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spacer General Purpose Fuses
UL Power Fuses
Class RK5 - Time Delay - 250 Volt TR-R
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THE INDUSTRY’S MOST POPULAR FUSE FOR MOTOR CIRCUIT PROTECTION. Tri-Onic® SmartSpot® TR fuses now provide an optional visual open fuse indicator. With advanced material technology added to the existing product line the TR current-limiting time-delay fuses are engineered for overcurrent protection of motors and transformers, service entrance equipment, feeder and branch circuits. Tri-Onic fuse’s proven time-delay characteristic safely handles harmless starting currents and inrush currents associated with today’s motors and transformers.


Features

  • Optional 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 block)

Applications

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


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Ratings
AC:
  • 1/10 to 600A, 250VAC, 200kA I.R.
DC:
  • 1/10 to 2-8/10A, 250VDC, 20kA I.R.
  • 3 to 30A, 160VDC, 20kA I.R.
  • 35 to 400A, 250VDC, 20kA I.R.
  • 450 to 600A, 160VDC, 20kA I.R. 

APPROVALS
  • UL Listed to Standard 248-12
  • DC Tested to UL Standard 248 (Mersen Certified)
  • CSA Certified to Standard C22.2 No. 248.12
  • RoHS Compliant

PRODUCT INFO

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Mersen is a global expert in materials and solutions for extreme environments as well as in the safety and reliability of electrical equipment.