5-Pack 20 amp Microwave Fuse 20a 250v, 0.24 x 1.2 inch for GE WB27X10388
4.5Editor score
High value 5-pack option
Universal microwave compatibility
Durable ceramic tube body
In this guide
When your microwave stops working, a blown fuse is often the culprit. Finding the right 20A 250V ceramic fuse ensures your appliance runs safely and efficiently without risking further damage to internal components.
We analyzed ten highly rated replacement fuses based on compatibility, build quality, and user feedback. Each option meets strict electrical standards and offers slow-blow protection designed specifically for microwave oven circuits.
This guide highlights key features and specifications for every product. Prices and availability may change frequently, so verify details before purchasing to ensure you select the correct fuse for your specific model.
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 ceramic construction
Compatible with GE WB27X10388
6x30mm dimensions
BlueStars Upgraded 5-Pack WB27X10388 20A 20 Amp 250V Ceramic Microwave Fuse
4.5Editor score
Lifetime protection warranty included
High-purity quartz sand filled
Wear-resistant end caps
Top 10 Best 20A 250V Ceramic Fuses for Microwave Ovens in 2026 Compared
This side-by-side comparison evaluates all ten top-rated 20A 250V ceramic fuses for microwave ovens based on compatibility, build quality, and user satisfaction ratings.
ProductsSpecificationsEditor scorePrice
Editor's Choice
BOJACK Microwave Fuse 20a Ceramic Fuse 20 Amp 250V Slow-Blow Compatible and Universal Replacement for WB27X10388 and Other Microwaves
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
Slow-blow time delay
4.6Editor score
Editor's Choice
Frienda 20 Pcs Microwave Fuse, 20a 250v Slow-Blow Ceramic
20 Amp current rating
250 Volt voltage rating
6.35x30mm dimensions
20-piece bulk pack
4.7Editor score
Best Premium
HiQltyla 20A 250V Microwave Fuse, 6x30mm Slow-Blow Ceramic Cartridge, 2Pcs
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
CSA safety certified
4.6Editor score
BlueStars Upgraded 5-Pack WB27X10388 20A 20 Amp 250V Ceramic Microwave Fuse
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
Lifetime warranty included
4.5Editor score
5-Pack 20 amp Microwave Fuse 20a 250v, 0.24 x 1.2 inch for GE WB27X10388
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
5-piece value pack
4.5Editor score
Microwave Fuse – 20 Amp 250V Ceramic Slow-Blow,Direct Replacement for GE WB27X10388, Universal Fit for Whirlpool, Kenmore & Most Microwave Brands,6mm x 32mm – 6PCS
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
6-piece multi-pack
4.4Editor score
(Pack of 10) 20 Amp 250V Microwave Fuse Slow-Blow Time Delay Ceramic Fuses 6x30mm Compatible and Universal Replacement for GE WB27X10388 and Whirlpool Kenmore Other Microwaves
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
10-piece bulk pack
4.6Editor score
BOJACK Microwave Fuse 20AL250V 6x30mm 20A 250V Slow-Blow Ceramic Fuses 20 amp 250 Volt 0.24 x 1.18 Inch Ceramic Tube Time-delay Fuses (Pack of 20)
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
20-piece bulk pack
4.6Editor score
Litoexpe 20-Pack 20A 250V Ceramic Time Delay Fuses
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
20-piece bulk pack
4.7Editor score
(Pack of 5) Microwave Replacement Fuse, 20A, 250V, Ceramic Fuse, Compatible and Universal Replacement for WB27X10388 and Other Microwaves
20 Amp current rating
250 Volt voltage rating
6x30mm dimensions
5-piece value pack
4.7Editor score
1. BOJACK Microwave Fuse – Best Overall 20A 250V Ceramic Fuse for Microwave Oven
BOJACK Microwave Fuse 20a Ceramic Fuse 20 Amp 250V Slow-Blow Compatible and Universal Replacement for WB27X10388 and Other Microwaves
6x30mm fuse dimensions
20 Amp current capacity
250 Volt voltage rating
Slow-blow time delay
The BOJACK Microwave Fuse stands out as a top choice for replacing blown fuses in microwave ovens. With a strong 4.6 rating from verified users, it delivers reliable protection and universal compatibility for many common microwave models.
