XPARTCO Microwave High Voltage Fuse — 5KV 800mA (0.8A)
Product Description
This XPARTCO high voltage fuse is a direct replacement for the 5KV 800mA (0.8A) glass fuse used in Samsung and compatible microwave ovens. The high voltage fuse sits in the microwave's high voltage circuit between the transformer and magnetron assembly. Its job is to protect the magnetron and transformer from catastrophic damage in the event of a short circuit or surge — when it blows, the microwave will appear completely dead or will run but produce no heat.
This is one of the most common and affordable microwave repairs. The fuse typically costs only a few dollars and is frequently the reason a microwave suddenly stops heating. Compatible with Samsung microwaves using DE91-70060A and related part numbers.
Quick Answer
If your microwave runs but won't heat — or is completely dead — a blown high voltage fuse is the most common cause. This 5KV 800mA fuse replaces DE91-70060A, DE91-70054A, DE91-70060C, and DE91-70061B for Samsung microwaves. Always discharge the capacitor before touching any internal components.
Common Symptoms This Part Fixes
- Microwave runs (light on, turntable spins) but produces no heat
- Microwave is completely dead — no lights, no response
- Microwave trips the circuit breaker or blows the house fuse when started
- Microwave stops heating mid-cycle
- Burning smell followed by loss of heating function
Replaces Part Numbers
XP5KV08A replaces DE91-70060A, AP4232254, PS4235622, DE91-70054A, AP4232252, PS4235616, DE91-70060C, DE91-70061B, EAF36358312
Compatibility
Compatible with Samsung microwave ovens using 5KV 800mA (0.8A) high voltage fuses, including models using part numbers DE91-70060A, DE91-70054A, DE91-70060C, and DE91-70061B. Verify your model number and existing fuse rating before ordering — microwave HV fuses come in multiple voltage and amperage ratings and must be matched exactly.
Key Features
- Rated 5KV / 800mA (0.8A) — matches OEM fuse specification
- Replaces DE91-70060A, DE91-70054A, DE91-70060C, and DE91-70061B
- Glass fuse body with leads — direct plug-in replacement
- Protects magnetron and transformer from surge damage
- One of the most common and least expensive microwave repairs
Specifications
| Part Number |
XP5KV08A |
| OEM Part Number |
DE91-70060A |
| Part Type |
High Voltage Fuse |
| Voltage Rating |
5KV (5,000V) |
| Current Rating |
800mA (0.8A) |
| Compatible Brands |
Samsung, LG and more |
| Application |
Microwave oven high voltage circuit |
⚠ HIGH VOLTAGE WARNING — Read Before Servicing: Microwave ovens contain a high voltage capacitor that stores a lethal charge of up to 2,100 volts even after the unit is unplugged. You must discharge the capacitor before touching any internal components. Unplug the microwave, wait at least 2 minutes, then discharge the capacitor across its terminals using an insulated screwdriver or resistor before proceeding. If you are not comfortable working with high voltage components, have this repair performed by a qualified technician.
Frequently Asked Questions
My microwave runs but doesn't heat — is the high voltage fuse the problem?
A blown high voltage fuse is the most common cause of a microwave that runs but won't heat. When the HV fuse blows, the high voltage circuit is interrupted — the control board still powers up (lights, display, turntable) but no power reaches the magnetron. Visually inspect the fuse: a blown HV fuse will often show a broken filament, blackening inside the glass, or burn marks on the leads.
Why did the high voltage fuse blow? Will it blow again?
The HV fuse blows to protect the magnetron and transformer from damage caused by arcing, a failing magnetron, or a shorted diode. If you replace only the fuse without diagnosing the underlying cause, the new fuse may blow again quickly. After installing the replacement fuse, test the microwave: if the new fuse blows immediately or the microwave still won't heat, the magnetron or high voltage diode likely also needs to be tested and potentially replaced.
Does it matter what amperage rating the replacement fuse is?
Yes — the fuse rating must match exactly. Never substitute a higher-amperage fuse to "fix" a blowing fuse problem; a higher-rated fuse will not protect the magnetron and transformer and can allow them to burn out instead. This fuse is 800mA (0.8A) at 5KV. Confirm your existing fuse rating before ordering — the rating is printed on the fuse body or listed in your model's parts diagram.
Is this an OEM part?
No. This is an XPARTCO aftermarket part sold as a value-priced compatible replacement. It is not manufactured by or affiliated with Samsung Electronics. If you require a genuine Samsung OEM fuse, we carry those separately.
What tools do I need to replace the high voltage fuse?
You will need a Phillips screwdriver to remove the microwave's outer cabinet, an insulated screwdriver or discharge tool to safely discharge the high voltage capacitor, and needle-nose pliers to remove the fuse leads from their connectors. Work gloves and safety glasses are strongly recommended. Never work inside a microwave without first confirming the capacitor has been discharged.
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