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Y221327 In stock

Y221327 High Speed Square Body Fuse 690V, 350A

The Y221327 is a high speed square body fuse designed and tested to IEC 60269-4 and VDE 636-23. It features superior cycling capability and is suited to protect power inverters, motor drives and UPS systems.

  • Fuse size 000
  • Ultra fast acting
  • Superior cycling capability
  • aR class according to IEC 60269-4 and VDE 636-23
  • Very low I2t for improved semiconductor protection
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The Y221327 is formerly known as a Ferraz Shawmut fuse.

Semiconductor protection fuses are used to protect against overcurrent in power electronic equipment. Semiconductor fuses are specifically designed to reduce the I2t, peak let-through current and arc voltages during a fault to protect and isolate semiconductor components such as diodes, thyristors and SCRs.

Certifications & Approvals
RoHS Compliant, UL/CSA Recognised, EAC Rated, CE Marked

Typical Applications

  • Protection of inverters
  • Motor drives
  • UPS systems
  • Similar 690V or less equipment

Refer to manufacturer’s datasheet for full technical information.

CE MarkedRoHS CompliantUL RecognisedIEC RatedEAC Marked




EAC Marked, RoHS Compliant


UL Recognised


IEC 60269-4 VDE 636-23

Rated Current (A)


Rated Voltage (V)


Fuse Category


Voltage Type


Breaking Capacity


Product Type

British Standard BS88 Fuse

Packaging Type


Mersen is a global expert in electrical specialties and advanced materials for high-tech industries. Leading experts in the safety and reliability of electrical equipment, Mersen offer global electrical protection solutions, manufacturing a specialist range of fuses and fusegear.

Formerly known as Ferraz Shawmut, Mersen offers a comprehensive range of North American (UL and CSA) and European IEC (DIN, NF, BS) fuses, fusegear and fuse systems.

Mersen’s products prevent the destruction of industrial and commercial electrical equipment, ensure an uninterrupted power supply and help to stabilise the electrical network. The company’s industrial fuses and all related accessories prevent short circuits, and surge protection devices help to protect against damage from power surges.


Mersen, previously Ferraz Shawmut, is a leading manufacturer of circuit protection and offer a wide range of fuses that comply to various standards such as BS, IEC, DIN and many others. They also produce suitable fuse holders for easy access to replace blown fuses. They also have suitable microswitches and trip indicators available within their range.

Learn more about Mersen products by getting in touch with GD Rectifiers.

Product Catalogues

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Mersen Surge Trap Catalogue

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Mersen Product Catalogue 2019

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Mersen Product Catalogue 2020

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Mersen Safety & Reliability for Electrical Power Catalogue

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