A2D1R - 1 Amp Fuse

A2D1R - 1 Amp Fuse

When your electrical systems faces sudden overloads or short circuits, having the right fuse in place can make all the difference. The Mersen A2D1R Amp-Trap 2000® Class RK1 Time-Delay Fuse is designed to help you protect motors, branch circuits, and feeder circuits from damaging fault conditions while still allowing the temporary inrush currents that occur during motor startup. That balance between fast protection and reliable performance is what makes this fuse a trusted solution in commercial and industrial electrical systems.

Built for demanding environments, the A2D1R combines advanced current-limiting protection with a time-delay design that helps you reduce nuisance openings. In practical terms, that means your equipment stays protected without unnecessary interruptions to operation. Its Class RK1 construction reacts quickly under severe fault conditions to help minimize damage to switches, contactors, motor starters, and other valuable electrical components. With a high 200 kA interrupting rating, this fuse is well-suited for applications where dependable fault protection is critical.

Key Features and Benefits

• Class RK1 Time-Delay Design: Helps prevent nuisance openings caused by temporary motor startup currents.
• Fast Current-Limiting Protection: Helps reduce damage during overloads and short-circuit events.
• 200 kA Interrupting Rating: Supports high-performance fault protection in demanding applications.
• Ideal Upgrade Replacement: For older Class H, K, and RK5 fuses.
• Compact Ferrule Construction: Simplifies installation in compatible fuse clips and holders.
• Dual Voltage Capability: Rated for both 250VAC and 250VDC applications.
• Durable Construction Materials: Including PolyTube insulation and tin-plated copper terminals.
• Helps Protect Critical Equipment: Such as motor starters, switches, and control components.
• Designed for Industrial and Commercial Systems: Where reliable overcurrent protection is essential.
  

Technical Specifications

• Catalog Number: A2D1R
  
• Manufacturer Series: A2D-R – Amp-Trap 2000®
  
• Fuse Class: Class RK1
  
• Fuse Type: Time-Delay
  
• Ampere Rating: 1 Amp
  
• Rated Voltage AC: 250VAC
  
• Rated Voltage DC: 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Mounting Type: Clip
  
• Body Material: PolyTube
  
• Product Diameter: 14.2 mm
  
• Product Length: 50.8 mm
  
• Product Weight: 0.0168 kg
  
• Product Group: Low Voltage UL/CSA Fuses
  

Material Compliance and Certifications

• RoHS Compliant: To support environmental and material safety standards.
• Designed for use in UL/CSA low-voltage fuse applications: Engineered to meet the performance demands of commercial and industrial electrical protection systems.
  

Where It Works Best

• The A2D1R Amp-Trap 2000® fuse performs especially well in applications where equipment protection and operational reliability are both priorities. Its time-delay characteristics make it a smart choice for systems that experience temporary startup surges while still requiring dependable short-circuit protection.
• Common applications include:
• Motor control centers
• HVAC systems and compressors
• Industrial processing equipment
• Manufacturing machinery
• Commercial electrical distribution systems
• Branch and feeder circuit protection
• Control panels and switchgear assemblies