5-Pack 20 amp Microwave Fuse 20a 250v, 0.24 x 1.2 inch for GE WB27X10388
4.5Editor score
Affordable 5-pack value
Direct replacement for WB27X10388
Universal fit for most brands
In this guide
When your microwave stops working, a blown fuse is often the culprit. Choosing the right 20A 250V ceramic fuse ensures safety and reliable performance for your appliance.
We compared ten top-rated ceramic fuses based on build quality, compatibility with major brands, and customer feedback. Our list includes options for single replacements and bulk packs.
Each pick highlights key specifications, pros, and cons to help you decide. Prices and availability change frequently, so verify details before purchasing your replacement fuse.
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
Slow-blow design for safety
Compatible with GE WB27X10388
High-quality ceramic tube body
BlueStars Upgraded 5-Pack WB27X10388 20A 20 Amp 250V Ceramic Microwave Fuse
4.5Editor score
Lifetime protection guarantee
High-purity quartz sand filled
Wear-resistant end caps
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 selected ceramic fuses. Review dimensions, ratings, and pack sizes to find the best match for your microwave.
ProductsSpecificationsEditor scorePrice
Editor's Choice
BOJACK Microwave Fuse 20a Ceramic Fuse
6×30 mm dimensions
20 Amp current rating
250V voltage rating
Slow-blow ceramic type
4.6Editor score
Editor's Choice
Frienda 20 Pcs Microwave Fuse
20 pieces per pack
6.35 x 30 mm size
20 Amp 250V rating
Time delay ceramic fuse
4.7Editor score
Best Premium
HiQltyla 20A 250V Microwave Fuse
2 pieces per pack
6x30mm slow-blow design
CSA safety certified
Quartz sand filled tube
4.6Editor score
BlueStars Upgraded 5-Pack WB27X10388
5 pieces per pack
Compatible with GE Whirlpool
High-purity quartz sand
Lifetime protection included
4.5Editor score
5-Pack 20 amp Microwave Fuse 20a 250v
6×30 mm dimensions
20A 250V rating
Replaces multiple part numbers
Ceramic tube construction
4.5Editor score
Microwave Fuse 20 Amp 250V Ceramic Slow-Blow
6 pieces per pack
6mm x 32mm size
Direct GE replacement
Handles high inrush current
4.4Editor score
Pack of 10 20 Amp 250V Microwave Fuse
10 pieces per pack
6x30mm slow-blow
Nickel plated brass ends
Universal replacement part
4.6Editor score
BOJACK Microwave Fuse 20A 250V 6x30mm
20 pieces per pack
6×30 mm dimensions
20 Amp 250V rating
Plastic storage case
4.6Editor score
Litoexpe 20-Pack 20A 250V Ceramic
20 pieces per pack
6 x 30mm size
Time delay fuses
30-day return policy
4.7Editor score
Pack of 5 Microwave Replacement Fuse 20A
5 pieces per pack
Fast blow ceramic fuse
Replaces many OEM parts
Exceeds OEM requirements
4.7Editor score
1. BOJACK Microwave Fuse 20a Ceramic Fuse – Best Overall 20A 250V Ceramic Fuses for Microwave Ovens
BOJACK Microwave Fuse 20a Ceramic Fuse
6×30 mm dimensions
20 Amp current rating
250V voltage rating
Slow-blow ceramic type
The BOJACK Microwave Fuse is a top-rated ceramic fuse rated at 20A and 250V. It features a slow-blow design specifically meant to protect microwave circuitry from surges.
Pros
- Compatible with GE WB27X10388
- High-quality slow-blow design
- Protects microwave circuitry effectively
- Affordable single replacement price
- Universal fit for many microwaves
Cons
- May need multiple packs for spares
- Dimensions must match old fuse exactly
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Its compatibility with GE WB27X10388 makes it a direct replacement for many popular microwave models. The high-quality ceramic body ensures durability during electrical faults.
While it is a single unit, some users may prefer buying packs for future replacements. Always verify your old fuse size before purchasing to ensure a perfect fit.
Choose this fuse if you need a reliable, affordable replacement for common GE microwaves. It offers strong protection and a proven track record of customer satisfaction.
