LG Microwave Oven Fuse,Time Delay

The LG Oven-Range Time Delay Fuse (Part Number: 3B74133P) is an authentic original equipment manufacturer (OEM) replacement power protection component designed for LG microwave ovens and range appliances. Installed on the main power entry circuit, this slow-blow ceramic cartridge fuse is engineered to withstand brief high-current inrush surges when high-voltage components engage, while instantly cutting power if a sustained short circuit occurs.

Key Features

• Slow-Blow Time-Delay Action: Specifically calibrated to handle startup power surges without nuisance tripping during normal operation.

• Shatter-Resistant Ceramic Body: Heavy-duty ceramic casing provides superior thermal resistance and prevents dangerous arcing or body fracturing during high-amperage interrupts.

• Nickel-Plated End Caps: Solid metallic end caps ensure a low-resistance electrical connection and a tight fit inside spring-loaded fuse holder clips.

Benefits

• Protects internal wiring, control boards, and high-voltage transformers from severe electrical short circuits and overload damage.

• Solves dead appliance issues where a tripped fuse prevents the oven or microwave from powering on.

• Direct replacement restores factory-certified safety compliance.

Applications

Designed specifically for select LG oven-range and microwave models requiring part number 3B74133P.

What's Included

• 1 x Genuine LG Oven-Range Time Delay Ceramic Fuse (3B74133P)

Usage Instructions

1. DANGER: Unplug the appliance from the electrical power outlet or turn off power at the main breaker panel before attempting repairs.

2. Remove the cabinet mounting screws and carefully lift off the outer metal cover.

3. Discharge any high-voltage capacitors using an insulated screwdriver across terminal posts to the metal chassis.

4. Locate the main power fuse held inside the spring-loaded fuse block near the power cord entry point.

5. Pry the old blown fuse out of its spring clips using a plastic fuse puller or insulated tool.

6. Snap the new LG 3B74133P ceramic fuse securely into the holder, reassemble the cabinet cover, and restore power.

Safety Instructions

• Disconnect main AC electrical power prior to opening cabinet panels or handling internal components.

• Never replace a time-delay fuse with a fast-acting or higher-amperage fuse, as this creates a severe fire hazard.

Care Instructions

• Keep fuse clips clean and free of corrosion. No ongoing maintenance required once installed.

Technical Specifications