5-Pack 20 amp Microwave Fuse 20a 250v
4.5Editor score
Affordable multi-pack value
Heavy-duty ceramic construction
Compatible with major brands
In this guide
When your microwave stops working, a blown fuse is often the culprit. Finding the correct 20A 250V ceramic fuse ensures your appliance runs safely and efficiently without risking further damage to internal components.
We evaluated ten top-rated replacement fuses based on build quality, compatibility with major brands like GE and Whirlpool, and user feedback. Each product offers slow-blow protection to handle surge currents safely.
Each pick below highlights key specs, pros, and cons to help you decide. Note that availability and pricing can change quickly, so verify details before purchasing to ensure the correct fit for your model.
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
Slow-blow ceramic design
Universal fit for many models
Protects internal circuitry effectively
BlueStars Upgraded 5-Pack WB27X10388 20A 20 Amp 250V
4.5Editor score
Lifetime protection guarantee
High-purity quartz sand fill
Wear-resistant end caps
Top 10 Best 20A 250V Ceramic Fuses for Microwave Ovens in 2026 Compared
This side-by-side comparison reviews all ten products based on specifications, compatibility, and value to help you find the right match for your microwave repair needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
BOJACK Microwave Fuse 20a Ceramic
20A 250V rating
6x30mm dimensions
Slow-blow time delay
Ceramic tube body
4.6Editor score
Editor's Choice
Frienda 20 Pcs Microwave Fuse
20A 250V rating
20-piece package
Sand filled safety
Compatible with GE
4.7Editor score
Best Budget
HiQltyla 20A 250V Microwave Fuse
20A 250V rating
6x30mm size
Quartz sand filled
CSA safety certified
4.6Editor score
BlueStars Upgraded 5-Pack WB27X10388
20A 250V rating
5-pack quantity
Ceramic tube body
Lifetime protection
4.5Editor score
5-Pack 20 amp Microwave Fuse 20a 250v
20A 250V rating
6x30mm dimensions
Ceramic construction
Universal replacement
4.5Editor score
Microwave Fuse – 20 Amp 250V
20A 250V rating
6mm x 32mm
6-piece pack
Slow-blow design
4.4Editor score
(Pack of 10) 20 Amp 250V
20A 250V rating
10-piece quantity
Ceramic tube
Time delay type
4.6Editor score
BOJACK Microwave Fuse 20AL250V 6x30mm
20A 250V rating
20-piece pack
Plastic storage case
Time-delay fuses
4.6Editor score
Litoexpe 20-Pack 20A 250V
20A 250V rating
20-piece quantity
Ceramic body
Carrying case
4.7Editor score
(Pack of 5) Microwave Replacement Fuse
20A 250V rating
5-pack quantity
Fast blow type
OEM standard fit
4.7Editor score
1. BOJACK Microwave Fuse – Best Overall 20A 250V Ceramic Fuse for Microwave Ovens
BOJACK Microwave Fuse 20a Ceramic Fuse 20 Amp 250V Slow-Blow
6x30mm dimensions
20A 250V rating
Slow-blow time delay
Ceramic tube body
The BOJACK microwave fuse offers a reliable solution for common fuse issues in microwave ovens. With a solid 4.6 star rating, users appreciate its compatibility with various models, including GE and others.
Pros
- Universal fit for many models
- Durable ceramic construction
- Protects internal circuitry
- Affordable single unit
- Easy to install
Cons
- Not a multi-pack
- Check voltage carefully
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This fuse features a slow-blow design that protects circuitry from power surges while handling normal startup currents. Its 6x30mm size matches many original equipment manufacturer part numbers, making it a versatile choice.
While it lacks a bulk pack option, its single-unit price makes it a great trial replacement. Always confirm your old fuse specs before installation to ensure proper function and safety.
This option is ideal for DIYers seeking a straightforward replacement part without buying extras. If your microwave fails to start, this fuse is a logical first step in troubleshooting.
Superior Circuit Protection
The slow-blow design ensures the fuse survives momentary surges but breaks during sustained overloads, protecting your expensive appliance from further damage.
Universal Compatibility
Designed to replace standard parts like WB27X10388, this fuse fits a wide range of brands including GE, Whirlpool, and Kenmore for versatile use.