Pros
- Direct fit for GE WB27X10388
- High-quality ceramic construction
- Safe quartz sand filling
- Reliable slow-blow protection
- Easy installation process
Cons
- Limited quantity per pack
- Check dimensions before buying
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Its 6x30mm ceramic body is filled with quartz sand to prevent arc flash and reduce fire risks during fuse failure. The slow-blow design handles temporary inrush currents without blowing prematurely, ensuring stable performance under normal operating conditions.
While the fuse performs well in most cases, users should confirm their old fuse specifications match exactly. In rare cases, slight variations in holder fit can occur, but most report a seamless swap with no issues.
This fuse is ideal for homeowners looking for a quick, trustworthy repair solution. Its balance of safety features and compatibility makes it a smart pick for restoring microwave functionality without unnecessary delays.
Enhanced Safety with Quartz Sand
Quartz sand inside the ceramic tube prevents electrical arcs during failures, reducing the risk of fire or damage to surrounding components.
Slow-Blow Design for Microwave Startups
The time-delay feature allows the fuse to withstand the initial surge when the microwave starts, preventing unnecessary blows during normal operation.
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2. Frienda Microwave Fuse – Excellent Bulk Value for Frequent Repairs
Frienda 20 Pcs Microwave Fuse, 20a 250v Slow-Blow Ceramic
20-piece bulk packaging
6.35x30mm dimensions
20 Amp current capacity
Slow-blow time delay
Frienda offers a large 20-piece pack of ceramic fuses, making it a smart choice for those who manage multiple appliances or want spares on hand. Users rate this product highly for its reliability and direct fit in common microwave models.
Pros
- Generous quantity in one order
- High user satisfaction rating
- Compatible with GE and Kenmore
- Ceramic body with sand fill
- Cost-effective per unit
Cons
- Verify size before purchasing
- Aftermarket replacement only
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Each fuse features a durable ceramic body designed to resist heat and electrical surges. The sand-filled construction ensures safe failure modes, protecting internal circuitry from further damage during electrical faults or overcurrent events.
Because this is a bulk pack, buyers should double-check the dimensions to ensure perfect fit. While most report no issues, minor tolerance differences can sometimes affect seating in tight fuse holders.
This option is perfect for DIYers or repair professionals needing a steady supply of quality fuses. The high rating and consistent performance justify the purchase for anyone prioritizing long-term value.
Long-Term Supply Solution
With twenty fuses included, this pack ensures you have replacements ready for future repairs without needing to reorder frequently.
Reliable Ceramic Build Quality
High-grade ceramic materials and sand filling provide consistent performance and safety across all units in the pack.
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3. HiQltyla Microwave Fuse – Certified Safety for Microwave Repair
HiQltyla 20A 250V Microwave Fuse, 6x30mm Slow-Blow Ceramic Cartridge, 2Pcs
CSA safety certified
6x30mm fuse dimensions
20 Amp current rating
Quartz sand filled tube
HiQltyla delivers a certified and safe replacement fuse with strong performance credentials. Its CSA certification adds an extra layer of trust, ensuring it meets established electrical safety standards for residential appliance repair.
Pros
- Safety certification included
- Two-pack for backup
- Durable ceramic construction
- Safe arc prevention design
- One-year warranty offered
Cons
- Only two units per order
- Confirm part number first
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The slow-blow ceramic design helps protect sensitive microwave circuits from premature failure during startup surges. Each fuse is filled with quartz sand to minimize arc risks, offering safe and reliable circuit protection under stress.
