Pros
- High quality slow-blow design
- Excellent build quality
- Compatible with multiple brands
- Affordable price point
- Safe ceramic construction
Cons
- Single unit pack
- May require size verification
We may earn a commission when you buy through this link, at no additional cost to you.
This fuse is built with high quality materials to ensure durability. Its 20A 250V rating matches the needs of most standard microwaves. The ceramic body provides better insulation than glass alternatives.
While it is sold as a single unit, the quality justifies the cost. Users should verify their existing fuse dimensions to ensure the 6×30 mm size fits their specific model perfectly.
This is an ideal choice for homeowners looking for a dependable replacement part that meets safety standards without excessive expense or complicated installation requirements.
Superior Ceramic Construction
The ceramic tube body offers better heat resistance and insulation compared to glass fuses, reducing the risk of arc flash during a fault.
Universal Compatibility
Designed to replace GE WB27X10388 and other universal models, making it a versatile choice for many common microwave brands.
We may earn a commission when you buy through this link, at no additional cost to you.
2. Frienda 20 Pcs Microwave Fuse – Best Value for Bulk
Frienda 20 Pcs Microwave Fuse
20A 250V Slow-Blow
20 Piece Count
6.35 x 30 mm
Sand Filled Safety
The Frienda 20 Pcs Microwave Fuse offers exceptional value for those who prefer keeping spares on hand. This pack includes twenty units that are slow-blow ceramic type rated for 20A and 250V.
Pros
- Great bulk value
- Safe sand filled design
- High rating score
- Compatible with GE and Kenmore
- Long term storage ready
Cons
- Plastic packaging may vary
- Not original OEM
We may earn a commission when you buy through this link, at no additional cost to you.
Each fuse is filled with sand to ensure safety during a blowout event. This feature prevents glass fragments and reduces fire risk. The packaging is sufficient for daily replacement needs or small workshops.
While it is an aftermarket product, the build quality meets standard expectations. Always check size and voltage carefully before purchase to avoid compatibility issues with your specific appliance model.
Ideal for repair professionals or families with multiple appliances, this option provides peace of mind with a large supply of reliable replacement fuses for future repairs.
Safety Filled Tube
The ceramic tube fuse is filled with sand to prevent glass fragments and fire risks when the fuse blows out during an electrical fault.
Versatile Replacement
Compatible with GE WB27X10388 and Kenmore microwaves, ensuring a fit for many popular household appliance models.
We may earn a commission when you buy through this link, at no additional cost to you.
3. BlueStars Upgraded 5-Pack – Best Quality Pack
BlueStars Upgraded 5-Pack
20A 250V Rating
High-Purity Quartz Sand
Wear-Resistant Ceramic
5-Pack Bundle
BlueStars delivers a robust solution with their upgraded 5-Pack ceramic microwave fuse. These fuses feature a ceramic tube body filled with high-purity quartz sand to maintain insulation and prevent circuit reconnection after a fault.
Pros
- High purity quartz sand fill
- Lifetime protection guarantee
- Wear resistant tube
- Wide brand compatibility
- Easy to install
Cons
- Higher price than others
- Must verify part numbers
We may earn a commission when you buy through this link, at no additional cost to you.
The product offers a lifetime protection guarantee, showing the manufacturer's confidence in its durability. It fits various brands like GE, Whirlpool, and LG, making it a versatile choice for different household setups.
Installation is straightforward, but safety is paramount; always disconnect power before starting. Ensure the fuse matches the part number and dimensions of your original unit to avoid repeated failures.
For those prioritizing long-term reliability and customer support, this premium pack provides excellent value through its superior materials and comprehensive warranty coverage.
High-Purity Quartz Sand
High-purity quartz sand inside maintains good insulation and prevents overcurrent from breaking through the insulation layer and reconnecting the circuit.
Lifetime Protection
Enjoy reliable performance with lifetime protection, ensuring your product is covered for any defects or issues that may arise after purchase.
We may earn a commission when you buy through this link, at no additional cost to you.
4. HiQltyla 20A 250V – Best Safety Filled
HiQltyla 20A 250V
20A 250V Slow-Blow
Quartz Sand Filled
CSA Certified
6x30mm Dimensions
HiQltyla provides a 2-pack of slow-blow ceramic fuses designed specifically for microwave protection. Each fuse features a ceramic tube filled with quartz sand to prevent arc pull and ensure safer operation than glass alternatives.