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2. Frienda 20 Pcs – Best Value Multi-Pack 20A 250V Ceramic Fuse for Microwave Ovens
Frienda 20 Pcs Microwave Fuse
20A 250V rating
20-piece package
Sand filled safety
Compatible with GE
Frienda offers a robust 20-piece pack that ensures you have spares on hand for future repairs. With a 4.7 rating, users highlight its durability and reliable performance over time.
Pros
- Excellent value for bulk
- High customer ratings
- Slow-blow time delay
- Safe ceramic construction
- Long-term supply
Cons
- Non-brand generic product
- Verify dimensions first
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Each fuse is ceramic and filled with sand to prevent glass fragments when blowing, enhancing safety. The 20A 250V rating matches standard requirements for most household microwaves.
While it is an aftermarket product, it works well for replacing common parts like WB27X10388. The bulk count is useful for households with multiple appliances or for frequent repair use.
This pack is best for those who want peace of mind with extra fuses. Buying in bulk often saves money compared to purchasing individual units repeatedly.
Enhanced Safety Features
The quartz sand filling inside the ceramic tube helps prevent arcs and reduces explosion risks compared to glass fuses during failure events.
Cost-Effective Bulk Buying
With 20 units included, this pack offers excellent value for homeowners or technicians who need reliable fuses for various appliance repairs.
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3. HiQltyla 20A – Best Budget 20A 250V Ceramic Fuse for Microwave Ovens
HiQltyla 20A 250V Microwave Fuse
6x30mm dimensions
20A 250V rating
CSA safety certified
Quartz sand filled
HiQltyla provides a safe and affordable option for microwave repair. Rated 4.6 stars, this two-pack offers CSA certification and a slow-blow design to handle startup surges.
Pros
- Low cost option
- Safety certified
- Slow-blow design
- Ceramic body
- Includes 2 pieces
Cons
- Smaller pack size
- Verify compatibility
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The ceramic tube filled with quartz sand prevents arc pull during fusing, ensuring higher safety levels than glass alternatives. It fits 6x30mm slots found in many units.
While you get fewer units, the low price makes it attractive for quick fixes. Always verify your old fuse matches these dimensions before use.
This is perfect for those needing a quick replacement without breaking the bank. For households with single appliances, a two-pack is often sufficient.
Certified Safety
The fuse meets CSA safety standards, giving users confidence in its electrical properties and long service life for home appliances.
Practical Two-Pack Size
Two units offer a spare in case the first fails due to an underlying issue, making it a smart purchase for DIY repair projects.
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4. BlueStars Upgraded 5-Pack – Premium 20A 250V Ceramic Fuse for Microwave Ovens
BlueStars Upgraded 5-Pack WB27X10388
20A 250V rating
5-pack quantity
Ceramic tube body
Lifetime protection
BlueStars delivers a premium experience with a lifetime protection guarantee. The five-pack ensures spares are available while offering a durable product rated 4.5 stars by buyers.
Pros
- Lifetime warranty
- High purity quartz sand
- Wear-resistant design
- Widely compatible
- Easy installation
Cons
- Slightly higher cost
- Check part number
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Its high-purity quartz sand fill maintains insulation against overcurrent, protecting the microwave from damage. The ceramic body and end caps ensure wear resistance and longevity.
While it might cost more than generic alternatives, the warranty and build quality offer long-term value. It fits well with GE, Whirlpool, and other major brands.
This choice is ideal for those prioritizing safety and reliability. The lifetime guarantee provides peace of mind for critical appliance repairs.
Lifetime Protection Guarantee
The manufacturer promises coverage for any defects, ensuring that your product will always be covered for issues that may arise over time.
Superior Build Quality
Constructed with a sturdy ceramic tube body and end caps, these fuses are designed for long-lasting performance in harsh conditions.
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5. 5-Pack 20 Amp – Solid 20A 250V Ceramic Fuse for Microwave Ovens
5-Pack 20 amp Microwave Fuse 20a 250v
20A 250V rating
5-piece pack
Heavy-duty ceramic
Universal replacement
This 5-pack option combines value and utility for standard microwave repairs. Rated 4.5 stars, it fits brands like GE, Kenmore, and KitchenAid seamlessly.
Pros
- Affordable five-pack
- Wide brand compatibility
- Ceramic construction
- Quick installation
- Protects internal circuit
Cons
- Check voltage carefully
- Verify fit first
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The ceramic tube construction ensures durability and stability. Users report easy installation and successful restoration of power to their appliances.