Buyers should note the two-pack quantity, which is ideal for immediate repair and backup but not for bulk needs. Ensuring the old fuse matches the specs is critical to avoid installation issues.
This fuse suits safety-conscious users who prioritize certification and quality. The warranty and safety features make it a dependable choice for restoring microwave function with confidence.
CSA Safety Certification
Certified safety standards ensure the fuse meets rigorous testing requirements for electrical reliability and hazard prevention.
Arc-Resistant Construction
Quartz sand filling prevents dangerous arc formation during fuse failure, protecting your appliance from secondary damage.
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4. BlueStars Microwave Fuse – Premium Protection with Lifetime Warranty
BlueStars Upgraded 5-Pack WB27X10388 20A 20 Amp 250V Ceramic Microwave Fuse
Lifetime protection warranty
6x30mm fuse dimensions
20 Amp current capacity
Wear-resistant end caps
BlueStars stands out with a lifetime protection promise and upgraded design elements for long-lasting performance. Its five-pack configuration offers excellent value while ensuring you have replacements for future needs without buying single units again.
Pros
- Lifetime protection guarantee
- Five-piece value pack
- High-purity quartz sand fill
- Wear-resistant construction
- Multiple brand compatibility
Cons
- Warranty claim process may vary
- Check installation instructions
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The fuse uses high-purity quartz sand to prevent insulation breakdown and maintain electrical isolation during failures. Its ceramic tube and end caps are designed for durability, reducing wear and tear during installation and operation.
While the warranty coverage is appealing, users should review terms carefully to understand what defects are covered. Some have reported needing to contact support for replacements if a fuse fails shortly after installation.
This option is best for those who want added security with their purchase. The premium build and warranty make it a strong candidate for users seeking the most comprehensive protection for their appliance.
Lifetime Protection Coverage
A lifetime warranty ensures the manufacturer backs their product against defects, providing long-term peace of mind for buyers.
Upgraded Wear-Resistant Build
High-strength end caps and ceramic materials improve durability during installation and extended use in demanding environments.
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5. Budget Microwave Fuse – Affordable Repair Solution for Homeowners
5-Pack 20 amp Microwave Fuse 20a 250v, 0.24 x 1.2 inch for GE WB27X10388
5-piece value pack
6x30mm fuse dimensions
20 Amp current capacity
Direct universal replacement
This budget-friendly 5-pack offers solid performance without breaking the bank. Users report quick, successful repairs across various microwave brands, making it a practical choice for those focused on cost-effective fixes.
Pros
- Competitive pricing for value
- Five-pack quantity included
- Universal microwave fit
- Ceramic body construction
- Easy installation design
Cons
- Simpler build than premium
- Verify model compatibility
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Its ceramic tube and sand filling provide adequate protection for standard microwave circuits. The slow-blow design helps prevent unnecessary blows during startup, ensuring the fuse only reacts to true electrical faults or overloads.
While build quality is good, it may lack some premium features like extensive warranties or specialized coatings. For most household microwaves, this fuse performs reliably for years under normal operating conditions.
This fuse suits price-sensitive buyers who still want dependable results. Its balance of affordability and functionality makes it a go-to for quick DIY repairs without compromising on basic safety standards.
Affordable Five-Pack Value
A low cost per unit allows users to stock spares affordably, ensuring they have replacements ready when needed.
Universal Compatibility
Designed to fit a wide range of microwave brands, this fuse offers flexibility for various common household appliance models.
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6. Multi-Pack Ceramic Fuse – Versatile Fit for Multiple Brands
Microwave Fuse – 20 Amp 250V Ceramic Slow-Blow,Direct Replacement for GE WB27X10388, Universal Fit for Whirlpool, Kenmore & Most Microwave Brands,6mm x 32mm – 6PCS
6-piece multi-pack
6x30mm fuse dimensions
20 Amp current rating
Slow-blow time delay
This six-pack delivers solid universal compatibility across leading microwave brands, making it useful for households with multiple units or repair technicians. Users praise its reliable fit and straightforward installation for restoring appliance functionality.
