A3T90 - 90Amp Fuse

A3T90 - 90Amp Fuse

When your electrical systems demand fast, dependable protection, the Mersen A3T90 Class T Fast-Acting Fuse delivers the performance professionals count on. Designed for high-demand commercial and industrial applications, this 90 amp Class T fuse helps protect sensitive equipment and electrical circuits from damaging overloads and short circuits before they become costly problems. Its fast-acting response helps reduce the risk of downtime, equipment damage, and unexpected maintenance issues, making it a smart choice for power distribution systems, control panels, UPS systems, transformers, and other mission-critical electrical applications.

One of the standout advantages of the A3T90 fuse is its combination of high current limitation and compact size. In crowded electrical enclosures where every inch matters, this fuse provides strong protection without taking up unnecessary space. The durable glass melamine body offers excellent dimensional stability for long-term reliability, while permanently stamped blade markings make identification quick and simple during inspections or replacement.

Whether you're maintaining industrial equipment, upgrading electrical infrastructure, or protecting valuable components from overcurrent events, the A3T90 fast-acting fuse provides the dependable circuit protection needed to keep systems running smoothly.

Key Features and Benefits

• Fast-Acting Circuit Protection – Quickly responds to short circuits and overloads to help minimize damage to electrical equipment.
• 90 Amp Capacity – Designed for applications requiring dependable medium-amperage overcurrent protection.
• Class T Current-Limiting Design – Helps reduce destructive fault current while maintaining a compact footprint.
• High Interrupting Rating – Rated up to 200 kA AC for demanding industrial and commercial electrical environments.
• Compact Space-Saving Design – Ideal for installations where panel space is limited.
• Durable Glass Melamine Construction – Built for dimensional stability and consistent performance.
• Copper Blade Terminals – Supports reliable electrical connections and conductivity.
• Permanent Fuse Identification – Blade-stamped catalog markings simplify maintenance and replacement.
• AC/DC Rated – Suitable for both AC and DC electrical applications.

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A3T90
  
• Product Series: A3T – Class T – Fast-Acting
  
• Fuse Class: Class T
  
• Fuse Type: Fast-Acting
  
• Ampere Rating: 90A
  
• Rated AC Voltage: 300VAC
  
• Rated DC Voltage: 160VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Mounting Type: Bolted
  
• Terminal Type: Blade
  
• Terminal Material: Copper
  
• Product Length: 54.9 mm
  
• Product Diameter: 20.6 mm
  
• Product Weight: 0.034 kg
  
• Body Material: GMG (Glass Melamine)
  
• Product Group: Low Voltage UL/CSA Fuses
  

Material Compliance and Certifications

• RoHS Compliant – Manufactured in compliance with Restriction of Hazardous Substances (RoHS) standards.
• Designed for low-voltage UL/CSA fuse applications.
• Engineered to support safe, dependable overcurrent protection in commercial and industrial environments.
  

Where It Works Best

• Industrial power distribution systems
• Commercial electrical panels
• Motor control centers
• UPS and backup power systems
• Transformers and control circuits
• Manufacturing and automation equipment
• High fault-current electrical systems
• Critical branch circuit protection applications