KLDR Series - Littelfuse KLDR Fuses Provide Superior Transformer Protection

Series: KLDR
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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

Product Literature

POWR-GARD Fuse Catalog - Download

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)Interrupting RatingOpeningVAC (V)VDC (V)SizeStockSamplesCompare
KLDR.1000.1200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.1250.125200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.1500.15200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.1870.187200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.2000.2200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.2500.25200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.3000.3200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.4000.4200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.5000.5200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.6000.6200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.7500.75200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR.8000.8200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0011200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR01.41.4200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR01.51.5200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR01.61.6200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR01.81.8200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR1.121.12200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR1.251.25200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0022200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR02.52.5200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR02.82.8200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR2.252.25200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0033200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR03.23.2200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR03.53.5200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0044200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR04.54.5200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0055200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR05.65.6200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0066200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR6.256.25200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0077200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR07.57.5200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0088200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR0099200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR01010200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR01212200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR01515200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR17.517.5200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR02020200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR02525200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
KLDR03030200 kA @ 600 VacSlo-Blo/Time Lag (T)/Time Delay600300Class CCCheckOrder
Catalog # Certificates
Sorting icon
KLDR.100 ECCiconCSAiconULicon
KLDR.125 ECCiconCSAiconULicon
KLDR.150 ECCiconCSAiconULicon
KLDR.187 ECCiconCSAiconULicon
KLDR.200 ECCiconCSAiconULicon
KLDR.250 ECCiconCSAiconULicon
KLDR.300 ECCiconCSAiconULicon
KLDR.400 ECCiconCSAiconULicon
KLDR.500 ECCiconCSAiconULicon
KLDR.600 ECCiconCSAiconULicon
KLDR.750 ECCiconCSAiconULicon
KLDR.800 ECCiconCSAiconULicon
KLDR001 ECCiconCSAiconULicon
KLDR01.4 ECCiconCSAiconULicon
KLDR01.5 ECCiconCSAiconULicon
KLDR01.6 ECCiconCSAiconULicon
KLDR01.8 ECCiconCSAiconULicon
KLDR1.12 ECCiconCSAiconULicon
KLDR1.25 ECCiconCSAiconULicon
KLDR002 ECCiconCSAiconULicon
KLDR02.5 ECCiconCSAiconULicon
KLDR02.8 ECCiconCSAiconULicon
KLDR2.25 ECCiconCSAiconULicon
KLDR003 ECCiconCSAiconULicon
KLDR03.2 ECCiconCSAiconULicon
KLDR03.5 ECCiconCSAiconULicon
KLDR004 ECCiconCSAiconULicon
KLDR04.5 ECCiconCSAiconULicon
KLDR005 ECCiconCSAiconULicon
KLDR05.6 ECCiconCSAiconULicon
KLDR006 ECCiconCSAiconULicon
KLDR6.25 ECCiconCSAiconULicon
KLDR007 ECCiconCSAiconULicon
KLDR07.5 ECCiconCSAiconULicon
KLDR008 ECCiconCSAiconULicon
KLDR009 ECCiconCSAiconULicon
KLDR010 ECCiconCSAiconULicon
KLDR012 ECCiconCSAiconULicon
KLDR015 ECCiconCSAiconULicon
KLDR17.5 ECCiconCSAiconULicon
KLDR020 ECCiconCSAiconULicon
KLDR025 ECCiconCSAiconULicon
KLDR030 ECCiconCSAiconULicon

  • 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 No
02/11/2013
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 No
02/11/2013
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
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
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
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
KLDR.800HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR001.HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR001.TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR001.TXP REACH219_Declaration_(Contain)_KLDR001.TXP No
02/11/2013		 Contains
KLDR01.4HXP RoHS No 03/15/2006 PbFree No 02/11/2013 No
02/11/2013
KLDR01.4TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR01.4TXP REACH197_Declaration_with_Pb_KLDR01.4TXP No
02/11/2013		 Contains
KLDR01.5TXP RoHS No 03/15/2006 PbFree No 02/11/2013 CoC_RoHS9_KLDR01.5TXP No
02/11/2013		 IPC_KLDR01.5TXP
KLDR01.5HXP RoHS No 03/15/2006 PbFree No