Pros
- CSA safety certification
- High quality materials
- Slow-blow design
- 1 year warranty
- Safer than glass
Cons
- Only 2 pieces in pack
- Packaging may be basic
We may earn a commission when you buy through this link, at no additional cost to you.
These fuses are made of high quality materials and have passed CSA safety certification. The design ensures electrical properties remain stable and offers a longer service life for your appliance.
While the package only includes two units, the safety features make it a strong choice. Always confirm that your old fuse matches the 6x30mm dimensions and rating before installing any new fuse.
Recommended for users seeking a certified, safe replacement that prioritizes long service life and reliable electrical performance without breaking the bank.
CSA Safety Certified
All electrical properties have passed safety certification as CSA, ensuring a high level of quality and safety for your appliance.
Arc Prevention
Filled with quartz sand to prevent arc pull and explosions, making it safer than glass fuses that may contain air.
We may earn a commission when you buy through this link, at no additional cost to you.
5. 5-Pack 20 amp Microwave Fuse – Best Direct Replacement
5-Pack 20 amp Microwave Fuse
20A 250V Slow-Blow
0.24 x 1.2 inch
Heavy-Duty Ceramic
Universal Replacement
This 5-pack offers a direct replacement solution for common microwave brands. The 20A 250V slow-blow ceramic fuses are designed to match dimensions and protect against overheating and surges effectively.
Pros
- Fast and reliable safety
- Heavy-duty ceramic construction
- Direct replacement for GE
- Wear-resistant design
- Affordable option
Cons
- Check part numbers carefully
- No extra accessories
We may earn a commission when you buy through this link, at no additional cost to you.
Built with a heavy-duty ceramic tube and high-strength end caps, these fuses ensure stable operation and longevity. They provide reliable safety by disconnecting power during dangerous overcurrent situations quickly.
Installation is simple; just turn off power and swap the fuse. However, if the new fuse keeps blowing, check other faulty parts like the door interlock or cooling fan before blaming the fuse.
A great pick for homeowners needing a few spares, this option combines affordability with solid construction for dependable daily use.
Heavy-Duty Ceramic Tube
Made with a heavy-duty ceramic tube for excellent insulation and stability, ensuring long-lasting performance and wear resistance.
Universal Fit
Fully compatible with GE, Whirlpool, and Kenmore models, serving as a universal replacement for most microwave units.
We may earn a commission when you buy through this link, at no additional cost to you.
6. Microwave Fuse 20 Amp 250V – Best Slow-Blow Design
Microwave Fuse 20 Amp 250V
20A 250V Slow-Blow
6mm x 32mm Size
Direct Replacement
6-PACK Value
This microwave fuse uses a slow-blow design specifically engineered for appliance protection. It handles temporary high inrush current during startup while cutting power during sustained overloads to protect internal components.
Pros
- Engineered for inrush current
- Premium ceramic construction
- Universal fit for brands
- 6 pieces included
- Easy DIY installation
Cons
- Slightly larger dimensions
- Check old fuse length
We may earn a commission when you buy through this link, at no additional cost to you.
The construction is made of high-quality ceramic material offering excellent heat resistance. A bulk pack of 6 pieces saves time and money compared to buying single units or paying for service calls.
Always unplug the microwave before starting any work. Locate the fuse holder near the power entry and swap the old fuse for a new one to restore functionality quickly.
Ideal for DIYers who want guaranteed compatibility with Whirlpool and Kenmore brands while keeping spares for future needs at a reasonable price.
Premium Ceramic Material
Built with high-quality ceramic material that offers excellent heat resistance and electrical insulation for stable operation.
Direct Replacement
Designed to directly replace GE part # WB27X10388 and is universally compatible with a wide range of microwave brands.
We may earn a commission when you buy through this link, at no additional cost to you.
7. (Pack of 10) 20 Amp – Best Mid-Range Bulk
(Pack of 10) 20 Amp
20A 250V Rating
10 Piece Pack
Quartz Sand Filled
6x30mm Size
This pack includes ten 20A 250V slow-blow ceramic fuses designed for universal replacement. It features a body made of ceramic tube, alloy, and nickel plated brass to ensure durability and reliable connection.
Pros
- Nickel plated brass body
- Alloy and ceramic tube
- 10 pieces included
- Good circuit protection
- Compatible with many brands
Cons
- Check specific model fit
- Basic packaging
We may earn a commission when you buy through this link, at no additional cost to you.