Superior Circuit Protection
The slow-blow feature handles temporary inrush current without blowing, preventing unnecessary replacements during normal microwave startup.
Universal Compatibility
This fuse works with various brands beyond GE, making it a versatile choice for many households needing a quick repair.
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2. Frienda 20 Pcs Microwave Fuse – Best Value Bulk 20A 250V Ceramic Fuses for Microwave Ovens
Frienda 20 Pcs Microwave Fuse
20 pieces per pack
6.35 x 30 mm size
20 Amp 250V rating
Time delay ceramic fuse
The Frienda 20 Pcs Microwave Fuse offers an excellent bulk option for those who want spares on hand. Each fuse is rated 20A at 250V with a slow-blow design.
Pros
- 20 pieces per pack value
- Compatible with GE and Kenmore
- Filled with sand for safety
- Resists surge current effectively
- Long-term supply for DIY repairs
Cons
- Pack size may be too large for single needs
- Verify voltage and current carefully
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These ceramic fuses are filled with sand to prevent glass fragments during failure, enhancing safety in your kitchen. They work well with GE WB27X10388 and Kenmore models.
The large quantity is great for workshop storage or multiple repairs, but might be unnecessary for one-time users. Always check your specific fuse specs before ordering.
This pack is ideal for homeowners or technicians who prefer having extra fuses ready. It combines safety features with long-term value for frequent appliance maintenance.
Enhanced Safety Features
The sand-filled ceramic tube ensures that if the fuse blows, it will not produce glass fragments, making it safe for use near food preparation areas.
Sufficient Quantity
With 20 pieces included, this pack satisfies daily replacement demands for years, saving you from repeated orders when fuses fail unexpectedly.
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3. HiQltyla 20A 250V Microwave Fuse – Best Compact 20A 250V Ceramic Fuses for Microwave Ovens
HiQltyla 20A 250V Microwave Fuse
2 pieces per pack
6x30mm slow-blow design
CSA safety certified
Quartz sand filled tube
HiQltyla offers a compact 2-pack of 20A 250V ceramic fuses designed for microwave safety. These units feature a slow-blow design to protect circuitry during operation.
Pros
- CSA safety certified for reliability
- Quartz sand prevents arc pulling
- Slow-blow design keeps safety
- 2-piece pack for immediate spare
- Durable high-quality materials
Cons
- Only 2 pieces included
- Check dimensions before purchasing
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The inclusion of quartz sand inside the ceramic tube reduces the risk of arc pulling and explosion. This makes them safer than standard glass fuses during electrical surges.
Customers appreciate the CSA certification which indicates safety compliance. However, buying just two means you might need to reorder sooner if issues persist or multiple units fail.
Select this fuse for reliable safety and compact packaging. It is a great choice if you need a couple of replacements without committing to a large bulk order.
Certified Safety
All electrical properties passed safety certification as CSA, giving you confidence that these fuses meet rigorous safety standards for home appliances.
Arc Prevention
The quartz sand filling reduces the probability of arc pulling during fusing, preventing potential fire hazards that could arise from standard glass tube fuses.
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4. BlueStars Upgraded 5-Pack WB27X10388 – Best Warranty 20A 250V Ceramic Fuses for Microwave Ovens
BlueStars Upgraded 5-Pack WB27X10388
5 pieces per pack
Compatible with GE Whirlpool
High-purity quartz sand
Lifetime protection included
BlueStars delivers an upgraded 5-pack with a lifetime protection guarantee. These 20A 250V fuses are designed with high-purity quartz sand to maintain good insulation.
Pros
- Lifetime protection guarantee
- High-purity quartz sand fill
- Wear-resistant end caps
- Compatible with multiple brands
- Quick 5-minute installation
Cons
- Verify part number before purchase
- May not fix underlying electrical faults
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The wear-resistant end caps ensure a sturdy construction that lasts long. They are perfect matches for GE WB27X10388 and models from Whirlpool, Kenmore, LG, and Panasonic.
While the lifetime warranty is attractive, ensure the fuse itself is the issue before replacing. Sometimes repeated blowing indicates faulty parts like the magnetron or wiring.
This option is best for those seeking peace of mind with a warranty. It offers superior build quality and broad compatibility for a wide range of microwave brands.
