MERSEN FUSE 6,9 URB 000 D08 / 250 6,9URB000D08/250

MERSEN FUSE 6,9 URB 000 D08 / 250 6,9URB000D08/250

High-speed aR characteristic fuse rated 250A at 690VAC with ceramic square body and DIN 80 blade terminals for industrial and semiconductor protection.

SKU: Q330041Alt SKU: DN000UB69V250MPN: Q330041
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List Price £63.51 ex VAT
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Why Choose the Mersen Q330041 High-Speed Semiconductor Fuse?

The Mersen Q330041 is a high-performance Protistor® square body high-speed semiconductor fuse designed to provide fast and reliable protection for power semiconductor devices in demanding industrial applications. Manufactured by Mersen, this fuse is engineered to protect diodes, thyristors, IGBTs and other sensitive power electronic components against short circuits and overcurrent conditions.

As part of the renowned Mersen Protistor® size 000/00 aR series, the Q330041 combines ultra-fast operation with high breaking capacity to minimise damage to expensive semiconductor equipment. Its silver-plated contacts, solidified sand construction and low I²t characteristics help maximise system reliability while reducing downtime in power conversion equipment.

With a 250 A current rating and a 690 V AC IEC voltage rating, the Q330041 is ideally suited for use in variable speed drives, UPS systems, inverters, converters and industrial automation equipment where dependable semiconductor protection is essential.

Key Advantages

  • Ultra-fast aR semiconductor fuse for superior device protection.
  • 250 A current rating for demanding industrial applications.
  • 690 V AC IEC rated voltage for power conversion equipment.
  • High 200 kA breaking capacity for exceptional fault protection.
  • Low I²t design helps minimise damage to semiconductor devices.
  • Silver-plated blade contacts provide reliable electrical performance.

Key Features

  • Mersen Protistor® high-speed fuse series.
  • 250 A rated current.
  • 690 V AC IEC / UL rated voltage.
  • 500 V DC UL rated voltage.
  • aR ultra-fast operating characteristic for semiconductor protection.
  • Square body Size NH 000 design.
  • DIN 80 blade terminals.
  • High interrupting rating of 200 kA.

Reliable Protection for Power Electronics

High-speed semiconductor fuses are specifically designed to interrupt fault currents before sensitive semiconductor devices can be damaged. Their extremely low I²t performance allows them to clear faults rapidly, reducing thermal and mechanical stress on critical power electronics.

The Mersen Protistor® range is widely used by OEMs and industrial engineers for protecting variable frequency drives, DC drives, UPS systems, converters and renewable energy equipment where dependable semiconductor protection is vital.

Typical Applications

  • Variable frequency drives (VFDs).
  • Industrial motor drives.
  • Power converters and inverters.
  • UPS systems.
  • Renewable energy equipment.
  • Semiconductor protection within industrial automation systems.

Technical Specifications

Item number Q330041
Catalogue No DN000UB69V250
Description Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 250A DIN 80 Blades
EAN/UPC Code 3605340361131
Rated voltage AC UL 690 V
Rated voltage DC UL 500 V
Rated voltage AC IEC 690 V
Ampere Rating 250 A
RoHS Compliant Yes
AC or DC AC/DC
Speed/Characteristic aR
Fuse Size NH000
Mounting Bolted
Clearing I2t At Rated Voltage 52000 A²s
Melting I2t 9860 A²s
AC Max I.R./Breaking Capacity I1: 200 kA
Connection/Terminal Material Silver-Plated Copper
Connection/Terminal Type DIN 80 Blades
Product Width 20 mm
Product Length 100 mm
Product Height 38.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 0.396 kg
Sell Pack Width 110 mm
Sell Pack Length 130 mm
Sell Pack Height 80 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.132 kg
Power Dissipation at Rated Current Value 45 W
HS Code 85361090
Country of Manufacture Tunisia
Fuse Type D / D0 (Neozed/Diazed), Semiconductor
Fuse Size NH000
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen Q330041 used for?

It is designed to provide ultra-fast protection for semiconductor devices including IGBTs, thyristors and power diodes used in industrial power electronics.

What is the current rating of this fuse?

The Mersen Q330041 has a 250 A rated current.

What voltage is the fuse rated for?

The fuse is rated for 690 V AC (IEC/UL) and 500 V DC (UL).

What type of fuse is the Q330041?

It is an aR high-speed semiconductor protection fuse designed specifically for protecting power electronic devices rather than general cable protection.

Where is the Q330041 commonly installed?

It is commonly installed in variable speed drives, inverters, converters, UPS systems and industrial power control equipment.

Trusted by Industrial Power Engineers Worldwide

Mersen Protistor® semiconductor fuses are trusted throughout the power electronics industry for delivering ultra-fast fault protection, helping maximise equipment uptime while protecting valuable semiconductor components.

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