A2D8R - 8 Amp Fuse

A2D8R - 8 Amp Fuse

If you’re working with motor circuits or industrial equipment, you know how frustrating nuisance fuse openings can be. The Mersen A2D8R Amp-Trap 2000® fuse is made to help with that. This 8A Class RK1 time-delay fuse is designed to ride through normal motor startup currents while still opening quickly when a real fault happens. The result is better protection for electrical equipment and less unnecessary downtime.

The built-in SmartSpot® indicator is another feature that makes day-to-day maintenance easier. When the fuse opens, the indicator helps technicians find the problem faster instead of spending extra time testing multiple fuses. That can make a noticeable difference during service calls or routine maintenance checks.

The A2D8R is commonly used as a replacement for older Class H, K, and RK5 fuses, especially in existing industrial and commercial systems. Its compact ferrule design fits a wide range of equipment, and the high interrupting rating helps provide dependable protection in demanding applications.

Key Features and Benefits

• Class RK1 time-delay fuse: Designed for industrial and commercial applications.
• Motor startup protection: Helps reduce nuisance openings during motor startup.
• SmartSpot® indicator: Makes blown fuses easier to identify.
• High interrupting rating: Rated at 200 kA for short-circuit protection.
• Equipment protection: Designed to protect motors, starters, switches, and control equipment.
• Compact ferrule design: Supports easy installation.
• Replacement compatibility: Can replace many older Class H, K, and RK5 fuses.
• Tin-plated copper terminals: Help resist corrosion.
• AC/DC compatibility: Suitable for AC and DC applications.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2D8R
  
• Product Series: A2D-R – Amp-Trap 2000®
  
• Fuse Class: Class RK1
  
• Fuse Type: Time-Delay
  
• Ampere Rating: 8A
  
• Rated AC Voltage: 250VAC
  
• Rated DC Voltage: 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA
  
• Indication Type: SmartSpot®
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Mounting Style: Clip
  
• Body Material: PolyTube
  
• Product Diameter: 14.2 mm
  
• Product Length: 50.8 mm
  
• Product Weight: 0.0168 kg
  

Material Compliance and Certifications

• RoHS Compliant: Supports environmental compliance requirements.
• UL/CSA applications: Designed for low-voltage fuse applications.
• PolyTube construction: Provides durability and insulation.
• Industrial circuit protection: Built for dependable industrial applications.
  

Where It Works Best

• The Mersen A2D8R is a good fit for equipment that sees regular startup surges or heavy-duty operation. It’s often used in HVAC systems, motor control centers, conveyor systems, pump controls, industrial machinery, and commercial electrical distribution panels. Electricians and maintenance teams also use it when upgrading older fuse installations that need improved short-circuit protection and better time-delay performance.