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** Picture is for identification purposes only and may not represent the actual amperage of the product listed **

A3T225 - 225Amp Fuse

  • 225 Amp
  • 200 kA @ 300 V.AC Volts AC
FusesSKU: A3T225

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A3T225 - 225Amp Fuse Description

A3T225 - 225Amp Fuse

The Mersen A3T225 Class T Fast-Acting Fuse is made for electrical systems that need quick response and dependable protection. Rated at 225 amps, this Class T fuse helps protect equipment from overloads and short circuits before they turn into larger problems. Its fast-acting design makes it a strong fit for commercial and industrial applications where protecting sensitive components and reducing downtime are important.

Whether it’s installed in a switchboard, panelboard, UPS system, or industrial control setup, this fuse is designed to help keep systems running safely and efficiently.

Key Features and Benefits

  • Fast-acting protection for overload and short-circuit conditions
  • High current-limiting performance helps reduce equipment damage
  • Compact Class T design saves space inside electrical enclosures
  • 225A amp rating for demanding power distribution applications
  • Rated for both 300VAC and 160VDC systems
  • Copper blade terminals for reliable conductivity
  • Bolted mounting design for secure installation
  • 200kA interrupting rating for high fault-current environments

Technical Specifications

  • Catalog Number: A3T225
  • Series: A3T – Class T – Fast-Acting
  • Fuse Class: Class T
  • Ampere Rating: 225A
  • Voltage Rating (AC): 300VAC
  • Voltage Rating (DC): 160VDC
  • Frequency: 50/60 Hz
  • Interrupting Rating: 200kA AC
  • Mounting Type: Bolted
  • Terminal Type: Blade
  • Terminal Material: Copper
  • Body Material: GMG (Glass Melamine)
  • Product Diameter: 33.8 mm
  • Product Length: 69.8 mm
  • Product Weight: 0.1234 kg

Material Compliance and Certifications

  • RoHS Compliant
  • Designed for low-voltage UL fuse applications
  • Suitable for both AC and DC electrical systems

Where It Works Best

  • The A3T225 works well in commercial and industrial electrical systems where fast fault protection is needed. Common applications include motor control centers, switchboards, panelboards, power distribution equipment, UPS systems, and industrial machinery. Its compact size and high interrupting capacity make it especially useful in facilities with limited panel space and high available fault current.

Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.

Mersen® is a registered trademark of Mersen S.A. Products sold are surplus, used, or refurbished and are NOT supplied by Mersen S.A. or its affiliates.

Specifications

  • Width:1.312
  • Depth:1.312
  • Height:2.75
  • Amperes:225
  • A.I.C. Rating & Volts:200 kA @ 300 V.AC
  • Type:A3T
  • Additional Notes:Knife-Blade Style, Non-Indicating, Very Fast-Acting, current-limiting Class T Fuse

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You may return unused items within 30 days of delivery for a full refund.

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