A2D9R - 9 Amp Fuse

A2D9R - 9 Amp Fuse

Keeping your motors and electrical equipment protected starts with using the right fuse, and the Mersen A2D9R Amp-Trap 2000® fuse is built for exactly that job. This 9A Class RK1 time-delay fuse is designed to handle the everyday demands of industrial and commercial electrical systems without sacrificing protection. It reacts quickly during short circuits and fault conditions, yet still allows normal motor startup currents to pass without unnecessary fuse openings. That combination makes it a smart choice for protecting motor starters, control panels, feeders, branch circuits, and HVAC equipment where dependable performance matters day after day.

One feature electricians and maintenance teams appreciate is the built-in SmartSpot® indicator, which makes it easier to identify when the fuse has opened. Instead of wasting valuable time troubleshooting, technicians can quickly spot the issue and get systems back online faster. The A2D9R also offers a high 200 kA interrupting rating for added protection in high fault-current environments. With its compact ferrule design, durable construction, and ability to replace many older Class H, K, and RK5 fuses already in service, this fuse is a practical solution for both new installations and maintenance applications.

Key Features and Benefits

• Class RK1 time-delay fuse: Designed for reliable overcurrent protection.
• Motor startup support: Helps reduce nuisance openings caused by temporary motor inrush currents.
• Fast fault response: Reacts quickly during short-circuit and fault conditions.
• SmartSpot® indicator: Allows quicker troubleshooting when the fuse opens.
• High interrupting rating: Rated at 200 kA for demanding electrical systems.
• Equipment protection: Helps protect switches, contactors, starters, and other electrical components.
• Compact ferrule design: Supports easy installation.
• Replacement compatibility: Suitable replacement for many older Class H, K, and RK5 fuses.
• Industrial and commercial use: Designed for industrial, commercial, and OEM applications.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2D9R
  
• Series: Amp-Trap 2000® A2D-R
  
• Fuse Class: RK1
  
• Fuse Type: Time-Delay
  
• Ampere Rating: 9A
  
• Voltage Rating: 250VAC / 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Mounting Type: Clip
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Indication System: SmartSpot®
  
• Body Material: PolyTube
  
• Product Length: 2 in
  
• Product Diameter: 0.56 in
  
• Product Weight: 0.037 lb
  
• UPC/EAN: 782001990794
  

Material Compliance and Certifications

• RoHS Compliant: Supports environmental compliance requirements.
• UL/CSA applications: Designed for Low Voltage fuse applications.
• Industrial-grade protection: Manufactured for circuit protection applications.
  

Where It Works Best

• The Mersen A2D9R fuse works well in motor circuits, HVAC systems, industrial machinery, control panels, feeders, and branch circuits where dependable time-delay protection is important. It is especially useful in applications with motor startup surges that require added protection against damaging overcurrent and short-circuit events without interrupting normal operation.