Supco Microwave Fast-Blow Ceramic Fuse, 20A 250V - CF20FB

Supco Microwave Fast-Blow Ceramic Fuse, 20A 250V - CF20FB

Restore microwave power protection with this aftermarket replacement Supco Microwave Fast-Blow Ceramic Fuse, 20A 250V - CF20FB. This 20 amp, 250 volt fast-blow ceramic fuse opens quickly when an overcurrent condition occurs, helping protect the microwave circuit from electrical damage.

Compatibility: Used in select microwave and domestic appliance fuse applications where a 20A 250V fast-blow ceramic fuse is specified.

This part commonly replaces previous part numbers including PP0408W.

Fitment / What To Verify: Match the old fuse by amperage, voltage, body style, terminal/quick-connect style, and fast-blow rating. Do not substitute a slow-blow fuse where a fast-blow fuse is required.

Please confirm fitment with your appliance model number before ordering.

Is it time to replace?

• Common Symptoms: Microwave has no power, display is blank, or the fuse is open after a short or door-switch fault.
• Visible/Sensory Cues: Blown continuity reading, darkened fuse body, loose fuse clips, or repeated fuse failure immediately after replacement.

Pro Tip: If the new fuse blows immediately, inspect door switches, monitor switch alignment, wiring, and shorted high-voltage components before installing another fuse.

Technical Specifications

Legacy part number(s)/code(s): W10138793, 4393146

Please note: These legacy parts have been replaced by this item. They may not look exactly the same, but the manufacturer of these appliances has assured us that they will function properly.

If you have questions, please message us before ordering so we can address your concerns. Please review our Return Policy before purchasing.