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5×20 Fuse Holder Complete Guide: Specifications, Mounting & Selection
What Is a 5×20 Fuse Holder?
A 5×20 fuse holder is a miniature circuit protection component that secures and connects 5×20mm cartridge fuses in electronic circuits. It provides mechanical retention, electrical insulation and easy fuse replacement for maintenance teams.
As the most widely used small-format fuse mount, it fits perfectly into space-constrained PCB designs and compact industrial and consumer electronic devices.
Key Specifications & Electrical Parameters
Specifically, these are the core technical parameters for standard 5×20 cartridge fuse holders:
Tensão nominal: 250V AC standard, up to 125V DC for low-voltage circuits
Faixa de corrente nominal: 1A to 10A, matched with standard 5×20 glass/ceramic fuses
Material de construção: Flame-retardant PA66 or PBT, UL94-V0 rated
Material de contato: Tin-plated brass or nickel-plated copper, low contact resistance
Certificações: UL, TuV,CE, CQC, RoHS, REACH compliant
Temperatura de operação: -40°C to +105°C for industrial-grade models
Main Types by Mounting Method
We classify 5×20 fuse holders into four standard types based on installation method, each for different assembly scenarios:
PCB Through-Hole Type – Straight or right-angle pins for wave soldering; ideal for automated PCB assembly.
Panel Mount Type – Threaded or snap-in design for enclosure mounting; enables fuse replacement without disassembly.
Leaded Type – Pre-attached wire leads for in-line cable connection; common in power cords and standalone modules.
SMD Surface Mount Type – Ultra-compact footprint for high-density PCB layouts; compatible with SMT processes.
Step-by-Step Selection Guide
Follow this engineering workflow to select the correct 5×20 fuse holder for your project:
First, define circuit parameters: maximum voltage, operating current and inrush current characteristics.
Next, determine mounting type: select PCB, panel or leaded based on assembly structure and serviceability.
Then, verify material and certifications: match housing to operating temperature and target market standards.
After that, confirm fuse compatibility: ensure the holder accepts standard 5x20mm fuses with the correct rating.
Finally, evaluate environmental conditions: account for vibration, humidity and dust in industrial applications.
Cenários típicos de aplicação
5×20 fuse holders serve a wide range of industries thanks to their compact size and reliable performance. For example, you will find them in these common applications:
Consumer electronics: power adapters, chargers, small household appliances
Industrial control: PLC modules, sensor circuits, control panels
Power supplies: AC/DC converters, switching power supplies, UPS systems
Lighting systems: LED drivers, commercial lighting fixtures
Automotive electronics: low-voltage auxiliary circuits
EssFuse 5×20 Fuse Holder Product Range
EssFuse manufactures a full range of 5×20 cartridge fuse holders for industrial and commercial applications. Our product line includes through-hole, panel mount and leaded configurations to cover most use cases.
All models feature high flame-retardant housings, high-conductivity contacts and full global certifications. They deliver consistent performance even in demanding operating environments.
Perguntas frequentes
Q: Can I use a 6×30 fuse in a 5×20 fuse holder?
A: No, you cannot use a 6×30 fuse in a 5×20 fuse holder. The two sizes have different internal dimensions and are not interchangeable. Using the wrong size will cause poor contact, overheating and failed overcurrent protection.
Q: What is the maximum current for a 5×20 fuse holder?
A: A standard 5×20 fuse holder has a maximum current rating of 10A at 250V AC. Always match the holder’s current rating to the fuse and circuit operating current to ensure safe and reliable protection.
Q: Are 5×20 fuse holders RoHS compliant?
A: Yes, all EssFuse 5×20 fuse holders are RoHS and REACH compliant. We manufacture them with lead-free materials, and they meet EU environmental standards for global export and industrial applications.
Q: What is a 5×20 fuse holder used for?
A: You use a 5×20 fuse holder to hold and connect 5x20mm cartridge fuses in electronic circuits. It provides overcurrent protection for consumer electronics, industrial control boards, power supplies and compact lighting systems.
Q: What material are 5×20 fuse holders made of?
A: Standard 5×20 fuse holders use flame-retardant PA66 or PBT for the housing, and tin-plated brass or nickel-plated copper for the contacts. Industrial-grade models offer higher temperature resistance and UL94-V0 flame rating.
PCB Fuse Holder Clip | SMD & Through Hole Fuse Clips
Panel Fuse Holder | Panel Mount Fuse Bases