The quartz sand filled design offers effective circuit over current protection. This makes it suitable for various electronic devices including high power loads like microwave ovens and power supplies.
With 10 pieces, you get a generous supply to cover immediate and future needs. Always verify that the 6x30mm dimensions match your specific fuse holder before making a purchase.
A practical choice for those needing a mid-range bulk pack that balances quality construction with a reasonable quantity for household repairs.
Durable Body Materials
Constructed with ceramic tube, alloy, and nickel plated brass for a sturdy body that ensures long service life and reliability.
Over Current Protection
Suitable for various electronic devices circuit over current protection, protecting your appliances from electrical damage.
We may earn a commission when you buy through this link, at no additional cost to you.
8. BOJACK Microwave Fuse 20AL250V – Best for Long Term Storage
BOJACK Microwave Fuse 20AL250V
20A 250V Slow-Blow
20 Piece Pack
Time-Delay Type
Plastic Storage Case
BOJACK offers a robust 20-piece pack of high quality slow-blow ceramic fuses. This set provides plenty of spares for frequent repairs or multi-unit homes needing reliable appliance maintenance solutions.
Pros
- High quality slow-blow design
- Plastic storage case included
- 20 piece quantity
- Consistent 6x30mm size
- Fits standard holders
Cons
- May be extra for most
- Price varies by pack
We may earn a commission when you buy through this link, at no additional cost to you.
Each fuse is a time-delay type rated 20A 250V with precise dimensions of 6x30mm. The packaging includes a plastic storage case to keep your fuses organized and protected when not in use.
This pack is a great option for keeping a spare ready for unexpected failures. Always verify the dimensions and rating match your original fuse to ensure proper circuit protection.
Ideal for users seeking a large quantity in one purchase, this package offers convenience and organization for all your microwave repair needs.
Organized Storage Case
Packed in a plastic storage case to keep your fuses organized and protected when not in use for better convenience.
Time-Delay Design
Time-delay fuses allow for temporary current surges while still protecting against sustained overloads and short circuits.
We may earn a commission when you buy through this link, at no additional cost to you.
9. Litoexpe 20-Pack – Best Bulk Kit
Litoexpe 20-Pack
20A 250V Slow-Blow
20 Piece Count
Carrying Case Included
Nickel Plated Brass
Litoexpe provides a 20-pack of time delay fuses with a carrying case for easy storage. The ceramic tube body is filled with sand to reduce arc flashover risk and prevent bursting during sudden overloads.
Pros
- Ceramic body with sand
- High amperage protection
- Reduced arc flashover
- Carrying case included
- Great for high power
Cons
- Check voltage requirements
- Basic instructions
We may earn a commission when you buy through this link, at no additional cost to you.
This fuse is great for high amperage and hi power loads like microwaves. It is designed to handle current draw fluctuations and prevent fire risks by reducing hot metal spray projection during failures.
With a 30-day return and replacement service, buyers can shop with confidence. It is important to confirm size, voltage, and current ratings before ordering to ensure the product matches your appliance.
An excellent bulk option for those needing a large supply of safe, durable fuses for various high power loads or repair projects.
Reduced Arc Flashover
Ceramic construction prevents arc flashover and reduces the risk of bursting compared to standard glass body fuses.
High Power Load Ready
Good for high amperage/Hi power loads such as motors, power tools, microwave ovens, and inverters.
We may earn a commission when you buy through this link, at no additional cost to you.
10. (Pack of 5) Microwave Replacement Fuse – Best OEM Match
(Pack of 5) Microwave Replacement Fuse
20A 250V Ceramic
5 Pack Value
Multiple Part Replacements
Exceeds OEM Requirements
This 5-pack of ceramic line fuses is compatible with many microwave models and exceeds OEM requirements. It replaces numerous part numbers such as WB27X10388 and 5304423383 to fit various appliance setups.
Pros
- Fits OEM standards
- Exceeds OEM requirements
- Replaces multiple parts
- Fast shipping
- Universal compatibility
Cons
- Check specific part numbers
- Not original brand
We may earn a commission when you buy through this link, at no additional cost to you.
Guaranteed to meet OEM standards, these fuses provide reliable protection and durability. They are designed for universal replacement and are compatible with most common microwave brands found in households.
