5-Pack 20 amp Microwave Fuse
4.5Editor score
Universal GE replacement fit
Heavy duty ceramic tube
High purity quartz sand
In this guide
Microwave fuses are critical safety components that protect your appliance from electrical surges and internal short circuits. Choosing the right fuse ensures your microwave operates safely and efficiently without risking damage to other internal parts or creating fire hazards in your kitchen.
We compared ten top-rated microwave fuses based on compatibility, build quality, and customer feedback. Our analysis covers slow-blow ceramic types and standard replacements for major brands like GE, Kenmore, and Frigidaire to help you find the perfect match for your repair.
Each pick below shows key specifications, compatibility lists, and user ratings to guide your decision. Please note that prices and availability change frequently, so always verify the part number and voltage rating before finalizing your purchase to ensure a successful repair.
Top 3 Picks for Best Microwave Fuses
BOJACK Microwave Fuse 20a
4.6Editor score
250V slow-blow protection
Fits GE WB27X10388
Durable ceramic construction
Frienda 20 Pcs Microwave Fuse
4.7Editor score
High volume 20 pack
Safe sand filled design
Multi brand compatibility
Top 10 Best Microwave Fuses in 2026 Compared
The following table provides a side-by-side comparison of all ten selected microwave fuses to help you quickly identify the correct voltage, amperage, and model compatibility for your specific repair needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
BOJACK Microwave Fuse 20a
20A 250V rating
6×30 mm dimensions
Slow-blow ceramic type
GE WB27X10388 fit
4.6Editor score
Editor's Choice
Frienda 20 Pcs Microwave Fuse
20A 250V rating
6×30 mm dimensions
Slow-blow ceramic type
20 pack quantity
4.7Editor score
Best Budget
5-Pack 20 amp Microwave Fuse
20A 250V rating
6×30 mm dimensions
Slow-blow ceramic type
Universal brand fit
4.5Editor score
2 Pack 20A 125 Volt
20A 125V rating
Frigidaire compatibility
GE Kenmore fit
Standard ceramic fuse
4.2Editor score
BOJACK Microwave Fuse 20a Pack 10
20A 250V rating
6×30 mm dimensions
Slow-blow ceramic type
10 pack quantity
4.6Editor score
(Pack of 10) 20 Amp 250V
20A 250V rating
6×30 mm dimensions
Slow-blow ceramic type
10 pack quantity
4.6Editor score
5304509451 Microwave Fuse 5 Pack
20A 125V rating
Frigidaire models fit
6×30 mm dimensions
5 pack quantity
4.1Editor score
(Pack of 4) Microwave Oven Door Switch
Fuse 20A 250V
Switch 16A included
KW3A door switch
4 pack quantity
4.4Editor score
10Pcs 5304509451 20A 125V
20A 125V rating
Frigidaire models fit
6×30 mm dimensions
10 pack quantity
4.7Editor score
8 Pack 20A 125V Microwave Oven
20A 125V rating
6×30 mm dimensions
Hotpoint Frigidaire fit
8 pack quantity
4.6Editor score
1. BOJACK Microwave Fuse 20a – Best Overall Microwave Fuse
BOJACK Microwave Fuse 20a
20 Amp 250 Volt rating
6×30 mm ceramic tube size
Slow-blow time delay type
Fits GE WB27X10388
This BOJACK fuse is a top rated choice for repairing common microwave failures. It carries a strong 4.6 star rating from users who value its reliability. The slow-blow design protects your circuitry from sudden surges without blowing unnecessarily during normal operation cycles.
Pros
- High quality slow-blow protection
- Universal replacement for GE
- Durable ceramic construction
Cons
- Single unit packaging limit
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The ceramic body and quartz sand fill provide excellent insulation and thermal stability. This ensures the fuse performs consistently even under the high heat conditions inside a microwave oven. Its specific dimensions match the standard 6×30 mm requirement found in many GE and Kenmore models.
While it is a single unit, the quality justifies the price for a focused repair. Users appreciate the direct fit for part number WB27X10388 which simplifies the search process. The slow-blow feature is critical for preventing false trips that occur with standard fast-blow fuses.
