MERSEN FUSE US 271I US271I

Q: What fuse size does the Mersen J226420 accept?

The J226420 is designed for 27 × 60 mm cylindrical fuse-links.

Q: What voltage ratings does this fuse holder support?

The holder is rated for 800 V AC and 800 V DC under both IEC and UL standards.

Q: Is the J226420 finger safe?

Yes. The UltraSafe™ design provides IP20 finger-safe protection, including during fuse replacement.

The UltraSafe™ US271I fuse holder offers reliable circuit protection for demanding industrial applications, accommodating 27×60 mm UL fuses with both 800VAC and 800VDC ratings. Features include a visual indicator, single-pole design, Faston lugs, and IP20 touch-safe protection.

SKU: J226420Alt SKU: US271IMPN: J226420

List Price £87.53 ex VAT

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£87.53

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Manufacturer Lead Time

£87.53

Why Choose the Mersen J226420 UltraSafe™ Fuse Holder?

The Mersen J226420 is a genuine UltraSafe™ US271I modular fuse holder designed for 27 × 60 mm cylindrical fuse-links. Part of the renowned Modulostar® CMS27 / UltraSafe™ US27 range, this single-pole fuse holder combines finger-safe operation, high voltage ratings and dependable performance for demanding industrial electrical installations.

Designed to meet both IEC and UL requirements, the J226420 offers 800 V AC/DC ratings and features an integrated visual blown-fuse indicator for rapid fault identification. The robust thermoplastic construction provides IP20 finger-safe protection, even during fuse replacement, helping improve operator safety and minimise maintenance downtime.

Its Faston lug terminals allow quick installation, while optional auxiliary microswitch accessories enable remote fuse status indication for industrial automation and control systems. The modular design also allows multiple poles to be assembled using compatible linking kits where required.

Key Advantages

Genuine Mersen UltraSafe™ US271I modular fuse holder.
Suitable for 27 × 60 mm cylindrical fuse-links.
800 V AC / 800 V DC IEC and UL rated.
Integrated visual blown-fuse indicator.
IP20 finger-safe protection, including during fuse replacement.
Compatible with optional auxiliary microswitches for remote indication.

Key Features

Manufacturer: Mersen
Series: Modulostar® CMS27 / UltraSafe™ US27
Catalogue number: US271I
Item number: J226420
Single-pole modular fuse holder.
Visual blown-fuse indicator.
Faston lug connections.
DIN rail mounting compatible.
Heavy-duty thermoplastic construction.
Compatible with multipole assembly kits.

Designed for Safe Industrial Fuse Protection

The Mersen J226420 provides a reliable and safe method of mounting 27 × 60 mm fuse-links in industrial electrical systems. Its finger-safe design enhances operator protection, while the visual fuse indicator enables maintenance personnel to quickly identify operated fuses and restore equipment to service more efficiently.

Suitable for OEM equipment, industrial control panels, motor drives, photovoltaic systems and power distribution equipment, the UltraSafe™ range delivers dependable performance in demanding applications where safety and reliability are essential.

Typical Applications

Industrial control panels.
Motor control centres.
Power distribution equipment.
Variable frequency drives.
Renewable energy systems.
OEM electrical machinery.
Industrial automation systems.

Technical Specifications

Phase	Single Phase
Item number	J226420
Catalogue No	US271I
Description	Fuse Holder UltraSafe™ 800VAC 800VDC UL Fuse size 27x60 1-pole Visual Indicator Faston Lugs IP20
EAN/UPC Code	3605340269000
Rated voltage AC UL	800 V
Rated voltage DC UL	800 V
Rated voltage AC IEC	800 V
Rated voltage DC IEC	800 V
Ampere Rating	140 A
RoHS Compliant	Yes
AC or DC	AC/DC
Fuse Size	27x60
Design Details	single pole
Indication System	Yes
Indication System Type	Visual Indicator
Number of Poles	1-pole
Torque Rating	3.5 Nm
Rated Impulse Withstand Voltage	8 kV
Rated Insulation Voltage	800 V
Max Power dissipation of Fuse Links Pn	11 W
Installation Mounting	DIN rail acc. EN 60715
Product Width	39.9 mm
Product Length	93.5 mm
Product Height	149.4 mm
Sell Pack Quantity	3 EA
Sell Pack Weight	0.909 kg
Sell Pack Width	154.9 mm
Sell Pack Length	165.1 mm
Sell Pack Height	100.1 mm
Product group	Fuse Holders
Conventional Free Air thermal Current With Fuse-Links Ith	140 A
Product Weight	0.303 kg
HS Code	85361090
Country of Manufacture	Tunisia
Poles	1-pole
Fuse Size	27x60 mm
Voltage	800 V

Frequently Asked Questions

What fuse size does the Mersen J226420 accept?

The J226420 is designed for 27 × 60 mm cylindrical fuse-links.

Does the J226420 include a blown-fuse indicator?

Yes. The US271I version features an integrated visual indicator that clearly shows when the fuse has operated.

What voltage ratings does this fuse holder support?

The holder is rated for 800 V AC and 800 V DC under both IEC and UL standards.

Can this fuse holder be mounted on a DIN rail?

Yes. The J226420 is designed for convenient DIN rail installation in industrial electrical panels.

Is the J226420 finger safe?

Yes. The UltraSafe™ design provides IP20 finger-safe protection, including during fuse replacement.

Trusted Fuse Mounting Solutions from Mersen

Mersen UltraSafe™ modular fuse holders are trusted by electrical engineers, panel builders and OEM manufacturers worldwide for safe fuse installation, reliable operation and long-term industrial performance.

Phase	Single Phase
Item number	J226420
Catalogue No	US271I
Description	Fuse Holder UltraSafe™ 800VAC 800VDC UL Fuse size 27x60 1-pole Visual Indicator Faston Lugs IP20
EAN/UPC Code	3605340269000
Rated voltage AC UL	800 V
Rated voltage DC UL	800 V
Rated voltage AC IEC	800 V
Rated voltage DC IEC	800 V
Ampere Rating	140 A
RoHS Compliant	Yes
AC or DC	AC/DC
Fuse Size	27x60
Design Details	single pole
Indication System	Yes
Indication System Type	Visual Indicator
Number of Poles	1-pole
Torque Rating	3.5 Nm
Rated Impulse Withstand Voltage	8 kV
Rated Insulation Voltage	800 V
Max Power dissipation of Fuse Links Pn	11 W
Installation Mounting	DIN rail acc. EN 60715
Product Width	39.9 mm
Product Length	93.5 mm
Product Height	149.4 mm
Sell Pack Quantity	3 EA
Sell Pack Weight	0.909 kg
Sell Pack Width	154.9 mm
Sell Pack Length	165.1 mm
Sell Pack Height	100.1 mm
Product group	Fuse Holders
Conventional Free Air thermal Current With Fuse-Links Ith	140 A
Product Weight	0.303 kg
HS Code	85361090
Country of Manufacture	Tunisia
Poles	1-pole
Fuse Size	27x60 mm
Voltage	800 V

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