A2D100R - 100 Amp Fuse

A2D100R - 100 Amp Fuse

Electrical systems with motors and heavy startup loads need protection that can handle sudden surges without shutting everything down unnecessarily. The Mersen A2D100R Amp-Trap 2000® fuse is built for exactly that kind of job. This 100A Class RK1 time-delay fuse helps protect circuits, motors, and electrical equipment from damaging fault currents while still allowing temporary inrush currents during startup.

In many industrial and commercial systems, nuisance fuse openings can slow production and create extra maintenance work. The A2D100R helps reduce those interruptions by combining time-delay performance with fast short-circuit protection. It reacts quickly during serious fault conditions to help protect motor starters, switches, transformers, and other important components connected to the circuit.

Whether you used it in motor control centers, HVAC equipment, manufacturing machinery, or commercial distribution panels, the Mersen A2D100R delivers dependable overcurrent protection where reliable performance matters every day.

Key Features and Benefits

• 100A Class RK1 time-delay fuse: Designed for industrial and commercial applications.
• Reduced nuisance openings: Helps minimize fuse openings caused by motor startup currents.
• Fast short-circuit response: Helps protect connected equipment during fault conditions.
• SmartSpot® indication: Supports faster troubleshooting with blown-fuse indication.
• 200 kA interrupting rating: Provides strong fault-current protection.
• AC and DC compatibility: Suitable for both AC and DC applications.
• Fuse replacement compatibility: Compatible replacement for older Class H, K, and RK5 fuses.
• Tin-plated copper blade terminals: Provide dependable conductivity.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2D100R
  
• Product Series: A2D-R / Amp-Trap 2000®
  
• Product Type: Class RK1 Time-Delay Fuse
  
• Ampere Rating: 100A
  
• 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 Style: Clip
  
• Body Material: PolyTube
  
• Dimensions:
  • Length: 149.4 mm
  • Diameter: 26.9 mm
  • Weight: 0.1338 kg

Material Compliance and Certifications

• RoHS Compliant
• Designed for UL and CSA low-voltage fuse applications
• Supports IEC Type 2 “no damage” protection strategies
• Manufactured for industrial overcurrent protection systems
  

Where It Works Best

• The Mersen A2D100R fuse is commonly used in systems that experience temporary startup surges but still require dependable protection against overloads and short circuits.
• Motor control centers (MCCs)
• HVAC systems
• Industrial machinery
• Distribution and power panels
• Feeders and branch circuits
• Pump systems
• Conveyor systems
• OEM equipment
• Manufacturing facilities
• Commercial electrical service equipment