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MERSEN FUSE 8 URD 71 TT F 0900 N301289

MERSEN FUSE 8 URD 71 TT F 0900 N301289

High-speed Protistor® fuse designed for semiconductor protection up to 900A, with ceramic square body, flush ends with metric threads, and striker indication system. Complies with IEC and UL standards.

SKU: N301289Alt SKU: PC71UD80V900TFMPN: N301289
Price
List Price £241.32 ex VAT
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£241.32
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Why Choose the Mersen N301289 Industrial Fuse-Link?

The Mersen N301289 is an industrial fuse-link designed to provide dependable electrical circuit protection in compatible power-control, automation and industrial equipment applications. Manufactured by Mersen, a recognised specialist in electrical protection, this fuse helps safeguard valuable components and connected equipment against potentially damaging overcurrent and short-circuit conditions.

Industrial fuse-links interrupt excessive fault current before it can cause extensive damage to cables, control components or machinery. The Mersen N301289 is suitable for maintenance, replacement and OEM requirements where dependable operation and correctly coordinated circuit protection are essential.

Before installation, the fuse’s rated current, rated voltage, utilisation category, breaking capacity, physical dimensions and terminal configuration should be verified from the product markings or official Mersen technical documentation. Correct specification matching is essential because physically similar fuse-links may provide different electrical operating characteristics.

Key Advantages

  • Dependable industrial overcurrent and short-circuit protection.
  • Manufactured by the established Mersen electrical protection brand.
  • Helps protect cables, components and connected industrial equipment.
  • Suitable for maintenance, replacement and OEM applications.
  • Designed for use in compatible fuse holders and equipment assemblies.
  • Supports improved equipment reliability and reduced unplanned downtime.

Key Features

  • Mersen industrial fuse-link.
  • Item number: N301289.
  • Designed for electrical circuit and equipment protection.
  • Industrial-grade construction for dependable operation.
  • Suitable for compatible power-control and automation systems.
  • Helps isolate potentially damaging electrical fault currents.
  • Suitable for planned maintenance and replacement programmes.
  • Genuine Mersen electrical protection component.

Reliable Protection for Industrial Electrical Equipment

Industrial fuse-links protect electrical systems by opening the circuit when current exceeds their specified operating limits. A correctly selected fuse can restrict fault energy, protect downstream components and reduce the risk of extensive damage to machinery, control panels and power-distribution equipment.

When replacing the Mersen N301289, engineers should verify the complete product reference together with the current rating, voltage rating, utilisation category, breaking capacity, dimensions and terminal arrangement. Replacement based solely on physical appearance is not recommended because visually similar fuse-links may offer significantly different protection characteristics.

Typical Applications

  • Industrial control panels and electrical cabinets.
  • Power distribution and switchgear assemblies.
  • Motor-control and power-conversion equipment.
  • Manufacturing and processing machinery.
  • Industrial automation systems.
  • OEM equipment and electrical maintenance programmes.

Technical Specifications

Item number N301289
Catalogue No PC71UD80V900TF
Description Square Body High-Speed Fuse Protistor® Size 71 aR 800VAC IEC 850VAC UL 900A With Striker Flush ends metric threads
EAN/UPC Code 3605340339284
Rated voltage AC UL 850 V
Rated voltage AC IEC 800 V
Ampere Rating 900 A
AC or DC AC
Speed/Characteristic aR
Fuse Size 71
Mounting Bolted
Clearing I2t At Rated Voltage 2010 kA²s
Melting I2t 446 kA²s
AC Max I.R./Breaking Capacity I1: 150 kA
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Silver-Plated Brass
Connection/Terminal Type Flush ends
Product Width 51 mm
Product Length 74 mm
Product Height 56.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 1.545 kg
Sell Pack Width 90 mm
Sell Pack Length 170 mm
Sell Pack Height 70 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.515 kg
Power Dissipation at Rated Current Value 100 W
HS Code 85361090
Fuse Type Semiconductor
Fuse Class aR
Voltage 800 V

Frequently Asked Questions

What is the Mersen N301289 used for?

The Mersen N301289 is used to provide overcurrent and short-circuit protection within compatible industrial electrical equipment, control systems and power assemblies.

How can I confirm the electrical rating of the N301289?

Check the rated current, rated voltage, utilisation category and breaking capacity printed on the fuse-link or listed in the official Mersen technical documentation.

Can the N301289 be replaced with a different fuse?

A substitute should only be installed when its current rating, voltage rating, utilisation category, breaking capacity, dimensions and terminal arrangement match the original specification.

Where is the Mersen N301289 typically installed?

It may be installed in a compatible fuse holder, control panel, switchgear assembly or industrial equipment enclosure, subject to the equipment manufacturer’s requirements.

Who should install or replace this fuse?

The fuse should be installed by a suitably qualified electrical professional after the equipment has been safely isolated and all required specifications have been verified.

Trusted Electrical Protection from Mersen

Mersen electrical protection products are used by industrial engineers, equipment manufacturers and maintenance professionals to support reliable operation across power distribution, machinery and automation applications.

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