Mersen P204943 MISIPTF15 single-pole open-type PCB fuse holder for 5 x 20 mm miniature fuse links, rated at 6.3 A and 250 V AC.
£0.65
The Mersen P204943, catalogue reference MISIPTF15, is a compact open-type printed circuit board fuse holder designed for standard 5 x 20 mm miniature fuse links. It provides a straightforward and reliable method of incorporating replaceable overcurrent protection into electronic equipment, control assemblies and OEM electrical products.
Part of the Mersen IEC miniature fuse base range, the P204943 features a simple open construction that provides easy access to the installed fuse. Its PCB-mounted format supports space-efficient integration into electronic assemblies, while the flame-resistant insulating body helps provide dependable performance in professionally enclosed equipment.
With a rated current of 6.3 A and a rated operational voltage of 250 V AC, this single-pole fuse holder is suitable for low-voltage circuits operating at 50 or 60 Hz. The P204943 should be installed inside suitable equipment or an enclosure because its open design carries an IP00 protection rating.
The Mersen P204943 provides a secure mounting point for a replaceable 5 x 20 mm fuse link within a printed circuit board assembly. When the installed fuse operates because of an overload or short circuit, its open construction allows convenient inspection and replacement during equipment servicing.
Because the holder has an IP00 rating and does not provide protection against direct contact, it is intended for installation inside enclosed electrical or electronic equipment. Its compact dimensions make it particularly suitable for applications where PCB space is limited but accessible fuse protection is required.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | IEC Miniature Fuse Bases - Open Type |
| Model | P204943 |
| Catalogue reference | MISIPTF15 |
| Description | SI PTF 15/10 miniature fuse base and holder |
| Product type | Open-type miniature fuse holder |
| Number of poles | 1 pole |
| Compatible fuse size | 5 x 20 mm |
| Rated current | 6.3 A |
| Rated operational voltage | 250 V AC |
| Frequency | 50 / 60 Hz |
| Current type | AC |
| Mounting type | Printed circuit board mounting |
| Protection rating | IP00 |
| Maximum contact resistance | 5 to 10 mΩ |
| Insulating material rating | UL94 V-0 |
| Product width | 9 mm |
| Product length | 22 mm |
| Product height | 13.5 mm |
| Applicable standard | IEC 60127-6 |
| RoHS compliant | Yes |
| GTIN / EAN | 3605340184242 |
| Typical product weight | Approx. 2 g |
The Mersen P204943 is used to mount a replaceable 5 x 20 mm fuse link on a printed circuit board, providing overcurrent protection for electronic and low-voltage electrical equipment.
The holder is designed for standard cylindrical 5 x 20 mm miniature fuse links.
The P204943 is rated for a current of up to 6.3 A and an operational voltage of 250 V AC.
It is designed for direct printed circuit board mounting within suitable electrical or electronic equipment.
No. The holder has an IP00 protection rating and should therefore be installed inside a suitable enclosure where direct contact with live parts is prevented.
Mersen miniature fuse holders are trusted by electronics designers, control engineers and OEM manufacturers for reliable fuse retention, compact PCB integration and dependable performance in protected equipment assemblies.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...