A2D70R - 70 Amp Fuse

A2D70R - 70 Amp Fuse

The Mersen A2D70R Amp-Trap® 2000® fuse is made for electrical systems that need dependable protection day after day. Rated at 70 Amps and designed for both 250VAC and 250VDC applications, this Class RK1 time-delay fuse helps protect motors, feeders, branch circuits, and other equipment from overloads and short circuits without creating unnecessary interruptions during startup.

In many industrial and commercial systems, motors draw a temporary surge of current when they start. Standard fuses can open during these brief spikes, even when nothing is wrong. The A2D70R is built to handle those normal inrush currents while still responding quickly when a real fault occurs. That balance helps reduce downtime and protects connected equipment from damage.

Maintenance is easier, too. The built-in SmartSpot® indicator gives a clear visual signal when the fuse opens, helping your technicians identify problems faster without spending extra time troubleshooting. Mersen also designed the fuse with durable materials, including tin-plated copper blade terminals and a PolyTube body suited for demanding environments.

The A2D70R is often used as a replacement for older Class H, K, and RK5 fuses, making it a practical choice for retrofit work and system upgrades. Whether you're installing it in motor control centers, HVAC equipment, or industrial power distribution systems, this fuse delivers reliable overcurrent protection where it matters most.

Key Features and Benefits

• 70 Amp Class RK1 time-delay fuse: Designed for dependable motor and circuit protection.
• Dual voltage capability: Designed for 250VAC and 250VDC applications.
• Equipment protection: Helps protect motors, feeders, switches, and branch circuits.
• Time-delay performance: Helps reduce nuisance fuse openings during motor startup.
• High interrupting rating: Rated at 200 kA for strong short-circuit protection.
• SmartSpot® blown-fuse indicator: Supports faster maintenance identification.
• Replacement compatibility: Compatible replacement for older Class H, K, and RK5 fuses.
• Tin-plated copper blade terminals: Designed for dependable conductivity.
• Commercial and industrial compatibility: Suitable for demanding electrical systems.
  

Technical Specifications

• Catalog Number: A2D70R
  
• Series: A2D-R Amp-Trap® 2000®
  
• Fuse Class: RK1
  
• Fuse Type: Time-Delay
  
• Ampere Rating: 70A
  
• Voltage Rating: 250VAC / 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Mounting Type: Clip
  
• Indication Type: SmartSpot®
  
• Body Material: PolyTube
  
• Product Length: 149.4 mm
  
• Product Diameter: 26.9 mm
  
• Product Weight: 0.1338 kg
  

Material Compliance and Certifications

• RoHS Compliant: Supports environmental compliance requirements.
• UL/CSA applications: Designed for low-voltage fuse applications.
• IEC Type 2 coordination: Supports coordinated protection requirements.
  

Where It Works Best

• The Mersen A2D70R works well in motor control centers, HVAC systems, industrial machinery, commercial buildings, and power distribution equipment where reliable time-delay overcurrent protection is important. It is especially useful in applications with motor startup surges that require both flexibility and fast fault response.