A2D175R - 175 Amp Fuse

A2D175R - 175 Amp Fuse

The Mersen A2D175R Amp-Trap 2000® fuse is made for electrical systems that need reliable protection day after day. Rated at 175 amps for both 250VAC and 250VDC applications, this Class RK1 time-delay fuse is commonly used to help you protect motors, feeders, branch circuits, and industrial equipment from overloads and short circuits. Its time-delay design allows normal motor startup currents to pass without unnecessary fuse opening, while still reacting quickly during serious fault conditions.

In busy industrial and commercial environments, downtime can become expensive fast. The A2D175R helps you reduce that risk by providing dependable circuit protection for equipment such as motor starters, switches, HVAC systems, pumps, and compressors. Mersen’s built-in SmartSpot® indicator also makes maintenance simpler by giving technicians a quick visual sign when the fuse has opened. That means less time spent troubleshooting and faster service when replacement is needed.

This fuse is also a convenient replacement option for older Class H, K, and RK5 fuses, making upgrades easier without major system changes. Its high interrupting capacity and durable construction make it a solid fit for demanding electrical applications where your safety and consistent performance matter.

Key Features and Benefits

• 175A current rating: For industrial and commercial applications.
• Class RK1 time-delay design: Helps reduce nuisance openings.
• Rated for 250VAC and 250VDC systems: Suitable for AC and DC applications.
• Fast short-circuit protection: With Amp-Trap 2000® technology.
• SmartSpot® indicator: Allows quick fuse status identification.
• 200 kA interrupting rating: For high fault-current protection.
• Tin-plated copper blade terminals: For reliable conductivity.
• Direct replacement option: For many Class H, K, and RK5 fuses.
• Helps protect downstream electrical equipment: From damage.
  

Technical Specifications

• Manufacturer Part Number: A2D175R
  
• Product Series: A2D-R – Amp-Trap 2000®
  
• Fuse Class: Class RK1
  
• Fuse Type: Time-Delay
  
• Ampere Rating: 175A
  
• Rated AC Voltage: 250VAC
  
• Rated DC Voltage: 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA
  
• Connection Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Mounting Type: Clip
  
• Indication Type: SmartSpot® Visual Indicator
  
• Body Material: PolyTube
  
• Product Length: 181.1 mm
  
• Product Diameter: 39.6 mm
  
• Product Weight: 0.3411 kg
  

Material Compliance and Certifications

• The A2D175R is part of Mersen’s Low Voltage UL/CSA Fuse product family: Manufactured for use in demanding electrical systems requiring dependable overcurrent protection.
• Its PolyTube body and tin-plated copper terminals: Designed for durability, conductivity, and long service life in commercial and industrial environments.
  

Where It Works Best

• The Mersen A2D175R fuse is well suited for applications including:
• Motor control centers
• Industrial control panels
• HVAC equipment
• Feeders and branch circuits
• Manufacturing systems
• Pumps and compressors
• Commercial electrical distribution systems
• Replacement of older Class H, K, or RK5 fuses