TRS400R - 400 Amp Fuse

TRS400R - 400 Amp Fuse

The TRS400R is a 400 amp Class R fuse built for protecting high-capacity electrical systems where fault current isn’t something you take lightly. It’s designed to step in fast when there’s a short circuit, while still handling the normal surges that come with equipment starting up. Because it’s a time-delay fuse, it won’t trip every time you get a temporary inrush—like when a motor kicks on. That helps avoid unnecessary downtime. But when there’s an actual fault, it reacts quickly and limits the current before it can do real damage. This is a knife-blade style fuse, so it installs securely and stays put. No extra features, no indicators—just a straightforward, dependable fuse that does exactly what it’s supposed to do. If you’re working with feeders, transformers, or larger industrial setups, this is the kind of protection you want in place.

Key Features and Benefits

• Rated for 400 amps in demanding applications
• 200 kA interrupting rating at 600VAC for high fault capacity systems
• Time-delay operation helps avoid nuisance trips
• Current-limiting design helps reduce damage during faults
• Knife-blade connection for a solid, reliable fit
• Non-indicating – simple and dependable
• Class R rejection feature adds an extra layer of safety

Technical Specifications

• Part Number: TRS400R
  
• Amperage: 400A
  
• Voltage: 600 VAC
  
• Interrupting Rating: 200 kA
  
• Class: R
  
• Type: Time-delay, current-limiting
  
• Style: Knife-blade
  
• Indication: Non-indicating
  
• Frame Type: TRS
  
• Height: 11.63 in
  
• Width: 2.54 in
  
• Depth: 2.54 in
  
• Weight: Not listed
  

Material Compliance and Certifications

• Built to meet standard UL and CSA requirements for overcurrent protection, making it suitable for use in code-compliant electrical systems.

Where It Works Best

• Industrial panels and distribution
• Motor control centers
• Transformer protection
• Commercial power systems
• Heavy equipment circuits