THE INDUSTRY’S MOST POPULAR FUSE FOR MOTOR CIRCUIT PROTECTION.

Tri-onic® SmartSpot® fuses now provide a visual open fuse indicator. With advanced material technology added to the existing product the TR and TRS current limiting time delay fuses are engineered for overcurrent protection of motors and transformers, service entrance equipment, feeder and branch
circuits. Tri-onic proven time delay characteristic safely handles harmless starting currents and inrush currents associated with today’s motors and transformers.

Features/Benefits

• Solid State SmartSpot Indicator
  
• Time delay for motor start-ups and transformer inrush currents without nuisance opening
  
• Current limiting for low peak let-thru current
  
• Rejection-style design prevents replacement errors (when used with recommended fuse blocks)
  
• Easy-to-read label for quick recognition and replacement
  
• Metal-embossed date and catalog number for traceability and lasting identification
  
• Fiberglass body provides dimensional stability in harsh industrial settings
  
• High-grade silica filler ensures fast arc quenching and high current limitation
• AC & DC Rated

Applications

• Motor Circuits
  
• Mains
  
• Feeders
  
• Branch Circuits
  
• Transformers
  
• Service Entrance Equipment
  
• General-purpose Protection

Ratings

• TR
  
  • AC: 1/10 to 600A 250VAC, 200kA I.R.
  • DC: 1/10 to 2 8/10A& 35 to 400A, 250VDC, 20kA I.R.; 3 to 30A & 450 to 600A, 160VDC, 20kA I.R.
    
• TRS
  • AC: 1/10 to 600A 600VAC, 200kA I.R.
    
  • DC: 1/10 to 12A, 600VDC, 20kA I.R.; 15 to 60A, 300VDC, 20kA I.R. 70 to 600A, 600VDC, 100kA I.R.

Approvals

• UL Listed to Standard 248-12 File E2137
  
• CSA Certified to Standard C22.2 No. 248.12
  
• DC Listed to UL Standard 248 TRS only