Choosing a reliable 250V 20A fuse is essential for microwave safety and performance. This guide covers ceramic and glass slow-blow options and fast-blow variants, highlighting compatibility, safety ratings, and durability. Each product below is a common replacement for mainstream microwave models and ensures quick, secure restoration of operation after a fuse blow.
| Product | Type | Voltage & Current | Notes |
|---|---|---|---|
| BOJACK Microwave Fuse 20A Ceramic | Ceramic | 250V, 20A | Slow-blow, universal replacement |
| 10 Pack 20A 250V Microwave Fuses | Ceramic/Glass | 250V, 20A | Multi-pack, compatible with WB27X10388 |
| Microwave 20A 250V Fuse, Slow-Blow | Ceramic Cartridge | 250V, 20A | 2-pack, slow-blow design |
| BOJACK 5x20mm 20A Fast-Blow Fuses | Glass | 250V, 20A | Fast-blow option |
| Bussmann BP/FRN-R-20 20A | Dual Element Time-Delay | 250V, 20A | Motor protection, UL listed |
BOJACK Microwave Fuse 20A Ceramic – 250V
Fuse Dimension: 6×30 mm. Current rating: 20A. Voltage rating: 250V. Ceramic body provides durability and improved insulation, reducing arc risk during overload events. Suitable as a universal replacement for common microwave models including WB27X10388 and similar units. Always verify compatibility with your microwave model and installation procedure before replacing a fuse.
10 Pack 20A 250V Microwave Fuses – Ceramic
This multi-pack includes multiple 20A, 250V fuses designed for compatibility with GE WB27X10388 and many Whirlpool, Kenmore, LG, Frigidaire, and other brands. The series uses a ceramic body with end caps for longevity and stable performance under surge or overheating conditions. Safety note: fuses protect the microwave by interrupting current when overheating or faults occur; replace only with identical ratings and type.
Microwave 20 Amp 250V Fuse, Slow-Blow – 2 Pcs
Features a slow-blow design to accommodate brief surge currents common in microwaves. Ceramic tube with quartz sand inside helps suppress arcs and provides stable insulation during operation. Includes two fuses per package, designed to replace standard 20A, 250V microwave fuses across compatible models. Ensure proper replacement procedure and confirm the model compatibility before installation.
BOJACK 5x20mm 20A Fast-Blow Fuses – Pack of 20
Fast-blow glass fuses with 5x20mm dimensions and a 20A, 250V rating. Suitable for circuits requiring quick interruption of excessive current. This pack offers multiple units suitable for light replacements or stocking spare parts. When replacing, check the fuse type recommended by the microwave manufacturer to avoid mismatches with time-delay requirements or arc suppression needs.
Bussmann BP/FRN-R-20 20A Time-Delay Fusetron
Dual-element, time-delay fuse designed for motor and main panel protection. UL listed and compatible with circuits subject to temporary motor overloads and surge currents. Helps protect motors from burnout in three-phase and other configurations. This option suits users needing robust protection for appliances and equipment beyond standard microwaves.
Buying Guide: Key Considerations For 250V 20A Microwave Fuses
Choosing the right fuse involves assessing fuse type, timing characteristics, and compatibility with your microwave or appliance. Consider the following perspectives:
- Fuse type: Slow-blow (time-delay) fuses handle brief surges without tripping, suitable for microwaves during motor start or high-load events. Fast-blow fuses react quickly to overcurrent but may trip on normal startup surges in some designs.
- Ceramic vs. glass: Ceramic fuses generally offer higher heat resistance and durability, with quartz sand inside improving insulation. Glass fuses are common and cost-effective but may be more fragile in rough environments.
- Voltage and current ratings: Ensure the replacement matches the original 250V and 20A rating. Using a different rating can compromise safety and equipment protection.
- Physical size and fit: Typical microwaves use a 6×30 mm (0.24×1.2 in) or similar cartridge format. Confirm your model’s fuse dimensions before purchasing.
- Model compatibility: Some fuses are marketed as universal replacements for WB27X10388 and related models. Cross-check your microwave’s model number and any listed compatible variants to avoid incorrect parts.
- Safety and certification: Look for UL or CSA listings and manufacturer guidance. Proper installation reduces the risk of arc, overheating, or electrical fires.
- Replacement procedure: Always unplug the appliance, discharge any capacitors safely, and follow the manufacturer’s service manual. If in doubt, consult a qualified technician.
- Availability: Bulk packs can reduce replacement downtime and ensure you have on-hand spares for future maintenance.