Lifetime Protection
Enjoy reliable performance with lifetime protection coverage ensuring that your product is always covered for any defects or issues that may arise.
Easy Installation
The design allows for a 5-minute quick fix when you disconnect power and replace the fuse near the power cord safely.
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5. 5-Pack 20 amp Microwave Fuse 20a 250v – Best Budget 20A 250V Ceramic Fuses for Microwave Ovens
5-Pack 20 amp Microwave Fuse 20a 250v
6×30 mm dimensions
20A 250V rating
Replaces multiple part numbers
Ceramic tube construction
This 5-pack offers an affordable direct replacement for most microwave models. Each fuse is rated at 20A and 250V with a slow-blow design for circuit protection.
Pros
- Affordable 5-pack price
- Compatible with GE and Amana
- Direct replacement for WB27X10388
- Heavy-duty ceramic tube
- High-strength end caps
Cons
- Check size against old fuse
- Verify voltage rating carefully
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It replaces part numbers like WB27X10388 and AP3994062. The ceramic tube construction with high-strength end caps ensures durability during high voltage surges.
The value for money is excellent for households needing a spare. However, always confirm your current fuse size and voltage to prevent installation errors.
This choice is perfect for budget-conscious buyers. It provides the essentials for safe operation without sacrificing compatibility with major appliance brands.
Wide Compatibility
Fully compatible with GE, Whirlpool, Kenmore, KitchenAid, and more, making it a universal fix for many microwave brands.
Superior Safety
Acts as a reliable safety device that disconnects power during overheating or overcurrent to protect internal circuits from further damage.
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6. Microwave Fuse 20 Amp 250V Ceramic Slow-Blow – Best DIY Kit 20A 250V Ceramic Fuses for Microwave Ovens
Microwave Fuse – 20 Amp 250V Ceramic Slow-Blow
6 pieces per pack
6mm x 32mm size
Direct GE replacement
Handles high inrush current
This 6-pack is engineered specifically for microwave oven protection. Its slow-blow construction handles temporary inrush current when the microwave starts up safely.
Pros
- Engineered specifically for microwaves
- Handles high inrush current
- Compatible with Whirlpool Kenmore
- High-quality ceramic material
- 6-pack for future needs
Cons
- Verify rating before installation
- Size might differ slightly from 6×30
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Made from high-quality ceramic material, it offers excellent heat resistance. It works for GE WB27X10388, Whirlpool, and Kenmore, ensuring universal fit.
Having six fuses on hand saves money compared to professional service calls. Just ensure you verify your old fuse rating to avoid buying the wrong size.
Ideal for DIYers who want to keep spares ready. This kit provides peace of mind and reliable performance for long-term microwave maintenance.
Reliability
This robust design ensures stable operation and a long service life, providing peace of mind for your repair projects.
DIY Savings
Replacing a blown fuse is one of the simplest DIY repairs. This bulk pack saves you time and money compared to paying for a service call.
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7. Pack of 10 20 Amp 250V Microwave Fuse Slow-Blow – Best Large Pack 20A 250V Ceramic Fuses for Microwave Ovens
(Pack of 10) 20 Amp 250V Microwave Fuse Slow-Blow
10 pieces per pack
6x30mm slow-blow
Nickel plated brass ends
Universal replacement part
With 10 pieces per pack, this option ensures you have plenty of spares. Each fuse is a 20A 250V slow-blow type made with ceramic and quartz sand.
Pros
- 10 pieces per pack quantity
- Compatible with GE and Whirlpool
- Nickel plated brass terminals
- Quartz sand filled interior
- Slow blow time delay
Cons
- Bulk purchase might be excess for one fuse
- Check voltage rating first
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The nickel plated brass ends offer better conductivity and resistance to corrosion. It is a universal replacement for GE WB27X10388 and Whirlpool models.
This pack is perfect for families with multiple microwaves or those who want to be prepared. Always verify size and rating before ordering to avoid returns.
Buy this for maximum convenience and inventory. It offers a high-quality construction designed to protect various electronic devices from current overloads.
Material Quality
The body material includes ceramic tube and alloy with nickel plated brass, ensuring excellent durability and electrical performance.
Universal Fit
Suitable for various kinds of electronic devices circuit over current protection, making it a versatile tool for home repair.