It serves as a reliable universal replacement for various models. The five-unit count is ideal for households needing a backup in case of future issues.
This product is best for general repairs where budget matters. It provides a safe way to extend the service life of your appliance.
Wide Brand Compatibility
Compatible with many major brands including GE, Whirlpool, and Kenmore, making it a go-to solution for various microwave models.
Reliable Circuit Protection
The fuse acts as a safety device to disconnect power during overheating or surges, protecting your internal components from further damage.
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6. Microwave Fuse 20 Amp – Reliable 20A 250V Ceramic Fuse for Microwave Ovens
Microwave Fuse – 20 Amp 250V
20A 250V rating
6-piece pack
Ceramic construction
Slow-blow design
This option offers a direct replacement for GE part WB27X10388. With a 4.4 rating, it fits Whirlpool, Kenmore, and other brands with ease.
Pros
- Six-piece value pack
- Direct GE replacement
- Slow-blow design
- Ceramic reliability
- DIY friendly
Cons
- Check dimensions first
- Ensure power off
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The slow-blow design handles temporary high inrush currents during startup. It uses premium ceramic for heat resistance and electrical insulation over time.
Six units provide good value for those who repair multiple appliances. It is a solid choice for DIYers looking for a quick fix.
This fuse is best for those seeking a simple repair solution. Verify dimensions and ratings before installation to ensure correct fit.
Premium Ceramic Build
Built from high-quality ceramic, it offers excellent heat resistance ensuring stable operation for long service life.
DIY Friendly Installation
Replacing the fuse is a simple DIY repair. Unplug the microwave, locate the holder, and swap the old fuse for the new one quickly.
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7. Pack of 10 – Large Volume 20A 250V Ceramic Fuse for Microwave Ovens
(Pack of 10) 20 Amp 250V
20A 250V rating
10-piece pack
Quartz sand filled
Ceramic tube
A ten-piece pack provides excellent value for those needing long-term supplies. Rated 4.6 stars, it fits many brands and models including GE WB27X10388.
Pros
- Large ten-piece quantity
- Ceramic and alloy body
- Slow blow design
- Fits GE and others
- Great value
Cons
- Check compatibility first
- Verify dimensions
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The slow-blow time delay design ensures safety during startup surges. The body is ceramic tube with alloy components and nickel-plated brass for durability.
Its size and rating make it ideal for various appliances. The bulk count ensures you never face a shortage when an urgent repair is needed.
This choice suits households needing bulk fuses at a low cost. It offers reliable protection for common circuit issues.
Bulk Value Package
Ten units in one package provide significant savings compared to buying single fuses, making it a smart long-term solution.
Versatile Compatibility
Compatible with GE, Whirlpool, Kenmore, and other brands, ensuring a wide range of use cases for home appliances.
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8. BOJACK 20AL250V 6x30mm – Bulk 20A 250V Ceramic Fuse for Microwave Ovens
BOJACK Microwave Fuse 20AL250V 6x30mm
20A 250V rating
20-piece quantity
Ceramic tube
Time-delay type
BOJACK delivers a 20-piece bulk pack with a protective plastic storage case. Rated 4.6 stars, it provides quality and safety for microwave repairs.
Pros
- Twenty-piece large pack
- Plastic storage case
- Slow-blow design
- Durable materials
- High rating
Cons
- Verify model specs
- Check voltage
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These ceramic tube fuses offer time-delay characteristics to prevent unnecessary blowing during startup. Each unit measures 6x30mm and handles 20A at 250V.
The storage case keeps the fuses organized for easy access. This is a great choice for professionals or large households with multiple appliances.
Ideal for those who want organized spares. The bulk pack ensures you always have what you need for any sudden fuse failure.
Organized Storage
The included plastic storage case keeps your fuses organized and safe from damage, ensuring they are ready when needed.
Consistent Performance
High-quality slow-blow ceramic fuses ensure consistent performance across multiple units, making this a reliable source for replacements.
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9. Litoexpe 20-Pack – Reliable Bulk 20A 250V Ceramic Fuse for Microwave Ovens
Litoexpe 20-Pack 20A 250V
20A 250V rating
20-piece pack
Ceramic body
Carrying case
Litoexpe offers a 20-piece bulk pack with a carrying case. With a 4.7 rating, users value its high amperage handling and safety features.
