MERSEN FUSE A 070 URD 33 KI 0900 A070URD33KI0900

MERSEN FUSE A 070 URD 33 KI 0900 A070URD33KI0900

Ultra-fast acting fuse designed for semiconductor protection with a 900A rating, suitable for 690VAC IEC and 700VAC UL applications. Features striker indication and slotted blade terminals.

SKU: B300243Alt SKU: A070UD33KI900MPN: B300243
Price
List Price £246.53 ex VAT
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£246.53
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Manufacturer Lead Time

Sold in packs of 3

£246.53

Why Choose the Mersen B300243 Industrial Electrical Component?

The Mersen B300243 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 accurate component identification is essential for preserving the original equipment configuration.

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

Before ordering or installing the Mersen B300243, the complete markings on the original component should be compared with the relevant equipment documentation. The electrical ratings, operating characteristics, 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 B300243 manufacturer reference.
  • Suitable for maintenance, repair and replacement requirements.
  • Helps preserve compatibility with existing industrial equipment.
  • Supports accurate component identification and procurement.
  • Manufactured by an established electrical protection specialist.

Key Features

  • Mersen manufacturer reference B300243.
  • 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 B300243 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 B300243 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 B300243
Catalogue No A070UD33KI900
Description Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 900A With Striker Slotted Blades short
EAN/UPC Code 3605340325591
Rated voltage AC UL 700 V
Rated voltage AC IEC 690 V
Ampere Rating 900 A
RoHS Compliant Yes
AC or DC AC
Speed/Characteristic aR
Fuse Size 33
Mounting Bolted
Clearing I2t At Rated Voltage 770 kA²s
Melting I2t 130 kA²s
AC Max I.R./Breaking Capacity I1: 200 kA
Design Details Standard Terminal
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Silver-Plated Copper
Connection/Terminal Type Slotted Blades
Product Width 73 mm
Product Length 134 mm
Product Height 78.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 2.5353 kg
Sell Pack Width 145 mm
Sell Pack Length 245 mm
Sell Pack Height 90 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.8451 kg
Power Dissipation at Rated Current Value 135 W
HS Code 85361090
Fuse Type Semiconductor
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen B300243?

The Mersen B300243 is an industrial electrical component identified by its manufacturer reference for use in compatible maintenance, repair and replacement applications.

Can the B300243 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 B300243 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 B300243 reference and all other markings on the original component against the equipment manual or official Mersen documentation.

Trusted Industrial Electrical Components

Mersen components are used by engineers, panel builders and maintenance professionals to support dependable operation 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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