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8. BOJACK Microwave Fuse 20A 250V 6x30mm – Best Bulk Stock 20A 250V Ceramic Fuses for Microwave Ovens
BOJACK Microwave Fuse 20A 250V 6x30mm
20 pieces per pack
6×30 mm dimensions
20 Amp 250V rating
Plastic storage case
BOJACK provides a massive 20-piece pack with a convenient plastic storage case. These high-quality slow-blow ceramic fuses are rated 20A at 250V.
Pros
- 20 pieces per pack quantity
- Plastic storage case included
- Slow-blow ceramic fuses
- High-quality slow-blow design
- Dimensions verified 6×30 mm
Cons
- Large pack size for single repair
- Store in dry place only
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The storage case helps keep the fuses organized and protected from moisture. It is ideal for maintenance professionals or homeowners who prefer bulk buying.
Ensure dimensions match your old fuse exactly before buying. If your microwave uses a slightly different size, this may not be the correct choice.
Choose this for cost-effective stockpiling. The included case adds value by ensuring your fuses remain in good condition until needed.
Storage Solution
The plastic storage case keeps 20 pieces organized and safe from damage or moisture in your workshop or kitchen cabinet.
Slow-Blow Safety
This slow-blow design is essential for microwaves to prevent unnecessary blowing during normal startup inrush currents.
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9. Litoexpe 20-Pack 20A 250V Ceramic – Best Warranty 20A 250V Ceramic Fuses for Microwave Ovens
Litoexpe 20-Pack 20A 250V Ceramic
20 pieces per pack
6 x 30mm size
Time delay fuses
30-day return policy
Litoexpe offers 20 pieces with a risk-free shopping guarantee. These ceramic fuses are filled with sand to prevent arc flashover and bursting.
Pros
- 20 pieces per pack value
- 30-day return policy
- Ceramic body with sand
- Prevents arc flashover
- Risk-free shopping option
Cons
- Verify size before ordering
- Check voltage rating carefully
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They are suitable for high amperage loads like microwave ovens. The 30-day return policy makes trying this bulk pack low-risk for buyers.
Always confirm size and voltage before placing your order. If your needs are different, you can return them easily within the window.
This is a smart choice for those who want flexibility and bulk savings. It ensures safety and reliability with a generous return policy.
Arc Prevention
Ceramic construction prevents arc flashover and reduces the risk of bursting compared to standard glass body fuses.
Risk-Free Shopping
A 30-day return and replacement service is offered to help you if you have any questions or issues with the product.
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10. Pack of 5 Microwave Replacement Fuse 20A – Best Fast Shipping 20A 250V Ceramic Fuses for Microwave Ovens
(Pack of 5) Microwave Replacement Fuse
5 pieces per pack
Replaces many OEM parts
Exceeds OEM requirements
Fast shipping available
This pack replaces part numbers like WB27X10388 and 5304423383. It is designed to exceed OEM requirements and ships fast when in stock.
Pros
- Replaces many OEM part numbers
- In stock and ships fast
- Exceeds OEM requirements
- Compatible with many microwaves
- 5-pack quantity
Cons
- Verify part number compatibility
- Check voltage rating before buying
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The fast shipping option is great for urgent repairs. It ensures your microwave gets back to work quickly with a reliable, high-quality replacement.
With many OEM part numbers covered, compatibility is high. Always double-check your existing fuse to ensure it matches these specs exactly.
Choose this for speed and reliability. It is an excellent option when you need your appliance fixed immediately without compromising quality.
OEM Standards
Fits OEM Standards! Guaranteed to Exceed OEM Requirements! ensuring compatibility and performance standards are met or better.
Fast Availability
In Stock and Ships Fast, making it easy to get your microwave repaired quickly and minimize downtime.
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Buying Guide – How to Choose the Best 20A 250V Ceramic Fuses for Microwave Ovens
Selecting the correct fuse is critical for safety and appliance function. Use this guide to identify key specifications and features.
Current Rating
The current rating must match your old fuse exactly. For most microwaves, this is 20 Amps. Using a higher rating may damage internal components, while lower ratings cause frequent blowing.
Always check the printed value on your old fuse to ensure accuracy.