The pack ships fast and is in stock, ensuring quick delivery for urgent repairs. Always confirm that the voltage and amperage match your existing fuse to avoid compatibility issues during installation.
A solid choice for those seeking an OEM-quality match without the premium price tag while ensuring high standards for their appliance repairs.
Fits OEM Standards
Guaranteed to exceed OEM requirements, ensuring a reliable fit and performance for your microwave appliance.
Universal Compatibility
Compatible and universal replacement for multiple part numbers and various microwave brands for easy selection.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best 20A 250V Ceramic Fuses for Microwave Ovens
Selecting the right fuse is crucial for maintaining the safety and functionality of your microwave oven. This guide outlines the essential factors to consider before making your purchase.
Voltage and Current Rating
Every fuse must match the exact voltage and current rating of your appliance. In this guide, all products are rated for 20A and 250V which is the standard for most microwave ovens.
Always verify your old fuse labels to ensure the new part meets or exceeds these ratings to prevent electrical hazards.
Dimensions and Size
The physical size of the fuse determines if it will fit into the holder. The standard size for these products is 6×30 mm or 0.24 x 1.2 inches.
Measure your existing fuse before ordering to confirm that the new part fits snugly without causing connection issues.
Slow-Blow vs Fast-Blow
Most microwave fuses are slow-blow types designed to handle temporary power surges during startup without blowing immediately.
Ensure you select a slow-blow fuse rather than a fast-blow one to avoid unnecessary replacement cycles and appliance interruptions.
Material and Safety Features
Ceramic fuses are generally safer than glass ones because they resist heat better and contain internal materials like quartz sand.
Look for fuses filled with sand to prevent glass shards or fire risks during a blowout event.
Compatibility with Brands
While universal fuses work for many models, it is important to check compatibility with specific brands like GE, Whirlpool, and Kenmore.
Verify that the product description lists your microwave brand or part number to ensure a proper fit.
Package Quantity
Fuses are available in single units, packs of five, or bulk packs of twenty.
Consider buying a bulk pack if you anticipate future repairs or own multiple appliances to save money in the long run.
Safety Certifications
Certifications like CSA indicate that the fuse meets specific safety standards for electrical components.
Choosing certified products ensures that the fuse has been tested for reliability and safety performance.
How to Use and Care for Your 20A 250V Ceramic Fuse
To replace a blown fuse, always unplug the microwave and locate the fuse holder near the power cord or internal panel. Use a screwdriver to open the cover carefully and remove the old fuse.
Insert the new ceramic fuse into the holder, ensuring the metal caps make firm contact with the terminals. Reassemble the cover and plug the microwave back in to test if it is functioning correctly.
If the new fuse blows again immediately, do not keep replacing it. This indicates a deeper issue such as a faulty magnetron, door switch, or wiring problem that requires professional inspection.
Frequently Asked Questions
Can I use a glass fuse instead of a ceramic one for my microwave?
It is not recommended to use a glass fuse in a microwave because ceramic fuses handle heat better and are safer. Glass fuses may break easily and pose higher fire risks during faults.
What does slow-blow mean for a microwave fuse?
Slow-blow means the fuse can withstand temporary high currents during startup without blowing. This prevents nuisance trips and ensures the fuse only fails during sustained overloads.
Why does my microwave fuse keep blowing after replacement?
If a fuse keeps blowing, there may be a deeper electrical fault such as a shorted magnetron or bad door switch. Always check other components before simply replacing the fuse again.
Is it safe to install a microwave fuse myself?
Yes it is safe if you unplug the microwave first and handle the components with care. Always verify the voltage and size match before installing the new fuse.
How do I know which fuse fits my specific microwave model?
Check the label on your old fuse for part numbers and dimensions. Match these details with the product description to ensure compatibility with your model.
Do ceramic fuses last longer than glass fuses?
Ceramic fuses are more durable and better at managing heat than glass fuses. This often results in a longer service life and better performance in high power appliances.
Final Thoughts on Choosing the Best 20A 250V Ceramic Fuses for Microwave Ovens
The BOJACK, Frienda, and BlueStars options top our list due to their reliability and value. These picks offer strong safety features and wide compatibility for most household microwave models.
When choosing a fuse, prioritize the correct dimensions and slow-blow design to ensure safe operation. Always consider buying in bulk if you own multiple units to save costs over time.
Remember to verify product details and current availability on the listing page before buying. Prices and stock levels change frequently so always double check the specifications before finalizing your order.