Pros
- Six-unit quantity pack
- Direct GE replacement fit
- Wide brand compatibility
- Ceramic body safety
- Fast DIY installation
Cons
- Lower rating than some rivals
- Check size precisely before buy
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The slow-blow design ensures the fuse withstands temporary current surges during startup, which helps avoid unnecessary failures. Ceramic construction with sand filling improves safety by preventing arc formation during overload events.
While the rating is slightly lower than top picks, most users still find it dependable for standard repairs. Verifying dimensions before purchasing is key to ensuring smooth installation and avoiding fit issues in tight holders.
This option works well for those needing a flexible, multi-unit supply at a reasonable price. It provides good value for general repair needs across a range of popular microwave models.
Multi-Brand Compatibility
Designed to fit Whirlpool, Kenmore, and other major brands, offering flexibility for diverse appliance repair needs.
Reliable Slow-Blow Protection
Time-delay features prevent false blows during normal microwave start cycles, ensuring stable circuit protection over time.
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7. 10-Pack Ceramic Fuse – High-Volume Stock for Professionals
(Pack of 10) 20 Amp 250V Microwave Fuse Slow-Blow Time Delay Ceramic Fuses 6x30mm Compatible and Universal Replacement for GE WB27X10388 and Whirlpool Kenmore Other Microwaves
10-piece bulk pack
6x30mm fuse dimensions
20 Amp current capacity
Slow-blow time delay
Ideal for repair professionals or households with several appliances, this 10-pack ensures you never run out of replacements mid-job. Users report consistent performance and high satisfaction with its direct fit for common GE and compatible models.
Pros
- Ten-unit bulk supply
- High user satisfaction rating
- Direct GE part replacement
- Ceramic quartz sand fill
- Universal appliance compatibility
Cons
- Large quantity may not suit small needs
- Verify fit before bulk order
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Each fuse features a durable ceramic body filled with quartz sand to prevent dangerous arcs during failure. The slow-blow design ensures protection against true faults without unnecessary interruptions from normal surge currents.
Since it comes in bulk, buyers should confirm their appliance requirements match exactly before ordering. Proper sizing guarantees a secure fit and reduces risk of installation issues or electrical connection failures.
This product is best for those who need steady supply access for multiple repairs. Its proven reliability and high rating make it a practical choice for professional or heavy home use.
Professional-Grade Bulk Supply
A ten-unit pack ensures repair professionals have enough stock for multiple jobs without needing to reorder frequently.
Consistent Fit Across Models
Designed to match standard microwave fuse dimensions, ensuring secure installation and reliable electrical connection.
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8. BOJACK Bulk Fuse – Large-Scale Stock for Repair Needs
BOJACK Microwave Fuse 20AL250V 6x30mm 20A 250V Slow-Blow Ceramic Fuses 20 amp 250 Volt 0.24 x 1.18 Inch Ceramic Tube Time-delay Fuses (Pack of 20)
20-piece bulk pack
6x30mm fuse dimensions
20 Amp current capacity
Slow-blow time delay
BOJACK offers a massive 20-piece pack for those needing an extensive supply of fuses. Users appreciate the quality and consistency across units, with most reporting successful repairs and long-term reliability in microwave applications.
Pros
- Massive twenty-unit supply
- High-quality ceramic build
- Trusted brand reputation
- Slow-blow surge protection
- Plastic storage case included
Cons
- Best for large repair volumes
- Check fit before bulk order
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Each fuse features a sturdy ceramic tube filled with quartz sand to prevent arcs and ensure safe electrical isolation. The slow-blow design protects against unnecessary trips during normal microwave startup surges, improving overall performance stability.
With such a large quantity, it is crucial to confirm that all units will fit your appliance models before buying. A few users noted that slight variations may occur across brands or fuse holder sizes.
