Return to Home
Ferraz Fast Track

HSRK Series / Class RK1 / High Speed

Protect your electrical power wiring and power semiconductors with a single fuse.

The new HIGH SPEED RK1 (HSRK) combines semiconductor fuse performance with NEC branch circuit compliance. The fuse was designed with two specific applications in mind:

  1. To provide semiconductor fuse performance to solid state drive applications but in the larger RK body sizes that have been typically installed in older systems.
  2. To provide industrial power applications with the most current limiting fuse available, which in turn provides the best arc flash mitigation available to power systems using the larger RK size fuses.
[632 KB]
Brochure
[Not Available]

Features

  • Most current limiting RK1 available
  • Provides the best Arc flash mitigation for feeder and
    branch circuits (non motor load circuits)
  • Excellent cycling ability for frequent drive starts and
    stops without nuisance opening
  • Extremely Low I2t

Highlights

  • Current-limiting
  • Low I2t
  • Drive protection in larger RK body sizes for older installations
  • Fast acting
Ratings
  • AC: AC: (70 to 600A)
    600VAC, 200KA I.R., 300KA I.R. Self certified
Approvals
  • HSRK (70 to 600A)
  • UL listed to 248-8
  • CSA certified to C22.2 -
    No. 248.8
Applications
  • Branch circuits
  • AC drives
  • Solid state controllers
  • Feeder circuits
  • Arc flash mitigation

Ferraz HSRK Series Fuse Selection

AMPERE RATING CATALOG NUMBER   AMPERE RATING CATALOG NUMBER   AMPERE RATING CATALOG NUMBER   AMPERE RATING CATALOG NUMBER
70 HSRK70R   125 HSRK125R   250 HSRK250R   500 HSRK500R
80 HSRK80R   150 HSRK150R   300 HSRK300R   600 HSRK600R
90 HSRK90R   175 HSRK175R   350 HSRK350R      
100 HSRK100R   200 HSRK200R   400 HSRK400R      
110 HSRK110R   225 HSRK225R   450 HSRK450R      
Call Us Toll-Free:(877) 268-3700
Ferraz Fuses
Ferraz Products