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MERSEN FUSE 6,9 URB 000 D08L 250 6,9URB000D08L250

MERSEN FUSE 6,9 URB 000 D08L 250 6,9URB000D08L250

High-speed Protistor® fuse for semiconductor protection rated at 250A, 690VAC IEC with striker indication and DIN 80 blade terminals.

SKU: Z330187Alt SKU: DN000UB69V250LMPN: Z330187
Price
List Price £73.55 ex VAT
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£73.55
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Why Choose the Mersen Z330187 Protistor® High-Speed Fuse?

The Mersen Z330187 (DN000UB69V250L) is a high-performance square body semiconductor protection fuse from the trusted Protistor® series, engineered to provide ultra-fast protection for sensitive power electronic components. Designed for demanding industrial applications, this aR characteristic fuse delivers exceptional protection for diodes, thyristors, IGBTs and other semiconductor devices used in power conversion systems.

Manufactured by Mersen, a global leader in electrical protection solutions, the Z330187 combines high breaking capacity, low let-through energy (I²t) and reliable fault interruption to help minimise equipment damage and reduce costly downtime. Its robust square body construction, silver-plated contacts and integrated striker ensure dependable performance in industrial environments.

With a 250 A current rating and a 690 V AC IEC rated voltage, the Mersen Z330187 is ideally suited for variable speed drives, UPS systems, soft starters, industrial converters and renewable energy equipment requiring fast semiconductor protection.

Key Advantages

  • Ultra-fast aR semiconductor protection fuse for power electronics.
  • 250 A current rating for demanding industrial applications.
  • 690 V AC IEC rated voltage for high-power systems.
  • High interrupting capacity provides excellent fault protection.
  • Integrated striker indicator for fuse operation monitoring.
  • Silver-plated contacts for reliable electrical performance.

Key Features

  • Mersen Protistor® semiconductor fuse series.
  • Model: Z330187 / DN000UB69V250L.
  • 250 A rated current.
  • 690 V AC IEC operating voltage.
  • aR operating characteristic for semiconductor protection.
  • Square body NH000 design with DIN 80 blade contacts.
  • Integrated mechanical striker indicator.
  • Suitable for protecting IGBTs, SCRs, diodes and thyristors.

Reliable Protection for Power Electronics

High-speed semiconductor fuses are specifically designed to protect sensitive power electronic devices against short-circuit faults before damaging energy reaches the equipment. Their extremely fast operating characteristics provide significantly lower let-through energy than conventional industrial fuses.

The Mersen Protistor® range is widely specified for industrial drives, renewable energy systems, UPS installations and power conversion equipment where reliable semiconductor protection is essential for maintaining system availability.

Typical Applications

  • Variable frequency drives (VFDs).
  • Industrial motor drives.
  • Power converters and rectifiers.
  • UPS systems.
  • Renewable energy inverters.
  • Industrial automation and power distribution equipment.

Technical Specifications

Item number Z330187
Catalogue No DN000UB69V250L
Description Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 250A With Striker DIN 80 Blades
EAN/UPC Code 8430399015514
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
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Silver-Plated Copper
Connection/Terminal Type DIN 80 Blades
Product Width 20 mm
Product Length 100 mm
Product Height 55.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 0.3849 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 0.1283 kg
Power Dissipation at Rated Current Value 45 W
HS Code 85361090
Country of Manufacture Tunisia
Fuse Type Semiconductor
Fuse Size NH000
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen Z330187 used for?

It is a high-speed semiconductor protection fuse designed to protect power electronic devices such as IGBTs, thyristors and diodes from short-circuit faults.

What is the current rating of this fuse?

The Mersen Z330187 has a 250 A current rating.

What voltage is this fuse rated for?

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

What does the aR fuse characteristic mean?

An aR fuse provides ultra-fast short-circuit protection specifically for semiconductor devices and is intended to be used alongside overload protection.

Which applications commonly use this fuse?

The Z330187 is commonly installed in variable speed drives, power converters, UPS systems, renewable energy equipment and other industrial power electronic applications.

Trusted by Industrial Engineers Worldwide

Mersen Protistor® semiconductor fuses are trusted worldwide for protecting critical power electronic equipment, helping maximise system reliability while reducing maintenance costs and downtime.

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