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LIMITRON™ FNQ-R Class CC 600Vac, 
1⁄4-30A, time-delay fuses

Catalog symbol:
• FNQ-R-(amp)

Advanced protection Class CC current-limiting,
time-delay fuses.

• Volts
  • 600Vac
  • 300Vdc (15 & 20A)
• Amps 1⁄4-30A  
• IR  
  • 200kA Vac RMS Sym.  
  • 20kA Vdc (15 & 20A)  

Agency information
• UL® Listed, Std. 248-4, Class CC, Guide JDDZ,
  File E4273
• CSA® Certified, Class CC CSA, Class 1422-01,
  File 53787–HRC-MISC
• CE
• RoHS compliant*
* FNQ-R-1⁄4 not RoHS complaint.

• Provides 10X better current limitation to help
  prevent equipment damage caused by short-circuit
• 200kA interrupting rating complies with
  NEC®  Section 110.9 for today’s large capacity
• Fast-acting fuse helps prevent equipment
  damage caused by short-circuit events.
• Rejection type fuse fits both standard and
  rejection-style holders.
• The Class CC FNQ-R Limitron fuse meets the
  needs of control circuit transformer protection.
• FNQ-R fuses can be sized according to NEC®
  and UL requirements and still allow the high
  inrush currents, with significantly more timedelay
  than the UL minimum value of 12 seconds at 200%
  for Class CC fuses.
• Ideal for critical industrial or commercial
  applications that have specific current limitation
Catalog numbers (amps)
FNQ-R-1/4 FNQ-R-1-3/10 FNQ-R-3-2/10 FNQ-R-8
FNQ-R-3/10 FNQ-R-1-4/10 FNQ-R-3-1/2 FNQ-R-9
FNQ-R-4/10 FNQ-R-1-1/2 FNQ-R-4 FNQ-R-10
FNQ-R-1/2 FNQ-R-1-6/10 FNQ-R-4-1/2 FNQ-R-12
FNQ-R-6/10 FNQ-R-1-8/10 FNQ-R-5 FNQ-R-15
FNQ-R-3/4 FNQ-R-2 FNQ-R-5-6/10 FNQ-R-17-1/2
FNQ-R-8/10 FNQ-R-2-1/4 FNQ-R-6 FNQ-R-20
FNQ-R-1 FNQ-R-2-1/2 FNQ-R-6-1/4 FNQ-R-25
FNQ-R-1-1/8 FNQ-R-1-8/10 FNQ-R-7 FNQ-R-30
FNQ-R-1-1/4 FNQ-R-3 FNQ-R-7-1/2  

Carton quantity:

Amp rating Carton qty
1/4-30 10

Dimensions – in (mm):


• Branch circuits

• Line protection

• Small control transformers

• Industrial control

Recommended fuse blocks and holders: 

Fuse amps 1-Pole 2-Pole 3-Pole
Modular open blocks
0-30 BCM603-1_ BCM603-2_ BCM603-3_
DIN-Rail holders
0-30 - - OPM-NG_
0-30 - - OPM-1038_
0-30 - - OPM-1038_SW
Panel mount holders
0-30 HPS - -
0-30 HPF - -
In-line holders      
0-30 - HEY -
0-30 HEZ - -

For additional information on Class CC fuse blocks and holders, see
data sheets:
• Modular open blocks # 10241 (BCM)
• DIN-Rail holders No. 3185 (CHCC), No. 1109 (OPM), No. 1102
  (OPM-1038), No. 1103 (OPM-1038_SW)
• Panel mount holders No. 2113 (HPS), No. 2114 (HPF)
• In-line holders No. 2126 (HEY), No. 2130 (HEZ)