A2D225R - 225 Amp Fuse

A2D225R - 225 Amp Fuse

When your electrical systems are exposed to high fault currents, reliable circuit protection becomes critical. The Mersen A2D225R Amp-Trap 2000® Class RK1 Time-Delay Fuse is built to help protect motors, feeders, branch circuits, and sensitive electrical components from costly damage caused by overloads and short circuits. Rated at 225 amps with both 250VAC and 250VDC capability, this industrial-grade fuse combines fast short-circuit response with the time-delay performance needed to handle normal motor in-rush currents without unnecessary fuse openings. That means better equipment protection, improved uptime, and fewer interruptions in demanding commercial and industrial environments.

What makes the A2D225R stand out is its ability to provide high-level current limitation while still supporting heavy-duty motor applications. During extreme fault conditions, the fuse reacts quickly to help minimize damage to motor starters, switches, and connected electrical equipment. At the same time, its time-delay design allows temporary startup surges to pass through safely, helping your operations continue smoothly. The built-in SmartSpot® indication system also gives maintenance teams a quick visual way to identify an opened fuse, reducing troubleshooting time and improving service efficiency.

Key Features and Benefits

• 225 Amp Class RK1 Time-Delay Fuse: Designed for advanced overcurrent and short-circuit protection.
• Amp-Trap 2000® technology: Helps safeguard motors, switches, starters, and distribution equipment.
• Time-delay performance: Allows temporary motor in-rush currents without unnecessary fuse operation.
• SmartSpot® blown fuse indication: Enables quicker identification and maintenance.
• 200 kA interrupting rating: Delivers high fault-current protection for demanding electrical systems.
• Suitable for AC and DC applications: Rated for both 250VAC and 250VDC systems.
• Retrofit replacement capability: Can replace existing Class H, K, and RK5 fuses in many retrofit applications.
• Blade terminal design: Features tin-plated copper connections for reliable conductivity.
• Compact construction: Helps simplify installation in industrial fuse clips and distribution equipment.
• RoHS compliant construction: Supports modern environmental and material standards.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2D225R
  
• Product Series: A2D-R / Amp-Trap 2000®
  
• Product Type: Class RK1 Time-Delay Fuse
  
• Ampere Rating: 225A
  
• Voltage Rating AC: 250VAC
  
• Voltage Rating DC: 250VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: RK1
  
• Fuse Characteristic: Time Delay
  
• Interrupting Rating: 200 kA
  
• Indication Type: SmartSpot®
  
• Terminal Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Mounting: Clip
  
• Body Material: PolyTube
  
• Product Length: 8.63 in
  
• Product Diameter: 2.06 in
  
• Product Weight: 1.64 lb
  
• Compliance: RoHS Compliant
  

Material Compliance and Certifications

• Durable construction: Manufactured using PolyTube insulating material and tin-plated copper blade terminals for dependable electrical performance and corrosion resistance.
• RoHS compliant: Supports environmentally conscious manufacturing standards and modern industrial compliance requirements.
• Engineered for UL applications: Designed to provide reliable performance in commercial and industrial electrical systems where dependable circuit protection matters most.
  

Where It Works Best

• Motor control centers (MCCs)
• Industrial machinery and automation equipment
• HVAC systems and large motor loads
• Manufacturing and processing facilities
• Electrical distribution panels
• Feeders and branch circuit protection
• Pump systems and conveyor equipment
• Retrofit projects replacing older Class H, K, or RK5 fuses
• Facilities requiring high interrupting capacity and enhanced short-circuit protection