Homeowners looking for a direct replacement for their GE microwave should consider this option first. It balances affordability with the safety features needed to protect expensive internal components. Ensuring you have the correct voltage rating is the final step before installation.
Superior Thermal Stability
The heavy duty ceramic tube withstands high internal temperatures better than glass alternatives.
Reliable Surge Protection
Slow-blow technology allows temporary current spikes without interrupting normal cooking cycles.
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2. Frienda 20 Pcs Microwave Fuse – Best Premium Microwave Fuse
Frienda 20 Pcs Microwave Fuse
20 Amp 250 Volt rating
6×30 mm ceramic tube size
Slow-blow time delay type
20 pieces in pack
This Frienda pack offers exceptional value for households that frequently repair appliances or manage multiple microwaves. With a 4.7 star rating, it stands out for its consistent quality and safety features. The slow-blow ceramic design ensures your circuits are protected from damage during power fluctuations.
Pros
- High volume 20 pack value
- Safe sand filled design
- Compatible with Kenmore
Cons
- Generic brand packaging
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The package includes twenty individual fuses which is a generous quantity for the price. Each fuse is filled with sand to prevent glass shards if it blows during operation. This safety feature is essential for protecting your hands and the internal components of the microwave.
The compatibility list includes GE and Kenmore models which covers a large segment of the market. However, always verify your specific part number before ordering to ensure the physical dimensions match your unit. The high amp rating handles standard household microwave loads effectively.
Repair technicians and DIY enthusiasts will appreciate having a surplus of spares on hand. This reduces downtime if a second failure occurs or if you need to swap units across different appliances. It is a practical investment for maintaining kitchen equipment over the long term.
Enhanced Safety Design
Sand filling prevents glass fragments from scattering when the fuse element blows.
Cost Effective Bulk Purchase
Twenty pieces provide long term availability for emergency repairs or multiple units.
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3. 5-Pack 20 amp Microwave Fuse – Best Budget Microwave Fuse
5-Pack 20 amp Microwave Fuse
20 Amp 250 Volt rating
6×30 mm ceramic tube size
Slow-blow time delay type
5 pieces in pack
This five-pack provides a cost-effective solution for basic microwave repairs without sacrificing essential safety features. It holds a solid 4.5 star rating from users who confirm it works well in various microwave models. The 20A 250V rating is standard for most residential countertop and built-in units.
Pros
- Affordable pricing for 5 pack
- Universal brand compatibility
- Direct GE replacement fit
Cons
- Variable quality control
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The direct replacement capability for GE part numbers like WB27X10388 makes it easy to identify. It also lists compatibility with Whirlpool and KitchenAid which broadens its utility. The ceramic construction ensures durability and resistance to heat degradation over time.
While it is budget-friendly, the quality is sufficient for occasional home repairs. The five-unit pack ensures you have backups without the bulk of larger sets. Just ensure your microwave requires 250V before purchasing as some models use lower voltage fuses.
Budget-conscious buyers looking for a quick fix will find this option appealing. It eliminates the need to visit a store by providing a reliable online solution. Always check the old fuse voltage rating carefully to avoid mismatching specifications.
Universal Brand Fit
Supports major brands like GE Whirlpool and Kenmore for versatile repairs.
Practical 5 Pack Value
Five units offer enough spares for a household without bulk storage.
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4. 2 Pack 20A 125 Volt – Standard 125V Microwave Fuse
2 Pack 20A 125 Volt
20 Amp 125 Volt rating
Frigidaire part number match
6×30 mm dimensions
2 pieces in pack
This fuse is specifically rated for 125V which is important for certain legacy or specific model microwaves. With a 4.2 star rating it serves as a reliable replacement for parts like 5304509451. The 20A capacity handles standard loads but verify your voltage needs before buying.
Pros
- 125V rating for specific models
- Fits Frigidaire GE Kenmore
- Compact packaging
Cons
- Limited 2 pack quantity
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It covers a wide range of Frigidaire and GE models which simplifies the selection process for those brands. The ceramic body provides necessary insulation against internal heat and voltage spikes. Installation is straightforward if you follow safety protocols like disconnecting power first.
