TRS20R - 20 Amp Fuse

TRS20R - 20 Amp Fuse

The TRS20R is a 20 amp Class R fuse made for circuits that see a surge when equipment starts up. If you’re dealing with motors or transformers, that matters. A standard fuse might open too quickly—this one won’t. It’s time-delay, so it gives the circuit a moment to get past that initial spike. If there’s an actual fault, though, it clears it fast. It’s rated 200 kA at 600VAC, so it’s meant for systems where fault current isn’t small. The current-limiting design helps cut down how much energy gets through, which can help protect other components in the line. Nothing complicated about the design. It’s a cartridge fuse, fits standard Class R holders, and there’s no indicator. When it’s done, you replace it.

Key Features and Benefits

• Time-delay: holds through normal startup current
• Helps limit damage during faults
• 200 kA interrupting rating at 600VAC
• Standard Class R cartridge size
• Non-indicating
• Rejection feature to prevent wrong fit

Technical Specifications

• Part Number: TRS20R
  
• Amperage: 20A
  
• Voltage: 600VAC
  
• Interrupting Rating: 200 kA
  
• Class: R
  
• Type: Time-Delay, Current-Limiting
  
• Design: Cartridge, Non-Indicating
  
• Size: 5.0" × 0.81" × 0.81"
  

Material Compliance and Certifications

Meets common standards like UL and CSA for this type of fuse.

Where It Works Best

Used in motor circuits, transformers, and control panels—basically anywhere startup current is higher than normal running load.