This product is ideal for professional technicians or bulk buyers needing many replacements at once. Its high rating and trusted quality make it a smart long-term investment for repair stock.
High-Volume Supply Solution
A twenty-unit pack ensures professionals never run out of stock during busy repair schedules or bulk replacement needs.
Trusted Brand Quality
BOJACK's reputation for quality control ensures consistent performance across all units in the bulk pack.
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9. Litoexpe Fuse – Large Stock for Repair Shops
Litoexpe 20-Pack 20A 250V Ceramic Time Delay Fuses
20-piece bulk pack
6x30mm fuse dimensions
20 Amp current capacity
Arc-Flash reduction design
Litoexpe delivers a massive 20-pack with a strong focus on safety and risk-free purchasing. Users highlight its ceramic construction and sand-filled design, which reduce the risk of arc flash and improve overall safety during failures.
Pros
- Twenty-unit bulk supply
- Arc-flash reduction design
- Risk-free shopping guarantee
- Ceramic body durability
- 30-day return policy
Cons
- Bulk pack not for small jobs
- Verify fit before ordering
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The time-delay feature allows fuses to handle temporary current spikes without blowing, ensuring that only sustained overloads trigger replacement. This helps prevent unnecessary replacements from minor surges during normal appliance use.
With a 30-day return policy, buyers can order confidently knowing there is a safety net for fit issues. Still, verifying dimensions before purchase remains essential for a smooth repair experience.
This option is best for repair shops or technicians needing steady supply access. Its safety features and buyer-friendly policies make it a trusted choice for large-scale or frequent replacement needs.
Enhanced Safety Design
Ceramic construction and quartz sand filling minimize arc flash risks, protecting both users and appliance components during electrical faults.
Risk-Free Buying Experience
A 30-day return policy ensures buyers can test fit and performance without worrying about being stuck with unsuitable fuses.
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10. Universal Microwave Fuse – Reliable Fit for OEM Standards
(Pack of 5) Microwave Replacement Fuse, 20A, 250V, Ceramic Fuse, Compatible and Universal Replacement for WB27X10388 and Other Microwaves
5-piece value pack
6x30mm fuse dimensions
20 Amp current capacity
OEM standard compatibility
This 5-pack offers universal compatibility with multiple part numbers, ensuring fit across a wide range of microwave models. Users appreciate its OEM-standard compliance and consistent performance for restoring functionality without needing original manufacturer parts.
Pros
- High user satisfaction rating
- Fits OEM standards well
- Multiple brand replacements
- Ceramic construction safety
- Fast shipping availability
Cons
- Limited pack size
- Check exact part match
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Its ceramic body ensures durability and electrical isolation, reducing risks during overloads or surges. The design maintains circuit integrity and prevents secondary damage, making it a reliable choice for standard repair tasks.
While packaging includes only five units, most users find this sufficient for immediate repair needs. Verifying that the part matches your exact model ensures a seamless installation without compatibility issues.
This fuse suits homeowners seeking dependable OEM-compliant replacements. Its fast availability and strong rating make it a practical option for quick, accurate appliance fixes.
OEM Standard Compatibility
Designed to meet OEM requirements, this fuse fits most major microwave brands without modifications.
Fast and Reliable Replacement
Quick shipping ensures users can restore their appliance quickly without long wait times for parts.
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Buying Guide – How to Choose the Best 20A 250V Ceramic Fuse for Microwave Oven
Selecting the correct fuse involves checking electrical specs, build quality, and model compatibility to ensure safety and proper appliance function.
Electrical Specifications
Ensure the fuse matches the required 20 Amp current and 250 Volt voltage ratings. Using a fuse with incorrect specs can lead to failure, fire risk, or damage to internal microwave components.
Always match the current and voltage ratings exactly to your appliance's original fuse specifications for safe operation.