The two-pack quantity is minimal compared to bulk options but sufficient for a single repair. Users note that if fuses blow repeatedly it may indicate a door switch issue rather than a fuse problem. This diagnostic hint helps save money by targeting the real cause.
Owners of older 125V models will find this essential since higher voltage fuses may not trip correctly. It ensures that the safety cutoff functions at the correct current threshold. Always match both the voltage and amperage to your original component.
Voltage Specific Fit
Designed for 125V systems common in Frigidaire and GE microwaves.
Diagnostic Guidance
Includes tips to check door switches if fuse issues persist.
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5. BOJACK Microwave Fuse 20a Pack 10 – 10-Pack Ceramic Fuse
BOJACK Microwave Fuse 20a Pack 10
20 Amp 250 Volt rating
6×30 mm ceramic tube size
Slow-blow time delay type
10 pieces in pack
This ten-pack from BOJACK delivers the same trusted quality as the single unit but with better long term value. The 4.6 star rating reflects user satisfaction with its performance in protecting microwave circuitry. It is ideal for those who want spares for future repairs.
Pros
- Reliable BOJACK brand quality
- 10 piece bulk value
- Direct GE WB27X10388 fit
Cons
- Higher price than smaller packs
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The slow-blow feature protects sensitive components from temporary surges that often happen during power flickers. It fits GE part WB27X10388 directly which reduces the guesswork during installation. The ceramic tube ensures it withstands the high temperatures inside your appliance.
Buying in bulk is cost effective if you own multiple units or anticipate needing replacements. The packaging is secure to prevent breakage during shipping. Ensure you are replacing a 250V fuse as this model does not support lower voltage requirements.
For serious DIYers or landlords managing multiple properties this pack reduces frequent ordering hassles. It keeps essential spares on hand so you can fix issues quickly. Always store them in a dry place to maintain their electrical integrity.
Bulk Value for Repairs
Ten units offer savings and convenience for multiple appliance repairs.
Trusted Brand Reliability
BOJACK maintains consistent quality control across their fuse range.
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6. (Pack of 10) 20 Amp 250V – Value 10-Pack Fuse
(Pack of 10) 20 Amp 250V
20 Amp 250 Volt rating
6×30 mm ceramic tube size
Slow-blow time delay type
10 pieces in pack
This ten-pack offers a competitive price point for those needing multiple replacement fuses. With a 4.6 star rating it is praised for matching original equipment specifications closely. The slow-blow design ensures your microwave runs smoothly without nuisance trips during normal use.
Pros
- Solid bulk pricing option
- Multi brand compatibility list
- Quartz sand filled body
Cons
- Generic branding
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It works with GE Whirlpool and Kenmore which covers most major brands. The ceramic body with quartz sand provides the insulation needed for high voltage environments. This construction helps prevent internal arcing which could damage other parts of the microwave.
The universal fit simplifies the process for users unsure of the exact part number. It is a practical choice for stocking up in a tool kit. Always confirm the voltage before ordering to ensure it matches your specific appliance model.
Homeowners managing several appliances will find this bulk pack convenient and affordable. It reduces the risk of running out during an emergency repair. Keep the packaging for reference when identifying compatible models in the future.
Universal Multi Brand Support
Compatible with GE Whirlpool and Kenmore for versatile application.
Quartz Sand Insulation
Sand filling enhances thermal and electrical stability inside the tube.
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7. 5304509451 Microwave Fuse 5 Pack – 125V Replacement
5304509451 Microwave Fuse 5 Pack
20 Amp 125 Volt rating
Frigidaire part number match
6×30 mm dimensions
5 pieces in pack
This five-pack targets specific 125V models found in Frigidaire and GE microwaves. The 4.1 star rating indicates reliability for these particular units when matched correctly. It replaces common part numbers like 5304509451 which simplifies the ordering process for owners.
Pros
- Specific 125V model fit
- Fits Frigidaire GE Kenmore
- Compact 5 pack quantity
Cons
- Limited voltage versatility
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The 20A rating is standard for these lower voltage systems. It ensures that the fuse blows only when the current exceeds safe limits. The ceramic construction provides the necessary insulation to handle the high heat inside your microwave cabinet.
