Fuse 5x20 mm 5A 250V, Lamex LX3029 5A

The Lamex LX3029 cylindrical glass fuse measures 5 x 20 mm and is rated at 5 A, 250 V. It is a standard cartridge-style fuse designed to interrupt overcurrent in low-power circuits. Its clear glass body allows visual inspection of the fuse element, and the metal end caps provide stable contact in compatible fuse holders and panel mounts. The fuse is intended for common small appliances, electronic devices, printed circuit boards and control panels that accept 5x20 mm cartridge fuses.

Advantages

This 5x20 mm 5 A fuse offers predictable overcurrent protection and easy visual verification of continuity thanks to its transparent glass tube. Its standard dimensions and end-cap design make it compatible with a wide range of fuse clips, PCB holders and panel-mounted fuse holders. The simple construction provides reliable operation in ordinary ambient conditions, and the glass body facilitates quick diagnosis of blown fuses during maintenance.

Suitable for

• Protection of small household appliances and consumer electronics
• Circuit protection on printed circuit boards with 5x20 mm fuse holders
• Panel-mounted fuse applications in control cabinets and instruments
• Replacement of standard cartridge fuses in power supplies and chargers

When it may not be suitable

This fuse is a basic time-delay characteristic is not specified; it should not be assumed suitable where specific fast-blow or slow-blow behavior is required. It is classified for low-power, low-energy circuits; it is not intended for high inrush current devices, heavy industrial loads, or systems requiring high breaking capacity. For environments with strong vibration, shock, moisture or explosive atmospheres, specialized fuses or protective devices should be considered.

Key specifications

• Physical size: 5 x 20 mm cylindrical glass cartridge
• Rated current: 5 A
• Rated voltage: 250 V
• Construction: transparent glass body with metal end caps
• Mounting: compatible with 5x20 mm fuse clips, PCB holders and panel holders

How to use

Install the fuse in a compatible 5x20 mm fuse holder, ensuring the power is switched off before servicing. Verify the holder and end connections are clean and provide firm contact with the metal caps. After a fault, visually inspect the glass tube for a melted or open element; replace only with an identical 5 A, 250 V 5x20 mm cartridge fuse. Do not attempt to repair a blown fuse or bypass it, and always restore protective covers and correct polarity if applicable before re-energizing the circuit.

What to consider before purchase

• Confirm the required rated current and voltage (5 A, 250 V) for your circuit
• Ensure physical compatibility with existing 5x20 mm fuse holders or panel cutouts
• Check whether a fast-blow or slow-blow characteristic is required for your application
• Assess whether the circuit demands higher breaking capacity or specialized environmental protection

Usage recommendations

Use this Lamex 5x20 mm 5 A fuse as a direct replacement for standard cartridge fuses in appliances and electronics with matching ratings. Maintain an inventory of spare fuses and verify holder contact integrity during routine maintenance to ensure reliable overcurrent protection.