Voltage Rating
Microwave fuses typically require a 250V rating to handle household AC voltage safely. This rating ensures the fuse can interrupt the circuit without failing during high voltage surges.
Look for 250V clearly marked on the product description.
Dimensions
Standard microwave fuse dimensions are often 6mm x 30mm. However, slight variations exist. Measuring your old fuse ensures the new one fits the holder properly without forced pressure.
Compare diameter and length against your old part.
Fuse Type
Slow-blow or time-delay fuses are designed to handle temporary inrush current during microwave startup. This prevents the fuse from blowing when the microwave first turns on during normal operation.
Ensure you purchase a slow-blow type unless your manual specifies otherwise.
Material Safety
Ceramic fuses are preferred because they are filled with sand to prevent arc flashes and bursting. This is safer than glass fuses which may shatter and spray hot fragments during failure.
Look for descriptions mentioning quartz sand or ceramic construction.
Compatibility
Ensure the fuse lists your brand or part number as compatible. Universal replacements often cover GE WB27X10388 and similar models, but verification is key to avoid returns.
Check the compatibility list provided by the seller.
Pack Size
Single fuses are sufficient for one-time repairs, but packs of 5, 10, or 20 offer better value for keeping spares. Consider how often you might need replacements for future use.
Buying a pack saves money in the long run.
Certification
Look for certifications like CSA or UL that indicate safety compliance. These standards ensure the fuse meets rigorous electrical safety requirements for home appliances.
Certified fuses reduce the risk of electrical hazards.
How to Use and Care for Your 20A 250V Ceramic Fuses for Microwave Ovens
Before handling the fuse, unplug the microwave and allow it to cool completely. Open the casing carefully to locate the blown fuse near the power cord or control panel.
Remove the old fuse using needle-nose pliers to avoid burns. Compare the new fuse's dimensions and ratings against the old one to confirm it is a correct match.
Insert the new fuse firmly into the holder and secure the casing. Plug the microwave back in and test the operation. If the new fuse blows again, there may be a larger electrical fault.
Frequently Asked Questions
Can I use a glass fuse instead of a ceramic one?
No, glass fuses are not recommended for microwaves. Ceramic fuses are filled with sand which prevents arc flashes and contains fragments if the fuse blows, making them safer for high-power appliances.
What does slow-blow mean?
Slow-blow means the fuse is designed to handle temporary surges, such as those occurring when a microwave starts up. This prevents it from blowing unnecessarily during normal operation while still protecting against overloads.
How do I know which part number to buy?
Remove the old fuse and check the printed number or dimensions. If it is unreadable, measure the length and diameter and note the voltage and current ratings to find a compatible universal replacement.
Why does my fuse blow repeatedly?
Repeated blowing usually indicates a larger electrical issue such as a faulty magnetron, high voltage diode, or wiring problem. Replacing the fuse may work temporarily, but the underlying issue must be resolved.
Is it safe to replace a fuse myself?
Yes, replacing a microwave fuse is a common DIY repair. Ensure you disconnect power and wear insulated gloves. Always verify compatibility and safety features before proceeding with the replacement.
What is the difference between 20A and 15A?
A 20A fuse allows more current flow than a 15A fuse. Using a lower rating can cause the fuse to blow during normal operation, while a higher rating might fail to protect the circuit during a surge.
Are these fuses universal for all brands?
Most fuses in this guide are universal replacements that fit multiple brands like GE, Whirlpool, and Kenmore. However, always verify the specific dimensions and part numbers to ensure a perfect match.
How long do ceramic fuses last?
Ceramic fuses are built to last indefinitely under normal conditions. They only fail when there is an electrical overload or surge. If they blow, they must be replaced immediately to restore appliance function.
Final Thoughts on Choosing the Best 20A 250V Ceramic Fuses for Microwave Ovens
The BOJACK, Frienda, and BlueStars options stand out for their balance of quality, safety features, and value. Whether you need a single unit or bulk stock, there is a choice to suit your needs.
Prioritize slow-blow design and ceramic construction for maximum safety. Ensuring your fuse matches your old one exactly will prevent unnecessary trips to the store.
Always check current prices and availability before purchasing. Microwave repair is an affordable DIY task with the right replacement part, saving you money on service calls.