It is essential to verify the voltage rating on your old fuse before purchasing. Using a 250V fuse in a 125V circuit can lead to improper operation. This specific pack ensures compatibility for legacy models that require the lower voltage.
Owners of older models will appreciate the focus on specific part numbers. It reduces the guesswork often associated with universal replacements. Keep a spare handy in case of future electrical surges that damage the component.
Specific Legacy Model Fit
Designed for 125V Frigidaire and GE models requiring this voltage.
Part Number Accuracy
Replaces 5304509451 directly for quick identification.
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8. (Pack of 4) Microwave Oven Door Switch – Fuse Switch Kit
(Pack of 4) Microwave Oven Door Switch
Fuse 20A 250V included
Switch 16A KW3A model
Ceramic fuse tube size
4 pieces in pack
This kit addresses both the fuse and door switch which are common failure points in microwaves. The 4.4 star rating suggests users find it effective for resolving persistent power issues. It includes four fuses and a door switch to fix both components in one repair.
Pros
- Includes door switch and fuse
- KW3A switch model match
- Prevents common failure loop
Cons
- Complex for beginners
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The switch is a KW3A model which is standard for many GE and Frigidaire units. Replacing both parts can stop the cycle of blowing fuses caused by a bad switch. This comprehensive approach saves time compared to buying parts separately.
The fuses in the kit are 20A 250V which matches most standard units. The ceramic construction ensures durability under heat and electrical load. This option is best for those confident in diagnosing electrical issues in their appliances.
DIY repairers dealing with a microwave that won't turn on may find this kit valuable. It covers the most common reasons for loss of power. Always discharge the capacitor before attempting any internal repairs to ensure safety.
Complete Repair Kit
Includes both fuse and door switch for comprehensive troubleshooting.
KW3A Switch Compatibility
Switch matches standard KW3A part numbers for reliable fit.
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9. 10Pcs 5304509451 20A 125V – High Capacity 125V Pack
10Pcs 5304509451 20A 125V
20 Amp 125 Volt rating
6×30 mm dimensions
Frigidaire GE model fit
10 pieces in pack
This ten-pack provides ample supply for owners of 125V microwaves. The 4.7 star rating indicates high reliability and user satisfaction. It is specifically tailored for GE and Frigidaire models using part number 5304509451.
Pros
- High volume 125V supply
- Strong 4.7 rating score
- Direct part replacement fit
Cons
- Voltage specific limit
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The 20A 125V rating ensures precise protection for these specific models. Using the correct voltage prevents issues with tripping or non-operation. The ceramic design offers thermal stability that maintains fuse integrity over years of use.
Having ten fuses on hand ensures you can repair multiple units or have spares for unexpected failures. It is a smart choice for those managing rental properties or several kitchen appliances. Verify your model voltage before purchasing to avoid mismatches.
Homeowners with older models will benefit from the specific voltage matching. It simplifies the repair process by eliminating guesswork. Always check the old fuse rating to ensure you buy the correct replacement.
Large Supply Stocking
Ten pieces provide ample backup for multiple or frequent repairs.
Specific Voltage Precision
125V rating ensures proper tripping for specific legacy models.
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10. 8 Pack 20A 125V Microwave Oven – 6mm 30mm 125V Fuse
8 Pack 20A 125V Microwave Oven
20 Amp 125 Volt rating
6×30 mm exact size
GE Frigidaire Hotpoint fit
8 pieces in pack
This eight-pack offers precise dimensions for 125V microwaves with a 4.6 star rating. It is ideal for GE Frigidaire and Hotpoint models requiring 6mm by 30mm fuses. The markings make it easy to verify the 20A 125V rating quickly.
Pros
- Precise 6x30mm dimensions
- Good 125V bulk value
- Easy identification markings
Cons
- Not universal 250V
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The high current capacity protects powerful microwaves from internal overloads. If a power surge occurs the fuse blows to cut off power and save components. This prevents expensive repairs to the magnetron or control board later on.
The eight-unit pack balances bulk value with manageable storage size. It ensures you have spares without overstocking. Always check your appliance model to confirm 125V compatibility before purchasing this specific type.
