KLDR Series - Class CC Time-Delay Fuses

KLDR Fuse
  • KLDR fuses are time-delay fuses specifically designed for the protection of control transformers, solenoids and similar inductive components with high magnetizing currents during the first half-cycle.
  • They closely match most control power transformer characteristics, which permits the time delay fuses to be sized in accordance with the latest revisions of UL 508 (Industrial Control) and UL 845 (Motor Control Centers).
  • When the time delay of KLDR fuses is adequate to carry motor starting current, they provide excellent protection of motor branch circuits containing IEC or NEMA rated motor controllers or contractors.
  • Compared to other UL Listed fuses, Class CC time delay fuses are the most current limiting, rating for rating.
  • Time delay fuses provide this superior protection in a fraction of the space required by other fuse classes. — For example, when 600 V three-pole, 30 A Class R fuse blocks are replaced by Littelfuse Class CC fuse blocks, panel-mounting space is reduced approximately 70%.

Applications:

Small transformer protection (control power transformers) – KLDR series, time delay fuses designed to withstand the high magnetizing inrush of transformers.

Safety:

  • 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes.
  • Extremely current limiting — Reduces damage caused by heating and magnetic effects of short-circuit currents…stops damaging short-circuit faster than any mechanical protective device.

Space Saving:

  • Class CC time delay fuses are the smallest 600V, 200,000 A.I.R. fuses approved for branch circuit protection.

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)VDC (V)Interrupting RatingOpeningSizeStockCompare
KLDR.1000.1600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.1250.125600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.1500.15600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.1870.187600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.2000.2600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.2500.25600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.3000.3600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.4000.4600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.5000.5600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.6000.6600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.7500.75600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.8000.8600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0011600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.41.4600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.51.5600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.61.6600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.81.8600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR1.121.125600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR1.251.25600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0022600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02.52.5600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02.82.8600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR2.252.25600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0033600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR03.23.2600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR03.53.5600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0044600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR04.54.5600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0055600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR05.65.6600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0066600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR6.256.25600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0077600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR07.57.5600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0088600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0099600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01010600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01212600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01515600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR17.517.5600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02020600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02525600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR03030600300200000A@600VACSlo-Blo/Time Lag (T)/Time DelayClass CCCheck

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