Time Delay Fuses | KLDR Series

KLDR Series - Class CC Time-Delay Fuses

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 Rating	Opening	Size	Stock

KLDR.100	0.1	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.125	0.125	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.150	0.15	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.187	0.187	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.200	0.2	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.250	0.25	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.300	0.3	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.400	0.4	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.500	0.5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.600	0.6	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.750	0.75	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR.800	0.8	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR001	1	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR01.4	1.4	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR01.5	1.5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR01.6	1.6	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR01.8	1.8	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR1.12	1.125	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR1.25	1.25	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR002	2	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR02.5	2.5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR02.8	2.8	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR2.25	2.25	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR003	3	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR03.2	3.2	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR03.5	3.5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR004	4	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR04.5	4.5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR005	5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR05.6	5.6	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR006	6	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR6.25	6.25	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR007	7	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR07.5	7.5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR008	8	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR009	9	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR010	10	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR012	12	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR015	15	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR17.5	17.5	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR020	20	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR025	25	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check
KLDR030	30	600	300	200000A@600VAC	Slo-Blo/Time Lag (T)/Time Delay	Class CC	Check

Catalog #	Certificates

KLDR.100
KLDR.125
KLDR.150
KLDR.187
KLDR.200
KLDR.250
KLDR.300
KLDR.400
KLDR.500
KLDR.600
KLDR.750
KLDR.800
KLDR001
KLDR01.4
KLDR01.5
KLDR01.6
KLDR01.8
KLDR1.12
KLDR1.25
KLDR002
KLDR02.5
KLDR02.8
KLDR2.25
KLDR003
KLDR03.2
KLDR03.5
KLDR004
KLDR04.5
KLDR005
KLDR05.6
KLDR006
KLDR6.25
KLDR007
KLDR07.5
KLDR008
KLDR009
KLDR010
KLDR012
KLDR015
KLDR17.5
KLDR020
KLDR025
KLDR030

	KLDR Series Datasheet
	KLDR Series Time Current Curves
	KLDR Series Peak Let-Thru Curves
	KLDR Series IGS 3D Model
	KLDR Series CAD Drawing
	KLDR Series Peak Let-Thru Curves 4A-30A

Showing 3 items

- L600C
  Class CC & CD Fuse Block
- Fuse Type: Class CC, Class CD
- Indicating: No
- Information Not Available
- L600C-DINR
  Class CC DIN-Releasable Fuse Block
- Fuse Type: Class CC
- Indicating: No
- Information Not Available
- LEC Series
  In-Line Watertight Single Pole Class CC Fuse Holder
- Fuse Type: Class CC
- Indicating: No
- Information Not Available


	ChinaRoHS_KLDR_25 30A pdf
	ChinaRoHS_KLDR_0 4A pdf
	ChinaRoHS_KLDR_4 5 7 5A_ pdf

Semiconductors

KLDR Series - Class CC Time-Delay Fuses

Applications:

Safety:

Space Saving:

Product Literature

Showing 3 items

Connect with Littelfuse

About Littelfuse

Explore Littelfuse Products

Technical Resources & Quality

Your Privacy

Essential

Performance and analytical technologies

Functionality

Targeting or Advertising