TR20R - 20 Amp Fuse

TR20R - 20 Amp Fuse

When your electrical equipment starts up, a brief current surge doesn't necessarily mean something is wrong. Motors and transformers routinely experience temporary current increases during startup or energization. That's why choosing the right fuse matters. The Mersen TR20R 20 Amp Class RK5 Time-Delay Fuse is designed to accommodate normal starting and inrush currents while providing overcurrent protection for compatible industrial and commercial electrical systems.

Key Features and Benefits

• 20-Amp Current Rating
• Class RK5 Fuse Classification
• Tri-Onic® TR-R Series
• Time-Delay Protection
• Current-Limiting Design
• Ferrule-Type Terminals
• Copper Terminal Construction
• PolyTube Insulating Body
• Compact Cylindrical Design
• Clip-Mounted Installation
• Motor and Transformer Applications
• Electrical Distribution Protection
• Replacement Compatibility

Technical Specifications

• Catalog Number: TR20R
  
• Manufacturer: Mersen
  
• Product Family: Tri-Onic®
  
• Series: TR-R
  
• Manufacturer Description: Fuse TR-R – Class RK5 – Time-Delay – 250VAC – 160VDC – 20A – Ferrule – Tri-Onic®
  
• Product Type: Current-Limiting Time-Delay Fuse
  
• Fuse Class: Class RK5
  
• Ampere Rating: 20 Amps (20A)
  
• Rated AC Voltage (UL): 250VAC
  
• Rated DC Voltage (UL): 160VDC
  
• AC/DC Compatibility: AC and DC, within applicable published ratings
  
• Frequency: 50/60 Hz
  
• Operating Characteristic: Time Delay
  
• AC Maximum Interrupting Rating / Breaking Capacity (I1): 200kA (200,000 Amperes)
  
• Mounting Type: Clip
  
• Connection / Terminal Type: Ferrule
  
• Connection / Terminal Material: Copper
  
• Body / Insulating Material: PolyTube
  
• Product Diameter: 14.3 mm (approximately 0.56 inches)
  
• Product Length: 50.8 mm (2.00 inches)
  
• Individual Product Weight: 0.0168 kg (approximately 0.037 lbs.)
  
• RoHS Compliant: Yes
  
• Product Group: Low Voltage UL/CSA Fuses
  
• EAN/UPC Code: 782001747848
  

Material Compliance and Certifications

• RoHS Compliance
• UL AC Voltage Rating
• UL DC Voltage Rating

Where It Works Best

• Industrial Motor Circuits Requiring 20A Protection
• Compatible Motor Starter Assemblies
• Transformer Primary Protection Applications
• Transformer Secondary Protection Applications
• Industrial Electrical Distribution Systems
• Commercial Electrical Distribution Equipment
• Service Entrance Equipment Requiring Class RK5 Fuses
• Ferrule-Type Fuse Holder Installations
• Clip-Mounted Industrial Fuse Assemblies
• Existing Mersen Tri-Onic® TR-R Applications
• Industrial Equipment Maintenance
• Electrical System Repair and Replacement
• Equipment Requiring Time-Delay Fuse Characteristics
• Form, Fit, and Functional Fuse Replacement