5x20mm PCB‑Mount Fuse Holder | 10A With Transparent PC Protective Cover
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PCB‑mount fuse holder for 5x20mm cartridge fuses is a through‑hole soldered circuit‑protection component equipped with transparent PC protective cover for consumer‑electronic and industrial PCBA. This fuse block adopts black PBT base and removable transparent PC protective cover, both UL94 V0 flame‑retardant grade. The transparent cover allows visual inspection of fuse status without disassembling PCBA. Equipped with 0.4 mm phosphor‑bronze spring terminals, it delivers 50A breaking‑capacity, low contact‑resistance and high‑insulation performance. It has passed TUV, CE, CQC, UL safety certifications. Designed for through‑hole wave‑soldering mass‑production. Widely deployed in power adapters, household appliances, test instruments and export‑targeted electronic control boards.
Core Product Features
- Compatible with standard 5 × 20 mm glass / ceramic tubular cartridge fuses for low‑voltage PCB‑level over‑current‑protection
- Electrical rating:10A, 250V /125V AC/DC; rated power acceptance 1.6W; 50A breaking‑capacity for reliable fault‑current interruption
- Base material: Black PBT; Removable protective cover: Transparent PC, both UL94 V‑0 flame‑retardant grade
- 0.4 mm thickness phosphor‑bronze spring terminals, good spring tension and stable clamping‑force
- Contact resistance below 5 mΩ; insulation resistance greater than 100 MΩ; 3000V AC power‑frequency withstand voltage
- Transparent PC cover enables direct visual check of fuse condition without removing components from PCB
- Full‑safety‑certification: TUV, CE, CQC, UL, supports global export market‑access for electronic‑products
- Through‑hole PCB soldering mount, fits conventional wave‑soldering manufacturing workflows
- RoHS‑compliant construction, meets global consumer‑electronics environmental‑protection requirements.
Distinguished from ordinary uncovered PCB fuse clips, this variant adds a detachable transparent PC protective cover. Users can observe fuse blowing status visually without taking apart equipment. Black PBT base plus transparent cover combination is well‑suited for export‑oriented consumer‑electronic PCBA projects requiring visual inspection function.
Full Technical Specifications
| Specification Item | Parameter Value |
|---|---|
| Model | PTF(15) |
| Compatible Fuse | 5 × 20 mm glass / ceramic tubular cartridge fuse |
| Rated Current | 10A |
| Rated Voltage | 250V / 125V AC / DC |
| Rated Power Acceptance | 1.6 W |
| Breaking Capacity | 50A |
| Base / Protective Cover Material | Black PBT base, Transparent PC cover, UL94 V0 flame‑retardant |
| Terminal Material | 0.4 mm thick phosphor bronze |
| Contact Resistance | ＜ 5 mΩ |
| Insulation Resistance | ＞ 100 MΩ |
| Power Frequency Withstand Voltage | 3000V AC |
| Certifications | TUV, CE, CQC, UL |
| Mounting Method | Through‑hole PCB soldering mount |
Note: Original datasheet does not provide operating‑temperature parameter.
Selection & Application Guidance
When selecting this PCB‑mount fuse holder with transparent protective cover for 5×20 mm fuses, confirm fuse dimension, system AC‑DC voltage and continuous operating‑current first. Select matching‑rating 5x20mm tubular fuses and reserve a 1.25‑1.5× safety margin to avoid over‑heating under continuous‑load. The detachable transparent PC cover supports direct visual inspection of fuse status, suitable for equipment requiring quick fuse‑blow diagnosis. For export‑targeted electronic products, verify TUV / CE / CQC / UL certification meets market‑access requirements. Follow official dimension drawing for PCB pad layout to guarantee soldering reliability and stable contact performance.
Typical Application Scenarios
- Export‑grade power‑adapter and small switching‑power‑supply PCBA fuse accessories
- Household‑appliance control‑board and consumer‑electronics protection circuits
- Test instruments, multimeters and laboratory small‑power circuit‑boards
- Communication‑equipment auxiliary power‑input protection accessories
- LED power‑drivers and low‑voltage lighting‑control PCBA
- Small‑industrial‑automation module PCB over‑current‑protection accessories
Installation & Maintenance Instructions
1. Select correct‑rating 5 × 20 mm glass / ceramic tubular cartridge fuse according to circuit‑protection requirements.
2. Design PCB through‑hole pads strictly follow official dimension drawing to ensure soldering compatibility.
3. Complete wave‑soldering or manual‑soldering with proper temperature and dwell‑time; avoid over‑heat damage to PBT and PC plastic components.
4. Insert tubular fuse fully into holder cavity, then fasten transparent PC protective cover for protection.
5. Do not operate beyond published rated voltage‑current limits to prevent insulation breakdown and safety hazards.
6. Cut‑off full power supply and discharge circuit before fuse replacement; remove transparent cover to take out defective fuse, prevent electric‑shock hazard.
7. Periodically inspect for loose fuse, contact‑clip oxidation or heating signs; replace accessories promptly when anomalies are found.
Frequently Asked Questions
Q1: What fuse size fits this pcb fuse holder with transparent cover?
A1: It fits standard 5 × 20 mm glass and ceramic tubular cartridge fuses, with removable transparent PC protective‑cover for visual fuse‑status checking.
Q2: What are main electrical‑specifications?
A2: Rated 10A, 250V/125V AC/DC, 1.6W rated power acceptance, 50A breaking‑capacity; contact resistance＜5 mΩ, insulation resistance＞100 MΩ, 3000V AC withstand‑voltage.
Q3: What is material composition of base and protective‑cover?
A3: Black PBT base and detachable transparent PC protective‑cover, both UL94 V‑0 flame‑retardant grade; terminals are 0.4 mm phosphor‑bronze spring contacts.
Q4: What is special advantage of transparent PC cover?
A4: Transparent protective‑cover allows visual inspection of fuse blow‑out condition, no need to disassemble PCBA for fault diagnosis; cover can be detached for fuse‑replacement.
Q5: What safety certifications does this fuse holder obtain?
A5: Passed TUV, CE, CQC, UL certifications for global export‑electronic‑product market‑access.
Q6: Mounting style and typical‑applications?
A6: Through‑hole PCB soldering mount; widely used for export‑grade power adapters, household appliances, test instruments and consumer‑electronic PCB protection circuits.
