MERSEN FUSE A 070 URD 31 TTI 0250 A070URD31TTI0250

MERSEN FUSE A 070 URD 31 TTI 0250 A070URD31TTI0250

High-speed Protistor® fuse with aR characteristic, 250A rating, 690VAC IEC and 700VAC UL voltage ratings, integrated striker indication, flush ends with UNC threads, ceramic body for semiconductor protection.

SKU: B300473Alt SKU: A070UD31TTI250MPN: B300473
Price
List Price £113.58 ex VAT
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£113.58
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Sold in packs of 3

£113.58

Why Choose the Mersen B300473 Industrial Electrical Component?

The Mersen B300473 is an industrial electrical replacement component identified by its manufacturer reference for use in compatible protection, control and power distribution equipment. It is suitable for maintenance, repair and replacement projects where precise component identification is required to preserve the original equipment configuration.

Selecting the correct Mersen manufacturer reference helps engineers, panel builders and maintenance professionals maintain electrical and mechanical compatibility with existing equipment. Accurate part selection can reduce the risk of unsuitable substitutions, installation difficulties, unreliable operation and avoidable machinery downtime.

Before ordering or installing the Mersen B300473, the complete markings on the original component should be compared with the relevant equipment documentation. The electrical ratings, operating characteristics, physical dimensions, terminal arrangement and mounting configuration must all be confirmed for the intended application.

Key Advantages

  • Genuine Mersen industrial electrical component.
  • Clearly identified by the B300473 manufacturer reference.
  • Suitable for maintenance, repair and replacement requirements.
  • Helps preserve compatibility with existing industrial equipment.
  • Supports accurate component identification and procurement.
  • Manufactured for professional industrial electrical applications.

Key Features

  • Mersen manufacturer reference B300473.
  • Industrial-grade electrical replacement component.
  • Suitable for compatible electrical protection and power equipment.
  • Intended for professional maintenance applications.
  • Supports original equipment replacement programmes.
  • Suitable for machinery, panel-building and electrical repair projects.
  • Electrical specifications should be verified before installation.
  • Mechanical compatibility should be checked against the original component.

Accurate Replacement for Industrial Electrical Equipment

Industrial electrical systems depend on correctly specified components to maintain dependable operation. Matching the Mersen B300473 reference to the original product helps reduce the likelihood of installation errors, unsuitable substitutions and unreliable equipment performance.

The complete product markings should always be inspected before installation. Alongside the B300473 reference, engineers should verify the component’s current and voltage ratings, operating class, physical dimensions, terminal configuration and mounting arrangement.

Typical Applications

  • Industrial machinery maintenance and repair.
  • Electrical control panels and switchgear.
  • Automation and process control equipment.
  • Power distribution and conversion systems.
  • Original equipment replacement programmes.
  • Industrial maintenance, repair and overhaul operations.

Technical Specifications

Item number B300473
Catalogue No A070UD31TTI250
Description Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 250A With Striker Flush ends UNC threads
EAN/UPC Code 3605340329025
Rated voltage AC UL 700 V
Rated voltage AC IEC 690 V
Ampere Rating 250 A
RoHS Compliant Yes
AC or DC AC
Speed/Characteristic aR
Fuse Size 31
Mounting Bolted
Clearing I2t At Rated Voltage 28000 A²s
Melting I2t 4700 A²s
AC Max I.R./Breaking Capacity I1: 200 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 50.6 mm
Product Height 56.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 1.155 kg
Sell Pack Width 85 mm
Sell Pack Length 168 mm
Sell Pack Height 65 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.385 kg
Power Dissipation at Rated Current Value 52 W
HS Code 85361090
Country of Manufacture France
Fuse Type Semiconductor
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen B300473?

The Mersen B300473 is an industrial electrical component identified by its manufacturer reference for use in compatible maintenance, repair and replacement applications.

Can the B300473 be used as a direct replacement?

It may be suitable as a replacement when its complete reference, electrical ratings, dimensions, terminals and mounting arrangement match the original component.

Which specifications should be checked before installation?

The rated current, rated voltage, operating characteristic, physical dimensions, terminal arrangement and mounting configuration should all be verified before installation.

Where might the Mersen B300473 be installed?

It may be installed in compatible industrial machinery, control panels, automation equipment and power systems, subject to the original equipment specification.

How can the correct Mersen component be identified?

Check the complete B300473 reference and all other markings on the original component against the equipment manual or official Mersen documentation.

Trusted Industrial Electrical Components

Mersen components are selected by engineers, panel builders and maintenance professionals for use across industrial electrical and power management systems.

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At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

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