Owners of Hotpoint and Frigidaire units will find this pack a reliable solution. It simplifies the replacement process with clear labeling and fit. Keep it in a safe place to access easily when your microwave stops working.
Precise Dimension Match
Exact 6x30mm fit prevents installation errors in tight compartments.
Clear Voltage Identification
Marked with 20A 125V for quick verification during repair.
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Buying Guide – How to Choose the Best Microwave Fuse
Selecting the right fuse involves checking multiple factors to ensure safety and compatibility with your appliance.
Voltage Rating
Microwave fuses come in 125V or 250V ratings. Always check your old fuse to match this number exactly.
Choosing the wrong voltage can prevent the fuse from blowing during a short circuit.
Amperage Capacity
The amp rating such as 20A determines how much current the fuse can handle before blowing.
Using a higher amp fuse can lead to component damage because it won't blow when needed.
Fuse Type
Slow-blow fuses allow temporary current spikes without tripping which is vital for microwaves.
Fast-blow fuses may trip too easily and cause nuisance outages during normal cooking.
Dimensions
Microwave fuses often measure 6x30mm which is different from standard glass fuses.
Verify both diameter and length to ensure the fuse fits securely in its holder.
Brand Compatibility
Listed brands like GE and Kenmore indicate where the fuse fits but universal options exist.
Always confirm your appliance model number against the product compatibility list.
Construction Material
Ceramic tubes with quartz sand are safer than glass because they contain broken pieces.
Look for durable ceramic construction to withstand high internal microwave temperatures.
Pack Quantity
Buying in packs of ten or twenty saves money compared to single units.
Keep spares on hand to minimize downtime if a failure occurs again.
Installation Safety
Always unplug your microwave and discharge the capacitor before replacing a fuse.
Safety first ensures you avoid electric shock while working on internal components.
How to Use and Care for Your Microwave Fuse
Before starting, unplug the microwave from the wall and wait for the capacitor to discharge. Use a multimeter to confirm power is off before touching internal parts.
Open the microwave casing by removing screws and carefully locate the fuse near the power cord. Take a photo of the wiring to ensure you reconnect everything correctly.
Replace the old fuse with the new one matching the same voltage and dimensions. Close the casing securely and plug the microwave back in to test functionality.
Frequently Asked Questions
What are the signs a microwave fuse is blown?
Your microwave may not turn on at all or the display might remain dark. Check the fuse with a multimeter to see if it shows continuity. If it reads infinity, the fuse is likely blown.
Can I replace a microwave fuse myself?
Yes you can replace it if you have basic DIY skills. Ensure you unplug the unit and discharge the high voltage capacitor before opening the casing. Always follow safety warnings to avoid electric shock.
Why does my microwave fuse blow repeatedly?
Repeated blowing often indicates a faulty door switch or internal short circuit. Check the door switch for continuity before replacing fuses. If the switch is bad, fixing it stops the fuse from blowing again.
Are ceramic fuses better than glass ones?
Ceramic fuses are safer for microwaves because they contain sand that prevents glass shards. They also handle heat better than glass which is important in high temperature environments.
How do I find the right part number?
Look at the old fuse for a number like WB27X10388 or check your microwave manual. Use this number to search for compatible replacements online or at appliance parts stores.
What happens if I use a fuse with different amperage?
Using a higher amp fuse risks damaging your microwave components. The fuse might not blow when current spikes occur leading to internal damage. Always match the original amp rating.
How long does a microwave fuse last?
A fuse usually lasts years but can blow due to power surges or internal shorts. If your microwave is old check the fuse first if it stops working suddenly.
Do all microwaves use 20A fuses?
Most use 20A but some may differ based on power needs. Always check your old fuse rating to be sure. Using the wrong amp can lead to safety issues.
Final Thoughts on Choosing the Best Microwave Fuses
We reviewed ten quality fuses that fit most major brands and voltage requirements. Our top picks cover various needs from budget single units to bulk packs for multiple repairs.
Prioritize safety by matching both voltage and amperage to your original component. Always choose a slow-blow ceramic fuse to protect sensitive internal circuitry.
Prices and availability change so check current listings before ordering to ensure you get the right fit for your microwave repair needs.