5x20mm PCB Fuse Block Holder | 10A 250V/500V AC/DC Flame Retardant
5x20mm PCB mount fuse holder with UL94 V0 flame retardant PA66/PBT housing and tin-plated brass contacts, 10A 250V/500V AC/DC, through-hole design for reliable circuit board overcurrent protection, RoHS compliant.
Need a Fuse for Your Project?
Share your requirements with us for product guidance and a quotation.
The PCB fuse block holder for 5x20mm cartridge fuses is a high-quality through-hole fuse base designed for low-voltage electronic circuit protection. This PCB fuse block holder adopts UL94 V0 flame retardant engineering plastic housing with tin-plated brass contacts, delivering stable electrical connection and reliable overcurrent protection for printed circuit boards. Widely used in power supplies, industrial control systems, consumer electronics and communication equipment, it features compact structure, excellent insulation performance and long service life, making it a standard protection component for various PCB-level circuits.
Key Features of 5x20mm PCB Fuse Block Holder
- Compatible with standard 5 x 20mm cartridge fuses, the most widely used small fuse specification in low-voltage electronics
- Rated current: 10A; rated voltage: 250V / 500V AC/DC, covering most low-voltage power supply scenarios
- Housing material: PA66 or PBT, both with UL94 V0 flame retardant grade, high temperature and aging resistance
- Contact hardware: 0.5mm thick H65 brass with tin-plated surface, low contact resistance and excellent conductivity
- Through-hole PCB mounting design, compatible with both wave soldering for mass production and manual soldering for prototyping
- High insulation strength, stable performance under humid and dusty industrial environments
- RoHS compliant, fully meets global electronic product export environmental requirements
This through-hole fuse socket maintains stable contact resistance even under long-term continuous operation, avoiding overheating caused by poor contact. Its flame retardant housing passes strict safety tests, ensuring reliable protection in household appliances, industrial equipment and automotive electronic auxiliary systems.
Main Electrical Specifications
| Item | Parameter |
|---|---|
| Model | PTF-15E |
| Compatible Fuse Size | 5 x 20mm cartridge fuse |
| Rated Voltage | 250V / 500V AC / DC |
| Rated Current | 10A |
| Housing Material | PA66 or PBT, UL94 V0 flame retardant |
| Contact Material | H65 Brass, 0.5mm thickness, tin-plated |
| Mounting Type | Through-hole PCB mount |
| Compliance | RoHS compliant |
Selection & Application Guide
When selecting a PCB fuse block holder, first confirm the fuse size, rated voltage and current required by the circuit. For high-temperature environments above 85℃, PBT housing is recommended for better thermal stability; for scenarios requiring higher mechanical strength, PA66 housing is a more suitable choice. Always match the fuse rating with the actual working current, reserving a 1.25-1.5 times safety margin to avoid premature fuse failure or insufficient protection.
Application Scenarios
- Switching power supplies, AC/DC adapters and charger circuit protection
- Industrial control circuit boards, instrumentation and automation equipment
- Consumer electronics and household appliance control boards
- Communication equipment, network terminals and set-top boxes
- LED lighting drivers and smart home power modules
- Automotive electronic auxiliary systems and on-board chargers
- Small power distribution modules and security power supplies
Installation & Usage Notes
1. Select a matching 5x20mm cartridge fuse with appropriate current rating before installation, and check that the fuse is intact before insertion.
2. Ensure proper soldering quality during through-hole installation to avoid cold solder joints that cause poor contact and overheating.
3. Do not use the holder beyond its rated voltage and current range to avoid insulation breakdown or safety hazards.
4. Disconnect the power supply before replacing the fuse to prevent electric shock or short-circuit damage to the circuit.
5. Store in a dry, dust-free and corrosion-free environment to prevent contact oxidation and insulation performance degradation.
Frequently Asked Questions
Q1: What size of fuse does this PCB fuse block holder fit?
A1: It is compatible with standard 5x20mm cartridge fuses, the most common specification for low-voltage electronic circuit protection.
Q2: What are the rated voltage and current of this fuse holder?
A2: Rated current is 10A; rated voltage supports both 250V and 500V for AC and DC circuits.
Q3: What housing materials are available?
A3: PA66 and PBT options are available, both with UL94 V0 flame retardant grade. You can choose according to operating temperature and mechanical requirements.
Q4: Is this product RoHS compliant?
A4: Yes, this 5x20mm PCB fuse block holder is fully RoHS compliant, suitable for global electronic product export.
Q5: What soldering methods does it support?
A5: It adopts through-hole design, suitable for both automatic wave soldering in mass production and manual soldering for prototype development and maintenance.
