A2D50R - 50 Amp Fuse

A2D50R - 50 Amp Fuse

The Mersen A2D50R Amp-Trap 2000® Class RK1 Time-Delay Fuse is built for electrical systems that need reliable protection without unnecessary interruptions. Rated at 50 amps with 250VAC/250VDC capability, this fuse is commonly used in commercial and industrial applications where motors, feeders, and branch circuits experience temporary startup surges. Its time-delay design helps you handle normal inrush currents while still reacting quickly during serious fault conditions.

The A2D50R is part of Mersen’s trusted Amp-Trap 2000® A2D-R series, known for protecting electrical equipment from damaging short circuits and overloads. It helps reduce the risk of damage to motor starters, switches, and other important components, making it a dependable option for facilities focused on keeping your equipment running safely and efficiently.

A built-in SmartSpot® indicator gives maintenance teams a quick visual reference when the fuse has opened, helping reduce troubleshooting time. The fuse also features a durable PolyTube body and tin-plated copper ferrule terminals for dependable performance in demanding environments. Because it can replace older Class H, K, and RK5 fuses, the A2D50R is also a practical upgrade for existing electrical systems.

Key Features and Benefits

• 50A Class RK1 time-delay fuse: Designed for industrial and commercial applications.
• Reduced nuisance openings: Helps manage temporary motor startup currents.
• Fast short-circuit protection: Helps protect electrical equipment and circuits from fault damage.
• High interrupting rating: Rated at 200 kA for demanding fault-current applications.
• SmartSpot® indication: Built-in blown fuse indication supports faster troubleshooting.
• AC and DC compatibility: Suitable for AC and DC systems.
• Replacement compatibility: Can replace older Class H, K, and RK5 fuses.
• Ferrule design: Supports secure clip mounting.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2D50R
  
• Product Series: A2D-R / Amp-Trap 2000®
  
• Fuse Class: Class RK1
  
• Ampere Rating: 50A
  
• Rated AC Voltage: 250VAC
  
• Rated DC Voltage: 250VDC
  
• Frequency: 50/60 Hz
  
• Fuse Type: Time-Delay
  
• Interrupting Rating: 200 kA
  
• Indication Type: SmartSpot®
  
• Mounting Style: Clip
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Diameter: 20.6 mm
  
• Product Length: 76.2 mm
  
• AC/DC Application: AC/DC
  
• RoHS Compliant: Yes
  

Material Compliance and Certifications

• RoHS compliant: Supports environmental compliance requirements for commercial and industrial systems.
• UL/CSA applications: Manufactured for low-voltage fuse applications.
• Long-term reliability: Designed for dependable long-term circuit protection.
  

Where It Works Best

• Motor control centers
• Manufacturing equipment
• Commercial HVAC systems
• Electrical distribution panels
• Feeders and branch circuits
• Pumps and compressors
• Industrial machinery
• Retrofit projects replacing older fuse classes