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MERSEN FUSE 6,9 URY 17/100 6,9URY17/100

MERSEN FUSE 6,9 URY 17/100 6,9URY17/100

British Standard fuse-link Protistor® 17×49 aR 690VAC IEC 100A designed for semiconductor protection and industrial power distribution.

SKU: V221255Alt SKU: BS17UY69V100MPN: V221255
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List Price £23.56 ex VAT
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Sold in packs of 10

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Why Choose the Mersen V221255 High-Speed Semiconductor Fuse?

The Mersen V221255 is a Protistor® BS88-4 high-speed semiconductor fuse engineered to provide rapid short-circuit protection for sensitive power electronic equipment. Rated at 100 A and 690 V AC, it features an aR operating class, making it ideal for protecting IGBTs, thyristors, diodes and other semiconductor devices while allowing overload protection to be provided elsewhere in the circuit.

Manufactured to IEC 60269-1, IEC 60269-4 and BS88-4 standards, the V221255 is part of Mersen's trusted Protistor® range. Its 17 × 49 mm British Standard body, bolt-mounted terminals and low I²t performance make it suitable for demanding industrial applications requiring fast fault interruption and dependable semiconductor protection.

Key Advantages

  • High-speed aR semiconductor fuse for power electronic protection.
  • 100 A rated current.
  • 690 V AC voltage rating.
  • 200 kA breaking capacity.
  • BS88-4 compliant 17 × 49 mm construction.
  • Very low let-through energy for semiconductor protection.
  • Bolt-mounted design for secure installation.
  • Suitable for worldwide industrial applications.

Key Features

  • Manufacturer: Mersen
  • Part number: V221255
  • Catalogue number: BS17UY69V100
  • Series: Protistor® BS88-4 17 × 49 aR URY.
  • British Standard semiconductor fuse.
  • Ceramic body with silver fuse elements.
  • Designed specifically for semiconductor protection.
  • Compatible with optional trip-indicator accessories.

Reliable Protection for Power Electronic Equipment

High-speed semiconductor fuses are specifically designed to protect expensive power electronic devices by clearing short-circuit faults before destructive energy reaches sensitive components. Their low I²t characteristics help extend equipment life while reducing repair costs and system downtime.

The Mersen V221255 combines proven Protistor® technology with BS88-4 compliance, making it suitable for industrial drives, converters, UPS systems, rectifiers and other demanding power conversion equipment requiring dependable semiconductor protection.

Typical Applications

  • Variable speed drives.
  • Industrial power converters.
  • Rectifiers.
  • UPS systems.
  • Soft starters.
  • IGBT protection.
  • Thyristor and diode protection.
  • Industrial power electronic equipment.

Technical Specifications

Item number V221255
Catalogue No BS17UY69V100
Description British Standard fuse-link Protistor® 17x49 aR 690VAC IEC 100A
EAN/UPC Code 3605340251579
Rated voltage AC IEC 690 V
Ampere Rating 100 A
RoHS Compliant Yes
AC or DC AC
Speed/Characteristic aR
Fuse Size 17x49
Mounting Bolted
Clearing I2t At Rated Voltage 3900 A²s
Melting I2t 625 A²s
AC Max I.R./Breaking Capacity I1: 200 kA
Connection/Terminal Material Copper
Connection/Terminal Type L Brackets
Product Diameter 18.5 mm
Product Length 77.2 mm
Sell Pack Quantity 10 EA
Sell Pack Weight 0.35 kg
Sell Pack Width 100 mm
Sell Pack Length 195 mm
Sell Pack Height 25 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.035 kg
Power Dissipation at Rated Current Value 33 W
HS Code 85361090
Fuse Type Semiconductor
Fuse Size 17x49 mm
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen V221255?

The Mersen V221255 is a Protistor® BS88-4 high-speed semiconductor fuse rated at 100 A and 690 V AC for protecting power electronic equipment.

What does the aR operating class mean?

An aR fuse provides short-circuit protection for semiconductor devices and should be used alongside separate overload protection where required.

What equipment is the V221255 designed to protect?

Typical applications include variable speed drives, converters, rectifiers, UPS systems and equipment containing IGBTs, thyristors and power diodes.

What is the fuse size?

The V221255 uses the BS88-4 17 × 49 mm body format with bolt-mounted terminals.

What is the breaking capacity?

The fuse has a rated AC breaking capacity of 200 kA at 690 V AC, providing dependable protection during high fault-current conditions.

Trusted Worldwide for Semiconductor Protection

Mersen Protistor® semiconductor fuses are trusted by OEMs, panel builders and industrial maintenance engineers to protect converters, drives and other high-power electronic equipment in demanding industrial environments.

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