Pros
- High bulk quantity
- Arc flashover protection
- Carrying case included
- Safety focused
- Good ratings
Cons
- Check fuse size
- Verify voltage
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The ceramic construction prevents arc flashover and reduces bursting risks. It suits high loads like microwaves, motors, and power tools.
This product is ideal for frequent repair needs. The case keeps the fuses portable and organized for easy access.
Perfect for technicians or large households. The bulk pack ensures you have spares for any appliance needing a fuse replacement.
Enhanced Safety
The ceramic tube prevents arc flashover and reduces the risk of bursting compared to standard glass fuses, making it safer.
High Amperage Handling
Suited for high amperage and Hi power loads, it handles large current draw fluctuations effectively for various devices.
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10. Pack of 5 – Versatile 20A 250V Ceramic Fuse for Microwave Ovens
(Pack of 5) Microwave Replacement Fuse
20A 250V rating
5-piece pack
Fast blow type
OEM standard
This five-pack offers OEM-standard compatibility with fast shipping. Rated 4.7 stars, it replaces many part numbers and fits various microwave brands.
Pros
- Five-piece quantity
- Fits OEM standards
- Many compatible models
- In stock fast
- Reliable ratings
Cons
- Check part numbers
- Verify dimensions
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It is designed for quick and reliable repairs. Users find it works well across multiple models without fit issues.
With in-stock availability, it is a convenient choice. Always confirm your model needs these specs before buying.
This is ideal for general household repairs. The standard fit ensures you get a part that works as intended.
Guaranteed to Exceed OEM Requirements
The fuse fits OEM standards and is guaranteed to exceed OEM requirements, ensuring reliable performance.
Wide Model Support
Replaces many part numbers like 5304423383 and WB27X10388, ensuring compatibility with a wide range of microwave models.
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Buying Guide – How to Choose the Best 20A 250V Ceramic Fuses for Microwave Ovens
Selecting the right replacement fuse involves more than matching amperage. This section outlines critical factors to ensure a safe and effective repair.
Fuse Type and Blow Speed
Most microwave fuses require a slow-blow or time-delay design. This feature allows the fuse to handle the high inrush current that occurs when the microwave starts up without blowing prematurely. Standard fast-blow fuses might trip too quickly during normal operation, causing unnecessary replacement cycles. Always verify that the fuse explicitly states it is slow-blow or time-delay to match your appliance's needs.
Choose a slow-blow time delay fuse to prevent false trips during startup cycles.
Physical Dimensions and Size
Even with matching electrical ratings, a fuse that is too large or too small will not fit the holder. The most common size for microwave fuses is 6x30mm (approximately 0.24 x 1.2 inches). Measure your old fuse carefully before purchasing a replacement to avoid compatibility issues. Some models may have specific part numbers associated with these dimensions.
Confirm physical dimensions like 6x30mm match your old fuse exactly for proper installation.
Voltage and Current Ratings
Your fuse must meet or exceed the voltage and current requirements of your microwave. A 20A 250V rating is standard for many models. Installing a fuse with lower ratings could cause it to blow under normal load. Conversely, a higher rating might not protect the circuit in the event of a fault. Always match the rating printed on the old fuse.
Ensure the fuse matches the required 20A current and 250V voltage ratings of your appliance.
Body Material and Safety
Ceramic fuses are generally safer than glass fuses for high-voltage appliances. Ceramic bodies can withstand higher heat and prevent arc flashover during a fault. Many ceramic fuses also include quartz sand fill to extinguish arcs inside the tube. This design reduces the risk of the fuse exploding or causing a fire if it blows unexpectedly.
Choose a ceramic tube body with quartz sand fill for better heat resistance and safety.
Compatibility with Your Brand
While many fuses are universal, checking compatibility with your specific microwave brand is wise. Some products list compatibility with GE, Whirlpool, Kenmore, and others. Ensure the product description mentions your brand or model number. This step prevents returns due to physical fit or connector differences.
Verify the fuse description lists compatibility with your specific microwave brand or model number.
Pack Quantity and Value
Single fuses cost less upfront but buying a pack can be more economical in the long run. Having spares on hand means you won't need to wait for shipping if a future fuse fails. Look for options that offer 5, 10, or 20 fuses if you plan to repair multiple appliances or just want peace of mind.
