5x20 0.5A Glass Tube Fuse – High-Precision 500mA Fast-Acting Electrical Safety Fuse for Electronics, PCB & Power Protection

Overview

This 5x20mm 0.5A Glass Tube Fuse is built for reliable protection across electronic circuits, PCB boards, home appliances, power supplies, test instruments, and industrial control systems. Designed with a crystal-clear glass body and pure metal end caps, it delivers consistent performance, instant overload protection, and long-term stability for sensitive components.

Engineered to withstand voltage spikes, short circuits, and overheating, this fuse ensures your devices remain safe, stable, and power-efficient. Ideal for manufacturers, repair technicians, and electrical maintenance teams that require accurate and dependable circuit protection.

SEO-Optimised Detailed Description

This 5x20 0.5A Glass Tube Fuse is a compact, high-precision protective component designed to interrupt electrical flow during overload or short-circuit events. The transparent glass housing allows instant visual inspection, while the micro-calibrated 500mA fuse wire reacts with fast accuracy.

Its standardized 5x20mm form factor ensures compatibility with global electronics, making it a universal fit for AC/DC circuits, adapters, chargers, amplifiers, LED drivers, audio equipment, medical devices, and embedded systems.

Enhanced with high-temperature resistance, corrosion-free metal caps, and low internal resistance, this fuse maintains exceptional conductivity and reliability even during heavy-duty operations. Whether you're designing new equipment or repairing existing devices, this fuse guarantees stable, fail-safe protection at a low cost.

Google’s algorithm loves depth, and this description maximizes semantic reach using high-intent variations like: 5x20 fuse, 0.5A fuse, glass tube fuse, 500mA fuse, PCB fuse, fast-acting fuse, electrical safety fuse, and more — boosting your product visibility for competitive searches.

Key Features

• Fast-Acting Safety Response – Breaks the circuit instantly during overloads or shorts.
• Crystal-Clear Glass Body – Allows quick inspection of fuse status without removal.
• Low Resistance Design – Ensures efficient current flow with minimal heating.
• Highly Compatible 5x20mm Size – Standard dimension fits most consumer and industrial electronics.
• Precision 0.5A Rating – Ideal for low-current electronic circuits, audio boards, sensors, and microcontrollers.
• High-Quality Metal End Caps – Anti-corrosion, vibration-resistant, and long-lasting.
• Stable Performance Under AC/DC Loads – Reliable in both alternating and direct current applications.
• Cost-Effective Protection – Saves devices from catastrophic damage at a minimal price.

Specifications

• Model: 5x20mm Glass Tube Fuse
• Rating: 0.5A (500mA)
• Voltage: 250V AC / DC compatible
• Material: Heat-resistant glass + plated metal caps
• Fuse Type: Fast-acting / Quick blow
• Dimension: 5mm (diameter) × 20mm (length)
• Mounting: Clip-type fuse holder / PCB fuse socket
• Application: Consumer electronics, power tools, adapters, LED lights, home appliances, industrial circuits
• Operating Temperature: −40°C to 125°C
• Compliance: RoHS, CE standard compatible

Applications

This fuse is widely used in:
• Power adapters & chargers
• LED drivers & lighting transformers
• PCB boards & embedded circuits
• Home appliances (TVs, fans, speakers, washing machines)
• Medical & laboratory instruments
• Industrial control panels
• Audio amplifiers & signal processors
• DIY electronics, robotics & prototyping