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MERSEN FUSE 621 CP URGD 27.60 250 621CPURGD27.60/250

MERSEN FUSE 621 CP URGD 27.60 250 621CPURGD27.60/250

Engineered for precision protection in demanding industrial applications, this 250A cylindrical fuse ensures rapid response to short-circuit conditions, maximising system safety and minimising downtime. Fully compliant with IEC standards, it offers superior current-limiting performance at up to 600VAC, making it ideal for safeguarding power semiconductors and sensitive components.

SKU: W076264Alt SKU: FR27UD60V250TMPN: W076264
Price
List Price £83.90 ex VAT
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£83.90
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Why Choose the Mersen W076264 Semiconductor Fuse?

The Mersen W076264, catalogue number FR27UD60V250T, is an ultra-fast Protistor® semiconductor fuse designed to protect sensitive power semiconductor devices against high short-circuit currents. It features an aR utilisation category, a rated current of 250 A and a rated voltage of 600 V AC (IEC), making it ideal for demanding industrial power electronic applications.

Manufactured in a 27 × 60 mm cylindrical format, the W076264 incorporates an integrated striker indicator for rapid fuse-status indication and optional remote signalling. Its low let-through energy and extremely high breaking capacity help minimise damage to valuable semiconductor devices including IGBTs, thyristors, diodes and rectifier modules.

Designed in accordance with IEC 60269-1 and IEC 60269-4, the W076264 is widely used in variable speed drives, UPS systems, industrial converters and power supplies where dependable semiconductor protection is essential.

Key Advantages

  • Genuine Mersen Protistor® semiconductor fuse.
  • 250 A rated current with 600 V AC IEC rating.
  • aR utilisation category for semiconductor short-circuit protection.
  • Integrated striker enables rapid fuse-status indication.
  • Extremely high 200 kA breaking capacity.
  • Low I²t reduces thermal stress on power semiconductors.
  • Compact 27 × 60 mm cylindrical construction.
  • Complies with IEC 60269-1 and IEC 60269-4.

Key Features

  • Mersen W076264 / FR27UD60V250T.
  • Protistor® ultra-fast semiconductor fuse.
  • 250 A rated current.
  • 600 V AC IEC rated voltage.
  • aR utilisation category.
  • Integrated mechanical striker indicator.
  • 27 × 60 mm cylindrical ceramic body.
  • Silver-plated copper ferrule terminals.
  • Clip mounting.
  • Suitable for industrial semiconductor protection.

Engineered for High-Power Semiconductor Protection

The Mersen W076264 has been developed to provide dependable protection for high-power semiconductor equipment where extremely rapid fault clearance is critical. Its aR operating characteristics limit fault energy during short-circuit conditions, helping protect expensive power electronic devices and reduce equipment downtime.

The integrated striker enables quick visual identification of an operated fuse and can be used with compatible auxiliary signalling devices to simplify maintenance in industrial installations.

Typical Applications

  • Variable speed drives.
  • Industrial inverters and converters.
  • Rectifier equipment.
  • UPS systems.
  • Motor control centres.
  • Power semiconductor protection.

Technical Specifications

Item number W076264
Catalogue No FR27UD60V250T
Description High-Speed Cylindrical Fuse Protistor® Size 27x60 aR 600VAC IEC 250A With Striker
EAN/UPC Code 3605340016017
Rated voltage AC IEC 600 V
Ampere Rating 250 A
RoHS Compliant Yes
AC or DC AC
Speed/Characteristic aR
Fuse Size 27x60
Mounting Clip
Clearing I2t At Rated Voltage 107 kA²s
Melting I2t 29.6 kA²s
AC Max I.R./Breaking Capacity I1: 200 kA
Design Details URGD
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Silver-Plated Copper
Connection/Terminal Type Ferrule
Product Diameter 27 mm
Product Length 60.3 mm
Sell Pack Quantity 10 EA
Sell Pack Weight 0.8 kg
Sell Pack Width 123 mm
Sell Pack Length 138 mm
Sell Pack Height 30 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.08 kg
Power Dissipation at Rated Current Value 40 W
HS Code 85361090
Country of Manufacture France
Fuse Type Semiconductor
Fuse Size 27x60 mm
Fuse Class aR
Voltage 600 V

Frequently Asked Questions

What is the Mersen W076264 used for?

The W076264 is an ultra-fast semiconductor fuse designed to protect power electronic devices against damaging short-circuit currents.

What is the current rating of the W076264?

The fuse has a rated current of 250 A.

What voltage is the W076264 rated for?

The fuse is rated for applications operating at up to 600 V AC (IEC).

What does the aR classification mean?

The aR utilisation category identifies a semiconductor fuse designed specifically for short-circuit protection. Separate overload protection should be provided where required.

Does the W076264 include a fuse indicator?

Yes. The fuse incorporates an integrated mechanical striker that provides local indication and can operate compatible remote signalling accessories.

Trusted Semiconductor Protection from Mersen

Mersen Protistor® semiconductor fuses are trusted by electrical engineers, OEMs and panel builders worldwide for protecting industrial power electronic equipment operating in demanding environments.

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