40MM 5KV MICROWAVE FUSES

40mm 5kV High-Voltage Microwave Fuses Precision Appliance Protection 

Our 40mm High-Voltage Fuses are specialized safety components specifically designed for the demanding electrical environment of microwave ovens. Rated for 5kV, these fuses provide critical protection for the high-voltage transformer and magnetron circuit, ensuring that power is instantly cut if an electrical surge or component failure occurs.

Available Precision Ratings

To ensure exact compatibility with your appliance's specifications, we offer these fuses in four precise amperage values:

• 0.6 Amp

• 0.75 Amp

• 0.8 Amp

• 0.9 Amp

Key Performance Features

• High-Voltage Insulation: Specifically rated for 5000V (5kV), these fuses feature a long 40mm glass body to safely prevent high-voltage arcing across the fuse after it has blown.

• Visible Internal Element: The clear glass tube allows for immediate visual inspection to confirm if the internal filament has broken due to a fault.

• Precision Spring Element: Designed with a coiled internal spring that ensures a fast and clean break during an overcurrent event, protecting sensitive high-voltage components.

• Standardized 40mm Length: Fits most standard high-voltage fuse holders found in residential and commercial microwave ovens.

• Nickel-Plated End Caps: Features highly conductive end caps for stable electrical contact and resistance against corrosion.

Technical Specifications

• Length: 40mm.

• Voltage Rating: 5kV (5000V).

• Fuse Type: Fast-acting Glass Cartridge with spring element.

Top 3 Customer Questions & Concerns ‍

 Can I use a regular 250V fuse in my microwave? No. Standard 250V fuses are too short and cannot handle the 2000V+ generated by a microwave transformer. Using a standard fuse can cause a dangerous continuous electrical arc even after the fuse "blows," potentially leading to a fire.

 Does the amperage have to be exact? Yes. Microwave circuits are finely tuned. Replacing a 0.6A fuse with a 0.9A fuse might allow too much current to flow, damaging your expensive magnetron or transformer. Always match the amperage printed on the old fuse.

Why did my fuse blow as soon as I started the microwave? A blown high-voltage fuse is often a symptom of a larger problem, such as a shorted high-voltage capacitor, a faulty diode, or a failing magnetron. If a new fuse blows immediately, the other high-voltage components should be tested by a professional.