Best 20A Slow-Blow Fuses for Microwave Repairs
Choosing the right 20A slow-blow fuse is essential for protecting high-power appliances like microwaves and other electrical equipment. This guide presents five reliable options, highlighting their construction, voltage ratings, and key features to help you pick a safe, compatible replacement. The products below are commonly used in micro ovens and other devices that require time-delay fuses to handle peak surges without premature failure.
| Product | Brand | Size | Amp Rating | Voltage |
|---|---|---|---|---|
| BOJACK Microwave Fuse | BOJACK | 6×30 mm | 20A | 250V |
| YOLISTIC Pack of 10 | YOLISTIC | 6×30 mm | 20A | 250V |
| BOJACK T20AL250V | BOJACK | 6×30 mm | 20A | 250V |
| Litoexpe 20-Pack | Litoexpe | 6×30 mm | 20A | 250V |
| 10 Pack Microwave Fuses | Dpttmlaci | 6×30 mm | 20A | 250V |
Note: Each option is described with its basic construction and safety features. Always verify compatibility with your device model and confirm the size, current, and voltage before replacing a fuse.
BOJACK Microwave Fuse 20A Ceramic Fuse
BOJACK 20A, 250V slow-blow fuse with a ceramic body and compact 6×30 mm size. Designed for microwave protection, this fuse matches WB27X10388 and similar models. Key construction includes a ceramic tube and end caps for wear resistance, with a 0.24 x 1.2 inch (6×30 mm) footprint. Features enhance safety during overloads, while maintaining reliable current interruption.
YOLISTIC 20 Amp Slow-Blow Time Delay Fuse (Pack of 10)
Each fuse in this 10-pack features a ceramic tube with alloy and nickel-plated brass components, rated for 250V and 20A. The 6x30mm size makes it compatible with standard microwave and high-power circuits. Time-delay design helps handle inrush currents without nuisance blowing, suitable for appliances and electrical equipment requiring reliable protection.
BOJACK T20AL250V 6×30 mm, 20A Slow-Blow (Pack of 20)
This pack provides 20 high-quality slow-blow fuses with a 6×30 mm footprint, rated at 20A and 250V. Designed for safety in microwaves and other high-current devices, the glass/ceramic construction helps reduce arc risk and protect circuitry during overloads. A practical option for multiple replacements across devices.
Litoexpe 20-Pack 20A 250V Ceramic Fuses
These ceramic fuses use a ceramic body with nickel-plated brass ends, filled with quartz sand for insulation. The 6×30 mm, 20A, 250V rating aligns with many microwave fuses. The product emphasizes safety benefits like reduced arc flashover compared to glass-bodied fuses, with a carrying case included for organization and transport. Verify size and voltage prior to ordering.
10 Pack Microwave Fuses 20A 250V (Dpttmlaci)
This box contains ten 20A 250V ceramic fuses suitable for GE, Whirlpool, Kenmore, and other microwaves. It lists compatibility with multiple WB27X10388 models and similar units. The ceramic body is designed to manage heat better and reduce overcurrent-related failures, offering a reliable universal replacement option for various brands.
Buying Guide: Key Considerations For 20A Slow-Blow Fuses
- Size and fit: Most microwave and high-power fuses use a 6×30 mm (D=6 mm, L=30 mm) footprint. Confirm the exact size and terminal type in your device’s service manual or the existing fuse before purchasing.
- Amp rating and voltage: Standard replacements are 20A at 250V. Matching these ratings is essential to prevent nuisance blows or insufficient protection.
- Material and construction: Ceramic fuses offer better heat resistance and arc-suppression than glass-bodied variants. They reduce the risk of arc flash and metal spray during severe overloads.
- Time-delay vs. fast-acting: Slow-blow (time-delay) fuses handle inrush currents common in microwaves and motors. They protect equipment without blowing during short surges, unlike fast-acting types.
- Durability and safety features: Ceramic tubes with quartz sand insulation and wear-resistant end caps increase durability in hot or humid environments. Pack quantities can help with ongoing maintenance and multiple replacements.
- Brand compatibility and model coverage: Some fuses are marketed as universal replacements for widely used models (WB27X10388 and related), but always verify compatibility with your exact appliance model and serial.
- Replacement process: When replacing a fuse, unplug the device and allow it to cool. Follow the manufacturer’s disassembly guidelines and ensure the fuse is properly seated and rated for the circuit.
- Warranty and safety standards: Look for fuses that meet recognized safety standards and come from reputable brands to ensure consistent performance and safer operation over time.