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MERSEN FUSE 6,9 GRB 17/25 6,9GRB17/25

MERSEN FUSE 6,9 GRB 17/25 6,9GRB17/25

British Standard fuse-link Protistor® 17×49 gR 690VAC IEC 25A designed for reliable circuit protection in industrial applications.

SKU: Z220960Alt SKU: BS17GB69V25MPN: Z220960
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Why Choose the Mersen Z220960 Protistor® BS88-4 High Speed Semiconductor Fuse?

The Mersen Z220960 is a genuine Protistor® BS88-4 high speed semiconductor fuse designed to provide full-range protection for power semiconductor devices. Supplied under catalogue number BS17GB69V25, it features a 25 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating in a compact 17 × 49 mm British Standard fuse-link format.

Designed with a gR operating class, the Z220960 provides protection against both overloads and short circuits, making it suitable for safeguarding IGBTs, thyristors, diodes and other semiconductor devices used in industrial power electronics. The integrated striker enables remote indication of fuse operation, simplifying maintenance and reducing equipment downtime.

Manufactured to comply with IEC 60269-1 and IEC 60269-4 and recognised by UL, the Mersen Z220960 delivers high breaking capacity and low let-through energy for reliable protection in demanding industrial applications.

Key Advantages

  • Genuine Mersen Protistor® semiconductor protection fuse.
  • 25 A current rating.
  • 690 V AC IEC / 700 V AC UL voltage rating.
  • gR operating class for full-range semiconductor protection.
  • 17 × 49 mm BS88-4 fuse-link.
  • Integrated striker for remote indication.
  • High breaking capacity with low let-through energy.
  • UL Recognised and IEC compliant.

Key Features

  • Manufacturer: Mersen.
  • Series: Protistor® BS88-4.
  • Model: Z220960.
  • Catalogue number: BS17GB69V25.
  • Current rating: 25 A.
  • Rated voltage: 690 V AC IEC / 700 V AC UL.
  • Operating class: gR.
  • Fuse size: 17 × 49 mm.
  • Indicator: Integrated striker.
  • British Standard BS88-4 construction.

Fast, Full-Range Protection for Power Electronics

The Mersen Z220960 is engineered to rapidly interrupt fault currents before excessive thermal energy can damage expensive semiconductor devices. Its gR characteristic provides both overload and short-circuit protection, making it ideal for modern power conversion equipment where maximum reliability is essential.

The integrated striker allows quick visual and remote indication following fuse operation, enabling faster maintenance and minimising production downtime in industrial installations.

Typical Applications

  • Variable speed drives (VSDs).
  • Industrial power converters.
  • UPS systems.
  • Renewable energy inverters.
  • Soft starters.
  • IGBT, thyristor and diode protection.
  • Industrial automation and control panels.

Technical Specifications

Item number Z220960
Catalogue No BS17GB69V25
Description British Standard fuse-link Protistor® 17x49 gR 690VAC IEC 25A
EAN/UPC Code 3605340248487
Rated voltage AC UL 700 V
Rated voltage DC UL 600 V
Rated voltage AC IEC 690 V
Ampere Rating 25 A
AC or DC AC
Fuse Size 17x49
Mounting Bolted
Clearing I2t At Rated Voltage 170 A²s
Melting I2t 26.8 A²s
AC Max I.R./Breaking Capacity I1: 200 kA
Design Details gRB
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 0.39 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 0.039 kg
Power Dissipation at Rated Current Value 8 W
HS Code 85361050
Country of Manufacture India
Fuse Type Semiconductor
Fuse Size 17x49 mm
Voltage 690 V

Frequently Asked Questions

What is the Mersen Z220960 used for?

The Z220960 is a high speed semiconductor fuse designed to provide full-range protection for industrial power electronic equipment including converters, drives and UPS systems.

What is the current rating of the Z220960?

The Mersen Z220960 has a rated current of 25 A.

What voltage is the Z220960 rated for?

It is rated at 690 V AC to IEC standards, 700 V AC under UL standards and 600 V DC under UL.

What does the gR operating class mean?

The gR operating class provides full-range protection for semiconductor devices against both overloads and short circuits.

Does the Z220960 include an indicator?

Yes. The fuse includes an integrated striker that provides mechanical indication and can be used for compatible remote signalling systems.

Trusted Protection for Industrial Power Electronics

Mersen Protistor® BS88-4 semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for delivering reliable protection of sensitive power electronic equipment.

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