A2D90R - 90 Amp Fuse

A2D90R - 90 Amp Fuse

The Mersen A2D90R Amp-Trap 2000® fuse is designed for electrical systems that need dependable overcurrent protection without unnecessary downtime. Rated at 90 amps and built for both 250VAC and 250VDC applications, this Class RK1 time-delay fuse helps you protect motors, branch circuits, feeders, and other important equipment from damaging short circuits and overloads.

One of the biggest advantages of the A2D90R is its ability to handle temporary motor startup currents without opening too soon. In real-world applications, that means fewer nuisance interruptions and more reliable system performance. At the same time, the fuse reacts quickly during serious fault conditions to help you limit damage to starters, switches, and connected components.

Mersen also includes its SmartSpot® blown fuse indicator, which makes it easier to identify when the fuse has opened. That small detail can save valuable troubleshooting time during maintenance or repairs. The fuse features durable tin-plated copper blade terminals and a strong PolyTube body designed for long service life in commercial and industrial environments.

Key Features and Benefits

• 90 Amp Class RK1 time-delay fuse: Designed for dependable overcurrent protection.
• Motor startup protection: Helps reduce nuisance openings caused by motor inrush currents.
• Fast fault response: Reacts quickly during short-circuit conditions.
• SmartSpot® visual indication: Supports easier troubleshooting and maintenance.
• Equipment compatibility: Suitable for motors, feeders, branch circuits, and control panels.
• Replacement capability: Replaces older Class H, K, and RK5 fuses.
• Dual voltage rating: Rated for 250VAC and 250VDC systems.
• High interrupting capacity: Rated at 200 kA for demanding fault-current applications.
• Tin-plated copper blade terminals: Designed for reliable conductivity.
• PolyTube construction: Durable insulating body built for long service life.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2D90R
  
• Series: Amp-Trap 2000® A2D-R
  
• Fuse Class: RK1
  
• Type: Time-Delay
  
• Amp Rating: 90A
  
• Voltage Rating AC: 250VAC
  
• Voltage Rating DC: 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Mounting: Clip Mount
  
• Indication Type: SmartSpot®
  
• Body Material: PolyTube
  
• Length: 149.4 mm
  
• Diameter: 26.9 mm
  
• Weight: 0.1338 kg
  

Material Compliance and Certifications

• RoHS Compliant: Supports environmental compliance requirements.
• UL/CSA applications: Designed for low-voltage fuse applications.
• Industrial standards: Manufactured to meet industrial electrical protection standards.
  

Where It Works Best

• The A2D90R is commonly used in industrial and commercial electrical systems including motor control centers, HVAC equipment, pumps, compressors, manufacturing equipment, and power distribution panels. Its time-delay characteristics make it especially useful in applications where temporary startup surges are common but dependable short-circuit protection is still essential.