TRS4R - 4 Amp Fuse

TRS4R - 4 Amp Fuse

The TRS4R is a 4 amp Class R fuse made for circuits where a quick surge is normal—but failure isn’t. If you’ve got motors or equipment that spike on startup, a standard fuse can trip when nothing’s actually wrong. This one gives you a little breathing room. It’s time-delay, so it won’t open on those short inrush currents—but if something goes sideways, it clears fast. It’s also current-limiting, which just means it helps cut down the amount of fault energy that gets through. Less stress on your equipment, fewer headaches later. Nothing flashy here. Just a dependable fuse that does what it’s supposed to do.

Key Features and Benefits

• Handles startup surges without nuisance blowing
• Trips when it should—not before, not after
• 200 kA interrupting rating at 600VAC
• Helps limit damage during a fault
• Standard Class R cartridge fuse
• Straightforward replacement—no guesswork

Technical Specifications

• Part Number: TRS4R
  
• Amps: 4A
  
• Voltage: 600VAC
  
• Interrupting Rating: 200 kA
  
• Class: R
  
• Type: Time-Delay, Current-Limiting
  
• Style: Cartridge (Non-Indicating)
  
• Frame: TRS
  
• Size: 5.0" x 0.81" x 0.81"
  
• Poles: N/A
  

Material Compliance and Certifications

• Meets standard Class R fuse requirements and works with rejection-style holders, so you’re installing the right fuse in the right place—no mix-ups.

Where It Works Best

• You’ll usually see this in:
• Motor circuits
• Control panels
• Transformers
• HVAC units
• General equipment that doesn’t start “soft”