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MERSEN FUSE SI PTF 78 MISIPTF78
Mersen K208228 MISIPTF78 open-type single-pole miniature fuse base for 5 x 20 mm cartridge fuses, rated at 6.3 A and 250 V AC for printed circuit board mounting.
£0.3975
Why Choose the Mersen K208228 MISIPTF78 Miniature Fuse Base?
The Mersen K208228 is a compact and dependable open-type miniature fuse base designed to securely accommodate standard 5 × 20 mm cartridge fuses. Also identified by the catalogue reference MISIPTF78 and designation SI PTF 78, it provides a practical fuse mounting solution for printed circuit boards and enclosed electrical equipment.
Part of the Mersen IEC Miniature Fuse Bases range, the K208228 is rated for operation at up to 250 V AC and 6.3 A. Its open construction provides convenient access to the installed fuse, supporting straightforward inspection, testing and replacement during equipment maintenance.
The fuse base features a compact single-pole PCB-mounted design manufactured from flame-retardant PA6.6 UL94 V-0 insulating material. Its reliable contact arrangement and space-saving dimensions make it suitable for industrial controls, electronic assemblies, instrumentation and OEM equipment.
Key Advantages
- Designed for standard 5 × 20 mm miniature cartridge fuses.
- 250 V AC and 6.3 A ratings suit a wide range of electrical circuits.
- Open design allows convenient fuse inspection and replacement.
- Compact format supports direct printed circuit board mounting.
- Single-pole construction conserves space within electrical equipment.
- UL94 V-0 flame-retardant insulating material.
- Reliable electrical contact for dependable circuit protection assemblies.
Key Features
- Mersen IEC Miniature Fuse Bases, Open Type series.
- MISIPTF78 catalogue reference.
- SI PTF 78 product designation.
- Compatible with 5 × 20 mm miniature fuses.
- 6.3 A rated current.
- 250 V AC rated voltage.
- Single-pole configuration.
- PCB-mounted installation.
- PA6.6 insulating body with UL94 V-0 flammability rating.
- RoHS-compliant construction.
Reliable Fuse Mounting for Printed Circuit Boards
Miniature fuse bases provide a secure connection point between a replaceable cartridge fuse and the protected electrical circuit. When fitted with a correctly selected fuse, the K208228 forms part of an effective protection arrangement against sustained overloads and short circuits.
The open construction is best suited to internal equipment assemblies where access to live parts is restricted by the finished enclosure. Its compact PCB-mounted format makes it suitable for new electronic designs, replacement applications and space-conscious industrial equipment.
Typical Applications
- Printed circuit boards.
- Industrial control equipment.
- Electronic power supplies.
- Instrumentation and monitoring devices.
- Commercial electrical equipment.
- OEM machinery and electronic assemblies.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Poles | 1-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Current | 6.3 A | |
| Voltage | 250 V | |
| Manufacturer | Mersen | |
| Series | IEC Miniature Fuse Bases, Open Type | |
| Model | K208228 | |
| Catalogue number | MISIPTF78 | |
| Designation | SI PTF 78 | |
| Product type | Open-type miniature fuse base | |
| Compatible fuse size | 5 × 20 mm | |
| Rated current | 6.3 A | |
| Rated voltage | 250 V AC | |
| Supply type | AC | |
| Frequency | 50 / 60 Hz | |
| Number of poles | 1 pole | |
| Mounting type | Printed circuit board mounting | |
| Protection rating | IP00 | |
| Body material | PA6.6 | |
| Flammability rating | UL94 V-0 | |
| Product width | approximately 9.4 mm | |
| Product length | approximately 24.4 mm | |
| Product height | approximately 11.4 mm | |
| Approximate product weight | 0.9 g | |
| Pack quantity | 10 | |
| Compliance | RoHS compliant | |
| EAN / UPC | 3605340208757 | |
| HS Code | 85369085 |
Frequently Asked Questions
What is the Mersen K208228 used for?
The Mersen K208228 provides an open mounting base for a replaceable 5 × 20 mm miniature cartridge fuse on a printed circuit board.
What fuse size fits the K208228?
The fuse base is designed to accept standard 5 × 20 mm miniature cartridge fuses.
What are the electrical ratings of the K208228?
The Mersen K208228 has a rated current of 6.3 A and a rated operating voltage of 250 V AC.
How is the K208228 installed?
The fuse base is designed for direct mounting onto a printed circuit board within suitable electrical or electronic equipment.
Does the K208228 protect against contact with live parts?
No. The K208228 has an IP00 open-type design and should be installed inside suitable equipment or an enclosure that provides the required protection against direct contact.
Trusted by Electronic Equipment Manufacturers Worldwide
Mersen miniature fuse bases are widely used by electronic designers, equipment manufacturers and maintenance engineers for secure fuse mounting, consistent electrical performance and straightforward integration into printed circuit board assemblies.