Consider buying a multi-pack to get better value and keep spares for future repairs.
Warranty and Return Policy
A good warranty indicates manufacturer confidence in the product. Some options offer lifetime protection or satisfaction guarantees. This can be valuable if you encounter defects or if the fuse blows again shortly after installation due to product issues. Check the seller's return policy before purchasing online.
Look for products with a satisfaction guarantee or warranty to protect your investment.
Certifications and Standards
Products with safety certifications like CSA or UL are preferred for electrical components. These certifications mean the fuse has been tested for safety and performance. Avoid unbranded fuses with no safety markings as they might not perform reliably. Always check for certification logos or descriptions in the product listing.
Select fuses with recognized safety certifications like CSA or UL for assured performance.
How to Use and Care for Your 20A 250V Ceramic Fuse for Microwave Oven
Before replacing the fuse, always unplug the microwave from the wall outlet. Discharge any remaining high-voltage capacitors using a screwdriver to ensure personal safety. Then access the fuse holder usually located near the power entry point or behind the control panel depending on the model.
Remove the blown fuse carefully and check for visible damage on the ceramic tube or contacts. Insert the new fuse ensuring the orientation matches the original if marked. Do not force the fuse into the holder; it should slide in smoothly. Reassemble any panels and plug the microwave back in to test the operation.
If the new fuse blows immediately, do not continue replacing it. This suggests an underlying electrical fault like a faulty door interlock, magnetron, or high voltage diode. Consult a professional technician in such cases to avoid further damage. Regularly check the fuse if you notice power issues to catch problems early.
Frequently Asked Questions
How do I know if my microwave fuse is blown?
If your microwave stops turning on or shows no display, the fuse may be blown. Use a multimeter to check for continuity across the fuse terminals. If there is no continuity, the fuse is open and needs replacement. Also inspect the fuse visually for a broken metal wire or discolored glass.
Why does my microwave fuse keep blowing?
Repeated blowing often indicates a deeper electrical issue. Possible causes include a faulty magnetron, high voltage diode, or shorted capacitor. It could also be due to a bad door interlock switch. Replacing the fuse without fixing the root cause will lead to another blow soon.
Can I use a glass fuse instead of ceramic?
It is not recommended to substitute a glass fuse for a ceramic one in microwave ovens. Ceramic fuses handle higher voltages and heat better. Glass fuses may explode or fail to interrupt high currents safely during a fault. Always replace with the specified ceramic type.
Is it safe to replace a microwave fuse myself?
It can be safe if you follow proper precautions. Always unplug the microwave and discharge capacitors before touching internal components. Use insulated tools and wear gloves. If you are unsure about electrical repairs, it is safer to hire a professional technician to avoid shock hazards.
What happens if I install the wrong fuse rating?
Installing a fuse with too high a rating can prevent it from blowing during a fault, risking fire or component damage. A fuse with too low a rating may blow during normal use, leaving your appliance nonfunctional. Always match the original amp and voltage rating exactly.
Where is the fuse located on a microwave?
The main fuse is usually located inside the rear panel near the power cord entry. Some models hide it behind the control panel. Refer to your user manual or search for your model number online to find the exact location. It often has a small cylindrical shape.
How long does a microwave fuse last?
A fuse should theoretically last the lifetime of the microwave if the appliance operates normally. However, power surges or aging components can cause it to fail earlier. There is no standard expiration date. Replace it only when it shows signs of failure.
What is the difference between fast blow and slow blow?
Fast blow fuses open immediately when overcurrent occurs while slow blow fuses tolerate brief surges. Microwave ovens use slow blow fuses because the magnetron draws high current briefly at startup. Using a fast blow fuse can cause false trips and frequent replacement needs.
Final Thoughts on Choosing the Best 20A 250V Ceramic Fuses for Microwave Ovens
Finding the right fuse for your microwave involves matching specs and choosing quality. Our top picks highlight options like the BOJACK for reliability and the Frienda pack for value. Each product meets standard requirements for safe and effective repairs.
Consider your appliance needs before buying. If you only need one replacement, a single unit might suffice. For frequent repairs or bulk needs, packs offer better long-term savings. Always prioritize ceramic construction and correct ratings over price alone.
Before purchasing, check current availability and pricing to ensure the best deal. Prices change often so verifying before buying helps you get the right part. With the right fuse, your microwave can return to normal operation quickly and safely.