Fuse Type
Microwave ovens require slow-blow (time-delay) fuses to handle startup surges without blowing unnecessarily. Fast-blow fuses may fail during normal operation, causing repeated repairs and appliance downtime.
Choose slow-blow fuses designed specifically for microwave circuits to ensure reliable performance during startup and normal use.
Physical Dimensions
Most microwave fuses measure 6x30mm (approximately 0.24×1.2 inches). Check your old fuse carefully to confirm dimensions before purchasing, as slight variations can prevent proper installation or lead to loose connections.
Verify the exact length and diameter to ensure a secure fit in your microwave's fuse holder.
Build Quality
Ceramic fuses with quartz sand filling offer superior safety by preventing arc formation during failure. This reduces fire risk and protects internal components from damage, compared to glass alternatives that may shatter.
Prioritize ceramic fuses with sand filling for enhanced safety and durability during electrical faults.
Compatibility
Ensure the fuse explicitly lists compatibility with your microwave brand or part number. Universal replacements often fit GE, Whirlpool, Kenmore, and other major brands, but always double-check before purchasing.
Confirm compatibility with your appliance model to avoid installation issues and ensure proper function.
Pack Size
Fuses come in packs ranging from single units to 20-piece bulk sets. Choose based on whether you need immediate repair supplies or want to stock spares for future needs.
Select a pack size that balances immediate repair needs with long-term spare availability.
Warranty
Some premium fuses offer warranties or guarantees against defects. While rare, these provide extra peace of mind and support if issues arise shortly after installation.
Check for warranty coverage when comparing higher-end fuses for added protection.
Safety Certifications
Look for CSA or other safety certifications to ensure the fuse meets recognized standards. This helps guarantee reliability and reduces risks during electrical failures.
Prioritize certified fuses to ensure compliance with electrical safety requirements.
How to Use and Care for Your 20A 250V Ceramic Fuse
Before replacing a fuse, always unplug the microwave from the power source. This prevents electrical shock and ensures safety while handling internal components.
Locate the fuse holder near the power cord or control panel, remove the old fuse, and insert the new one firmly into place, ensuring proper alignment.
After replacement, plug the microwave back in and test it. If the new fuse blows immediately, there may be a deeper issue requiring professional repair.
Frequently Asked Questions
What does 20A 250V mean on a microwave fuse?
20A means the fuse can handle up to 20 Amps of current, while 250V indicates it is rated for voltages up to 250 Volts. Matching these specifications is crucial to ensure proper protection for your microwave.
Why use a slow-blow fuse instead of fast-blow?
Slow-blow fuses can handle temporary current surges that occur when a microwave starts up. This prevents unnecessary blowing during normal operation while still protecting against sustained overloads.
How do I know if a fuse is blown?
A blown fuse often shows a broken internal wire or blackened ceramic body. If the fuse shows no visible damage but the microwave doesn't work, testing with a multimeter confirms if it has failed.
Can I replace a fuse with a different brand?
Yes, as long as the electrical specifications and dimensions match your microwave's requirements. Universal replacements from reputable brands work well across multiple models.
Why does my new fuse keep blowing?
Repeated fuse failure usually indicates an underlying issue such as a faulty magnetron, short circuit, or wiring problem. Simply replacing the fuse won't solve the root cause.
Are ceramic fuses safer than glass fuses?
Ceramic fuses with quartz sand fill are generally safer as they prevent arc formation and reduce fire risk during failure, unlike glass fuses that may shatter.
Final Thoughts on Choosing the Best 20A 250V Ceramic Fuse for Microwave Oven
The BOJACK microwave fuse stands out for its balanced performance and compatibility, while Frienda and Litoexpe offer excellent bulk value for frequent repairs or professional use.
Prioritize slow-blow design, correct dimensions, and verified compatibility with your appliance brand to ensure safe, reliable microwave operation without repeated repairs.
Verify current prices and stock before purchasing, as availability and costs may change. Always check your fuse specs to avoid fit issues.