KLDR Series - Littelfuse KLDR Fuses Provide Superior Transformer Protection

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

KLDR Series time-delay fuses are designed to protect control transformers, solenoids, and similar inductive components with high-magnetizing currents during the first half-cycle. These small-sized fuses provide excellent protection of motor branch circuits containing IEC or NEMA-rated motor controllers or contactors. The KLDR Series fuses closely match most control power transformer characteristics, which permits them to be sized in accordance with the latest revisions of UL 508 (Industrial Control) and UL 845 (Motor Control Centers).

Features and Benefits
  • Current-limiting
  • Short-circuit protection
  • Rejection capability
  • Time-delay

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)VDC (V)Interrupting RatingOpeningSizeStockCompare
KLDR.1000.1600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.1250.125600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.1500.15600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.1870.187600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.2000.2600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.2500.25600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.3000.3600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.4000.4600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.5000.5600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.6000.6600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.7500.75600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR.8000.8600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0011600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.41.4600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.51.5600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.61.6600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01.81.8600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR1.121.12600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR1.251.25600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0022600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02.52.5600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02.82.8600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR2.252.25600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0033600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR03.23.2600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR03.53.5600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0044600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR04.54.5600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0055600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR05.65.6600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0066600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR6.256.25600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0077600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR07.57.5600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0088600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR0099600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01010600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01212600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR01515600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR17.517.5600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02020600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR02525600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck
KLDR03030600300200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time DelayClass CCCheck

  • Showing 3 items
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
KLDR.100HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.100TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.100TXP REACH209_Declaration_Contain-_KLDR.100TXP No
02/11/2013
Contains
KLDR.125HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.125TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.125TXP REACH191_Declaration_with_Pb_KLDR.125TXP No
02/11/2013
Contains
KLDR.150HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.150TXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.187TXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.187HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.200TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.200TXP REACH209_Declaration_Contain-_KLDR.200TXP No
02/11/2013
Contains
KLDR.200HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.250TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.250TXP REACH211_Declaration_Contain-_KLDR.250TXP No
02/11/2013
Contains
KLDR.250HXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.250HXP REACH201_Declaration_with_Pb_KLDR.250HXP No
02/11/2013
Contains
KLDR.300TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.300TXP REACH209_Declaration_Contain-_KLDR.300TXP No
02/11/2013
Contains
KLDR.300HXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.300HXP REACH191_Declaration_with_Pb_KLDR.300HXP No
02/11/2013
Contains
KLDR.400TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.400TXP REACH209_Declaration_Contain-_KLDR.400TXP No
02/11/2013
Contains IPC_KLDR.400TXP
KLDR.400HXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.400HXP REACH209_Declaration_Contain-_KLDR.400HXP No
02/11/2013
Contains
KLDR.500HXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.500HXP REACH205_Declaration_with_Pb_KLDR.500HXP No
02/11/2013
Contains
KLDR.500TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.500TXP REACH219_Declaration_(Contain)_KLDR.500TXP No
02/11/2013
Contains IPC_KLDR.500TXP
KLDR.600TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.600TXP REACH205_Declaration_Contain-_KLDR.600TXP No
02/11/2013
Contains IPC_KLDR.600TXP
KLDR.600HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.750TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.750TXP REACH201_Declaration_with_Pb_KLDR.750TXP No
02/11/2013
Contains
KLDR.750HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR.800TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR.800TXP REACH211_Declaration_(Contain)_KLDR.800TXP No
02/11/2013
Contains