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MERSEN FUSE 6,9 URS 17 P 25 BS17US69V25P

MERSEN FUSE 6,9 URS 17 P 25 BS17US69V25P

The Protistor® 17×49 gR fuse-link delivers reliable circuit protection for industrial low voltage applications, fully compliant with British Standard dimensions. Rated at 690V AC and 25A, it ensures safe and rapid interruption of fault currents, safeguarding critical equipment and minimising downtime.

SKU: X075897Alt SKU: BS17US69V25PMPN: X075897
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List Price £63.96 ex VAT
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Why Choose the Mersen X075897 BS17US69V25P Semiconductor Fuse?

The Mersen X075897 BS17US69V25P is a high-speed Protistor® BS88-4 British Standard semiconductor fuse-link designed to provide reliable protection for power semiconductor devices. Featuring a gR full-range operating characteristic, it protects against both overloads and short-circuit faults, making it ideal for safeguarding sensitive power electronics in demanding industrial environments.

Rated at 25 A with a 690 V AC IEC rating and 700 V AC / 700 V DC UL ratings, the BS17US69V25P is suitable for variable speed drives, rectifiers, UPS systems, inverters and industrial power converters. Its integrated striker provides convenient blown-fuse indication and can be used with compatible microswitches for remote monitoring.

Manufactured using Mersen's proven Protistor® technology, the fuse offers excellent current limitation, extremely high breaking capacity and dependable protection for valuable semiconductor equipment while helping minimise downtime and maintenance costs.

Key Advantages

  • gR full-range semiconductor protection.
  • Protects against both overload and short-circuit faults.
  • 25 A current rating.
  • 690 V AC IEC / 700 V AC & 700 V DC UL ratings.
  • Integrated striker for local or remote fuse indication.
  • Extremely high breaking capacity.
  • Compact BS88-4 17 × 49 mm construction.
  • Supports selective coordination in suitable distribution circuits.

Key Features

  • Manufacturer: Mersen
  • Series: Protistor® BS88-4
  • Model: BS17US69V25P
  • Manufacturer SKU: X075897
  • Fuse class: gR full-range semiconductor fuse.
  • 17 × 49 mm cylindrical body.
  • Integrated striker indicator.
  • British Standard BS88-4 design.
  • Bolted terminal arrangement.
  • UL Recognised.

Full-Range gR Semiconductor Protection

Unlike partial-range aR semiconductor fuses, the gR operating class provides protection against both overloads and short-circuit currents, offering comprehensive protection for semiconductor equipment when correctly coordinated within the electrical system. This makes the BS17US69V25P suitable for protecting diodes, thyristors, IGBTs and other sensitive power semiconductor devices.

The integrated striker allows rapid identification of an operated fuse and can be connected to optional microswitches for remote signalling in control panels and automated systems.

Typical Applications

  • Variable frequency drives (VFDs).
  • Industrial motor drives.
  • Rectifiers.
  • Power converters.
  • UPS systems.
  • Industrial automation equipment.
  • Semiconductor switching circuits.
  • Renewable energy power conversion systems.

Technical Specifications

Item number X075897
Catalogue No BS17US69V25P
Description British Standard fuse-link Protistor® 17x49 gR 690V AC UL 25A With Striker
EAN/UPC Code 3605340012712
Rated voltage AC UL 700 V
Rated voltage DC UL 700 V
Rated voltage AC IEC 690 V
Ampere Rating 25 A
AC or DC AC
Speed/Characteristic aR
Fuse Size 17x49
Mounting Bolted
Clearing I2t At Rated Voltage 285 A²s
Melting I2t 27 A²s
AC Max I.R./Breaking Capacity I1: 200 kA
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Copper
Connection/Terminal Type L Brackets
Product Diameter 18.5 mm
Product Width 27 mm
Product Length 77.2 mm
Product Height 24 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 0.18 kg
Sell Pack Width 110 mm
Sell Pack Length 140 mm
Sell Pack Height 40 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.06 kg
Power Dissipation at Rated Current Value 6.7 W
HS Code 85361050
Country of Manufacture India
Fuse Type Semiconductor
Fuse Size 17x49 mm
Fuse Class aR
Voltage 690 V

Frequently Asked Questions

What is the Mersen X075897 used for?

It provides full-range protection for power semiconductor devices used in industrial drives, converters, UPS systems, rectifiers and other power electronic equipment.

What is the current rating of the X075897?

The Mersen X075897 has a rated current of 25 A.

What voltage is this fuse rated for?

The fuse is rated at 690 V AC (IEC) and 700 V AC / 700 V DC (UL).

What does the gR classification mean?

A gR fuse provides full-range protection against both overload and short-circuit currents for semiconductor applications when correctly coordinated.

Does this fuse include an indicator?

Yes. The BS17US69V25P includes an integrated striker that provides blown-fuse indication and supports remote signalling with compatible accessories.

Which equipment commonly uses this fuse?

This fuse is commonly installed in variable speed drives, rectifiers, UPS systems, industrial converters and other semiconductor-based power control equipment.

Trusted Semiconductor Protection from Mersen

Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and maintenance engineers to deliver dependable protection for valuable semiconductor equipment operating in demanding industrial environments.

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